Dan Snow

Dan Snow

  • Contact Information
  • My Story
  • Publications
  • Background
  • Interests
  • Grants
  • Advising
  • Courses Taught

Contact Information

TitleDirector of Laboratory Services
Faculty RankResearch Professor
Address202 Water Sciences Laboratory
1840 North 37th Street
Lincoln NE
  • office: 402-472-7539
  • fax: 402-472-9599
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My Story

Hi, my name is Dan Snow, and I'm a research professor in the School of Natural Resources, and the director of laboratory services of the UNL Water Sciences Laboratory. I have been at UNL since 1990. I use analytical chemistry to help understand how water becomes contaminated and what we can do to prevent it. A good part of my work in the Water Sciences Laboratory involves creating analytical methods for new or "emerging" environmental contaminants like steroids, pharmaceuticals, algal toxins, explosives and pesticides. I also help develop methods to measure and use stable isotopes as tracers to study environmental problems and processes.

Dan Snow and undergraduate student Megan Larsen discuss methods for analysis of algal toxins in lake water.
Dan Snow and undergraduate student Megan Larsen discuss methods for analysis of algal toxins in lake water.

Mass spectrometry is an incredibly powerful tool to use in studying the occurrence and environmental fate of chemicals, and their potential for affecting organisms and people. Students and staff I supervise use mass spectrometers to help other scientists and engineers find out exactly what chemicals are in water and other materials. I work with biologists - studying endocrine disruption in fish in Nebraska rivers - to find out what kinds and concentrations of steroid hormones and pesticides may be associated with these effects. I also work with scientists and engineers to find out what kinds and concentrations of steroid hormones and pharmaceuticals may be found in livestock and municipal waste, and whether or not these chemicals can get into water.

Selected Publications

Beegum, S., Malakar, A., Ray, C., and Snow, D. D., (2023). Importance of snowmelt on soil nitrate leaching to groundwater–A model study. Journal of Contaminant Hydrology, 255, 104163.
Satybaldiyev, B., Ismailov, B., Nurpeisov, N., Kenges, K., Snow, D., Malakar, A., and Uralbekov, B., (2023) Evaluation of dissolved and acid-leachable trace element concentrations in relation to practical water quality standards in the Syr Darya, Aral Sea Basin, South Kazakhstan. Chemosphere, 313, 137465.
Allen, D. S., Kolok, A. S., Snow, D. D., Satybaldiyev, B., Uralbekov, B., Nystrom, G. S., Thorton-Hampton, L. M., Bartelt-Hunt, S. L., Sellin-Jeffries, M. K. (2022). Predicted aquatic and human health risks associated with the presence of metals in the Syr Darya and Shardara Reservoir, Kazakhstan. Science of The Total Environment, 859(Part 1), 159827. https://www.sciencedirect.com/science/article/pii/S0048969722069273?via%3Dihub
Caniglia, J., Snow, D., Messer, T., Bartelt-Hunt, S. L. (2022). Extraction, analysis, and occurrence of per- and polyfluoroalkyl substances (PFAS) in wastewater and after municipal biosolids land application to determine agricultural loading. Frontiers in Water, 4, 892451.Online
Caniglia, J., Snow, D., Messer, T., Bartelt-hunt, S., & Thomas, S. A. (2022). Occurrence of Per- and Polyfluoroalkyl Substances (PFAS) in wastewater treatment , wastewater biosolids and after biosolids land application to determine agroecosystem loading. Frontiers in Environmental Water Quality.
Chakraborty, P., Snow, D. (2022). Legacy and Emerging Contaminants in Water and Wastewater. Cham: Springer Nature.Online
Chokejaroenrat, C., Sakulthaew, C., Satchasataporn, K., Snow, D., Ali, T. E., Assiri, M. A., Watcharenwong, A., Imman, S., Suriyachai, N., Kreetachat, T. (2022). Enrofloxacin and Sulfamethoxazole Sorption on Carbonized Leonardite: Kinetics, Isotherms, Influential Effects, and Antibacterial Activity toward S. aureus ATCC 25923. Antibiotics, 11(9), 1261. http://dx.doi.org/10.3390/antibiotics11091261Online
Donner, L., Staley, Z., Petali, J., Sangster, J., Li, X., Mathews, W., Snow, D., Howe, A., Soupir, M., Bartelt-Hunt, S. L. (2022). The Human Health Implications of Antibiotic Resistance in Environmental Isolates from Two Nebraska Watersheds. Microbiology Spectrum, 10(2), e02082-21. https://journals.asm.org/doi/abs/10.1128/spectrum.02082-21Online
Iftekhar, S., Poddar, S., Rauhauser, M., Snow, D., Hage, D. (2022). Preparation of entrapment-based microcolumns for analysis of drug-humic acid interactions by high-performance affinity chromatography. Analytica Chimica Acta, 1239, 340629. http://dx.doi.org/10.1016/j.aca.2022.340629
Lawal, A., Tijani, M. N., Snow, D., D'Alessio, M. (2022). Quality and hydrochemical assessment of groundwater in geological transition zones: a case study from N.E. Nigeria. Environmental Science and Pollution Research, 65.
Lindgren, J. K., Messer, T., Miller, D., Snow, D., Franti, T. (2022). Neonicotinoid pesticide and nitrate mixture removal and persistence in floating treatment wetlands. Journal of Environmental Quality, 51, 1246-1258.Online
Malakar, A., Snow, D. D., Kaiser, M., Shields, J., Maharjan, B., Walia, H., Rudnick, D., and Ray, C., (2022) Ferrihydrite enrichment in the rhizosphere of unsaturated soil improves nutrient retention while limiting arsenic and uranium plant uptake Science of the Total Environment, 806(4), pp.150967.Online
Meyer, M.F., Ozersky, T., Woo, K.H., Schapov, K., Galloway, A.W.E., Schram, J.B., Rosi, E.J., Snow, D.D., Timofeyev, M.A., Karnaukhov, D.Y., Brousil, M.R., Hampton, S.E. 2022. Effects of spatially heterogeneous lakeside development on nearshore biotic communities in a large, deep, oligotrophic lake. Limnol. Oceanogr. 9999, 2022, 1–16. doi: 10.1002/lno.12228Online
Mohapatra, S., Snow, D., Shea, P., Gálvez-Rodríguez, A., Kumar, M., Mukherji, L. P., Mukherji, S. (2022). Photodegradation of a mixture of five pharmaceuticals commonly found in wastewater: Experimental and computational analysis. Environmental Research, 216(Part 3), 114659. https://www.sciencedirect.com/science/article/pii/S0013935122019867?via%3Dihub
Panda, B., Chidambaram, S., Snow, D. D., Malakar, A., Alagappan, R., Singh, D. K., and Elumalai, V., (2022). Source apportionment and health risk assessment of nitrate in foothill aquifers of Western Ghats, South India. Ecotoxicology and Environmental Safety, 229(1), pp. 113075.Online
Ray, C., Malakar, A., and Snow, D. D., (2022). Response to Groundwater Storage Recovery Raises the Risk of Nitrate Pollution by Min et al. (Vol 56, #1 pages 8-9). Environmental Science & Technology, 56(5), pp. 2841-2842.
Ray, C., Malakar, A., Snow, D. (2022). Letter to Editor: Response to “Groundwater Storage Recovery Raises the Risk of Nitrate Pollution”. Environmental Science & Technology, 56(5), 2841-2842. https://doi.org/10.1021/acs.est.2c00497
Severson, M. A., Cassada, D. A., Huber, V. C., Snow, D., McFadden, L. M. (2022). Population Health Metrics During the Early Stages of the COVID-19 Pandemic: Correlative Pilot Study. JMIR Formative Research, 6(10), e40215. http://dx.doi.org/10.2196/40215Online
Vakil, S. G., Biswas, S., Snow, D., Wu-Smart, J. Y. (2022). Targeted Method for Quantifying Air-Borne Pesticide Residues from Conventional Seed Coat Treatments to Better Assess Exposure Risk During Maize Planting. Bulletin of Environmental Contamination and Toxicology volume, 109, 1051-1058.
Westrop, J., Snow, D., Weber, K. A. (2022). Mobilization of Naturally Occurring Uranium in Groundwater Under Intensely Managed Farmland. Food, Energy, and Water Nexus: A Consideration for the 21st Century (pp. 215--231). Cham: Springer International Publishing. https://doi.org/10.1007/978-3-030-85728-8_12Online
Al-Mashaqbeh, O. A., Alsafadi, D. A., Alsalhi, L. Z., Bartelt-Hunt, S. L., Snow, D. (2021). Removal of Carbamazepine onto Modified Zeolitic Tuff in Different Water Matrices: Batch and Continuous Flow Experiments. WATER, 13(8).Online
Chakraborty, P., Shappell, N. W., Mukhopadhyay, M., Onanong, S., Rex, K. R., Snow, D. (2021). Surveillance of plasticizers, bisphenol A, steroids and caffeine in surface water of River Ganga and Sundarban wetland along the Bay of Bengal: occurrence, sources, estrogenicity screening and ecotoxicological risk assessment. WATER RESEARCH, 190.Online
Hall, M. C., Duerschner, J., Gilley, J. E., Schmidt, A., Bartelt-Hunt, S. L., Snow, D., Eskridge, K., Li, X. (2021). Antibiotic resistance genes in swine manure slurry as affected by pit additives and facility disinfectants. SCIENCE OF THE TOTAL ENVIRONMENT, 761. Online
He, T., Bao, J., Leng, Y., Snow, D., Kong, S., Wang, T., Li, X. (2021). Biotransformation of doxycycline by Brevundimonas naejangsanensis and Sphingobacterium mizutaii strains. JOURNAL OF HAZARDOUS MATERIALS, 411Online
Malakar, A., Kanel, S. R., Ray, C., Snow, D., Nadagouda, M. N. (2021). Nanomaterials in the environment, human exposure pathway, and health effects: A review (vol. 759).
Malakar, A., Singh, R., Westrop, J., Weber, K. A., Elofson, C. N., Kumar, M., Snow, D. (2021). Occurrence of arsenite in surface and groundwater associated with a perennial stream located in Western Nebraska, USA. JOURNAL OF HAZARDOUS MATERIALS, 416.Online
Meyer, M. F., Ozersky, T., Woo, K. H., Shchapov, K., Galloway, Aaron W. E., Schram, J. B., Snow, D., Timofeyev, M. A., Karnaukhov, D. Y., Brousil, M. R., Hampton, S. E. (2021). A unified dataset of colocated sewage pollution, periphyton, and benthic macroinvertebrate community and food web structure from Lake Baikal (Siberia). LIMNOLOGY AND OCEANOGRAPHY LETTERS. Online
Richards, G., Gilmore, T., Mittelstet, A.R., Messer, T.L., Snow, D.D. (2021). Baseflow nitrate dynamics within nested watersheds of an agricultural stream in Nebraska, USA. Agriculture, Ecosystems and Environment 308 (2021) 107223. doi:10.1016/j.agee.2020.107223Online
Satiroff, J. A., Messer, T., Mittelstet, A., Snow, D. (2021). Pesticide occurrence and persistence entering recreational lakes in watersheds of varying land uses. ENVIRONMENTAL POLLUTION, 273.Online
Singh, A., Kukal, M., Shapiro, C., Snow, D., Irmak, S., Iqbal, J. (2021). Growth phase-specific evaporative demand and nighttime temperatures determine Maize (Zea Mays L.) yield deviations as revealed from a long-term field experiment. AGRICULTURAL AND FOREST METEOROLOGY, 308
Staley, Z., Woodbury, B. L., Stromer, B. S., Schmidt, A., Snow, D., Bartelt-Hunt, S. L., Wang, B., Li, X. (2021). Stockpiling versus Composting: Effectiveness in Reducing Antibiotic-Resistant Bacteria and Resistance Genes in Beef Cattle Manure. APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 87(16).Online
Sun, Y., Snow, D., Walia, H., Li, X. (2021). Transmission Routes of the Microbiome and Resistome from Manure to Soil and Lettuce. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 55(16), 11102-11112.Online
Borsuah, J.F., Messer, T.L., Snow, D.D., Comfort, S.D., Mittelstet, A.R. 2020. Literature Review: Global Neonicotinoid Insecticide Occurrence in Aquatic Environments. Water. 12, 3388.Online
Malakar, A., Kaiser, M., Snow, D. D., Walia, H., Panda, B., and Ray, C. (2020) Ferrihydrite reduction increases arsenic and uranium bioavailability in unsaturated soil. Environmental Science and Technology, 54(21), pp.13839-13848.
Ali, J., Montecinos, A., Schulze, T. T., Allmon, L. G., Kallenbach, A. T., Watson, G. F., Davis, P. H., Snow, D., Bertin, A., Gouin, N., Kolok, A. 2019. Assessment of Gene Expression Biomarkers in the Chilean Pencil Catfish, Trichomycterus areolatus, fromOnline
Al-Mashaqbeh, O., Alsafadi, D., Dalahmeh, S., Bartelt-Hunt, S. L., Snow, D. 2019. Removal of Selected Pharmaceuticals and Personal Care Products in Wastewater Treatment Plant in Jordan. Water. 11(10), 13.Online
Ayuba, R., Moshood, N. T., Snow, D. 2019. Hydrochemistry and stable isotopes (18O and 2H) characteristics of groundwater in Lokoja and its environs, central Nigeria. Environmental Earth Sciences. 78(582): 1-15.Online
Barrios, R. E., Gaonkar, O., Snow, D., Li, Y., Li, X., Bartelt-Hunt, S. L. 2019. Enhanced biodegradation of atrazine at high infiltration rates in agricultural soils. Environmental Science: Processes & Impacts. 21(6): 999-1010.Online
Camargo, C., Snow, D., Onanong, S., Hunt, T., Siegfried, B. 2019. Residues of thiamethoxam and mefenoxam in vegetative and floral tissue of soybean at the early reproductive stage resulting from seed treatments. Crop Protection. 119:134-140.Online
Gouin, N., Bertin, A., Espinosa, M. I., Snow, D., Ali, J., Kolok, A. 2019. Pesticide contamination drives adaptive genetic variation in the endemic mayfly Andesiops torrens within a semi-arid agricultural watershed of Chile. Environmental Pollution. 255(2Online
Kumar, M., Snow, D., Honda, R. 2019. Emerging Issues in the Water Environment during the Anthropocene, A South East Asian Perspective. pp. 365. Springer. Singapore: Springer Nature. pp. 106.
Kumar, M., Snow, D., Li, Y., Shea, P. 2019. Perchlorate behavior in the context of black carbon and metal cogeneration following fireworks emission at Oak Lake, Lincoln, Nebraska, USA. Environmental Pollution. 253: 930-938.Online
Levine, R. E., Zhang, Y., Leng, Y., Snow, D., Cassada, D., Durso, L., Li, X. 2019. Microbial Transformation of A Sulfonamide Antibiotic Under Various Background Nutrient Conditions. Bulletin of Environmental Contamination and Toxicology. 103(6): 808-813.Online
Malakar, A., Snow, D., Ray, C. 2019. Irrigation Water Quality–A Contemporary Perspective. Water. 11(7), 1482.Online
Snow, D., Cassada, D. A., Biswas, S., Malakar, A., D'Alessio, M., Carter, L. J., Johnson, R. D., Sallach, J. B. 2019. Detection, Occurrence and Fate of Emerging Contaminants in Agricultural Environments. Water Environ Research. 91(10):1103-1113.Online
Snow, D., Ibragimova, N., A., S. 2019. On the Question of the Necessity of Normalizing Bio-Transformed Substances Medicinal Preparations in Objects of the Environment. Reports of the National Academy of Sciences of the Republic of Kazakhstan. 1(323): 5-10Online
Akbariyeh, S., Bartelt-Hunt, S. L., Snow, D., Li, X., Tang, Z., Li, Y. (2018). Three-dimensional modeling of nitrate-N transport in vadose zone: Roles of soil heterogeneity and groundwater flux. Journal of Contaminant Hydrology, 211, 15-25.
Baral, D., Fisher, J. R., Florek, M. J., Dvorak, B., Snow, D., Admiraal, D. M. (2018). Atmospheric Contributions of Nitrate to Stormwater Runoff from Two Urban Watersheds. Journal of Environmental Engineering, 144(2).Online
Chakraborty, P., Mukhopadhyay, M., Sampath, S., Ramaswamy, B., Katsoyiannis, A., Cincinelli, A., Snow, D. (2018). Organic micropollutants in the riverine sediments along the lower stretch of the River Ganga: occurrences, sources and risk assessment. Envir
D'Alessio, M., Durso, L. M., Miller, D. N., Woodbury, B., Snow, D., Ray, C. (2018). Environmental fate and microbial effects of monensin, lincomycin, and sulfamethazine residues in soil. Environmental Pollution, 631-632, 60-68.
D'Alessio, M., Onanong, S., Snow, D., Ray, C. (2018). Occurrence and removal of three classes of pharmaceutical compounds at four wastewater treatment plants in Hawaii and their environmental fate. Science of The Total Environment, 631-632, 1360-1370.
Juntakut, P., Snow, D., Haacker, E., Ray, C. (2018). The long term effect of agricultural, vadose zone and climatic factors on nitrate contamination in the Nebraska's groundwater system. Journal of Contaminant Hydrology, 16.
Khuman, S. N., Chakraborty, P., Cincinelli, A., Snow, D., Kumar, B. (2018). Polycyclic aromatic hydrocarbons in surface waters and riverine sediments of the Hooghly and Brahmaputra Rivers in the Eastern and Northeastern India. Science of the Total Environ
Rosi-Marshall, E. J., Bechtold, H., Snow, D., Rojas, M., Reisinger, A. J., Kelly, J. J. (2018). Urban stream microbial communities show resistance to pharmaceutical exposure. Ecosphere, 9(1).
Sallach, J. B., Snow, D., Li, X., Hodges, L., Bartelt-Hunt, S. L. (2018). Influence of soil texture on the uptake of antibiotics and their toxicity to lettuce. Environmental Engineering Science, 35(8).
Satkowski, L., Goyne, K., Anderson, S., Lerch, R., Webb, E., Snow, D. (2018). Imidacloprid Sorption and Transport in Cropland, Grass Buffer, and Riparian Buffer Soils. Vadose Zone Journal, 17(1), 1-12.
Snow, D., Chakraborty, P., Moitraiyee, M., Shruthi, R., Mazumdar, D., Snow, D., Wang, J. J. (2018). Biochar for Effective Cleaning of Contaminated Dumpsite Soil: A Sustainable and Cost-Effective Remediation Technique for Developing Nations. Environmental
Wells, M. J., Gilmore, T., Mittelstet, A., Snow, D., Sibray, S. (2018). Assessing Decadal Trends of a Nitrate-Contaminated Shallow Aquifer in Western Nebraska Using Groundwater Isotopes, Age-Dating, and Monitoring. WATER, 10(8).
Zhang, Y., Jewett, C., Gilley, J. E., Bartelt-Hunt, S. L., Snow, D., Hodges, L., Li, X. (2018). Microbial communities in the rhizosphere and the root of lettuce as affected by Salmonella-contaminated irrigation water. FEMS Microbiology Ecology, 94(9), fiy135-fiy135.
Ali, J. M., D'Souza, D., Schwarz, K., Allmon, L., Singh, R. P., Snow, D., Bartelt-Hunt, S. L., Kolok, A. (2017). Response and recovery of fathead minnows (Pimephales promelas) following early life exposure to water and sediment found within agricultural rOnline
Ali, J. M., Palandri, M. T., Kallenbach, A. T., Chavez, E., Ramirez, J., Onanong, S., Snow, D., Kolok., A. S. (2017). Estrogenic effects following larval exposure to the putative anti-estrogen, fulvestrant, in the fathead minnow (Pimephales promelas). ComOnline
Ali, J. M., Sangster, J. L., Snow, D., Bartelt-Hunt, S. L., Kolok, A. S. (2017). Compensatory response of fathead minnow larvae following a pulsed in-situ exposure to a seasonal agricultural runoff event. Science of the Total Environment, 603, 817-826.Online
Dungan, R. S., Snow, D., Bjorneberg, D. L. (2017). Occurrence of Antibiotics in an Agricultural Watershed in South-Central Idaho. Journal of Environmental Quality. http://doi.org/10.2134/jeq2017.06.0229Online
Gilley, J. E., Bartelt-Hunt, S. L., Eskridge, K., Li, X., Schmidt, A., Snow, D. (2017). Setback distance requirements for removal of swine slurry constituents in runoff. Transactions of the ASABE, 60, 1799-1806.Online
Papastavros, E., Remmers, R. A., Snow, D., Cassada, D. A., Hage, D. S. (2017). Affinity Extraction of Emerging Contaminants from Water Based on Bovine Serum Albumin as a Binding Agent. Journal of Separation Science, 26-35.Online
Schuster, N. R., Bartelt-Hunt, S. L., Durso, L., Gilley, J. E., Li, X., Marx, D., Schmidt, A., Snow, D. (2017). Runoff Water Quality Characteristics Following Swine Slurry Application under Broadcast and Injected Conditions. Transactions of the ASABE, 60(Online
Snow, D., Cassada, D. A., Larsen, M. L., Mware, N. A., Li, X., D'Alessio, M., Zhang, Y., Sallach, J. B. (2017). Detection, Occurrence and Fate of Emerging Contaminants in Agricultural Environments. Water Environment Research, 89, 897-920.Online
Tietjen, C. L., Hunt, T., Snow, D., Cassada, D. A., Siegfried, B. (2017). Method Development for Monitoring Bean Leaf Beetle, Cerotoma trifurcata (Forster) (Coleoptera: Chrysomelidae), Susceptibility to Thiamethoxam Seed Treatments on Soybeans. Journal ofOnline
Aga, D. S., Lenczewski, M., Snow, D., Muurinen, J., Sallach, J. B., Wallace, J. S. 2016. Challenges in the Measurement of Antibiotics and in Evaluating their Impacts in the Agroecosystems – A Critical Review. Journal of Environmental Quality, 45: 407-419.
Bartelt-Hunt, S. L., Kolok, A., Snow, D., Ali, J., Sangster, J. 2016. Bioavailability and fate of sediment-associated progesterone in aquatic systems. Environmental Science and Technology, 50(7):4027–4036.Online
Biswas, S., Kranz, W., Shapiro, C., Snow, D., Bartelt-Hunt, S. L., Mamo, M., Tarkalson, D. D., Zhang, T. C., Shelton, D., Van Donk, S., Mader, T. 2016. Effect of rainfall timing and tillage on the transport of steroid hormones in runoff from manure amendeOnline
Durso, L., Miller, D., Snow, D., Henry, C. G., Santin, M., Woodbury, B. L. 2016. Evaluation of Fecal Indicators and Pathogens in a Beef Cattle Feedlot Vegetative Treatment System. Journal of Environmental Quality. 46: 169-176.
Franklin, A. M., Aga, D. S., Cytryn, E., Durso, L., McLain, J. E., Pruden, A., Roberts, M. C., Rothrock, M. J., Snow, D., Watson, J. E., Dungan., R. S. 2016. Antibiotics in Agroecosystems:An Introduction. Journal of Environmental Quality (Special Issue).
Gogoi, A., Chaminda, M., An, A. K. J., Li, Y., Snow, D., Kumar, M. 2016. Influence of Ligands on Metal Speciation, Transport and Toxicity in a Tropical River during Wet (Monsoon) Period. Chemosphere. 163:322-333.Online
Lee, S. S., Paspalof, A. M., Snow, D., Richmond, E. K., Rosi-Marshall, E. J., Kelly, J. J. 2016. Occurrence and potential biological effects of amphetamine in stream ecosystems. Environmental Science and Technology. 50(17):9727-9735.Online
Leng, Y., Bao, J., Chang, G., Zheng, H., Du, J. J., Snow, D., Li, X. 2016. Biotransformation of Tetracycline by Stenotrophomonas maltophilia Strain DT1. Journal of Hazardous Materials. 318:125-133.Online
Snow, D., Cassada, D. A., Bartelt-Hunt, S. L., Li, X., D’Allessio, M., Zhang, Y., Sallach., J. B. 2016. Detection, Occurrence and Fate of Emerging Contaminants in Agricultural Environments. Water Environment Research. 88:913-929.Online
Williams-Nguyen, J., Sallach, J. B., Bartelt-Hunt, S. L., Boxall, A., Durso, L., McLain, J. E., Singer, R. S., Snow, D., Ziles, J. L. 2016. Antibiotics and antibiotic resistance in agroecosystems: State of the science. Journal of Environmental Quality (Sp
Zhang, Y., Snow, D., Bartelt-Hunt, S. L. 2016. Stereoselective Degradation of Estradiol and Trenbolone Isomers in Alluvial Sediment. Environmental Science and Technology. 50(24):13256-13264.Online
Brown, D.; Snow, D.; Hunt, G.; Bartelt-Hunt, S.L. 2015. Persistence of pharmaceuticals in effluent-dominated surface waters. Journal of Environmental Quality, 44(1):299-304.
Jaimes-Correa, J.C., D.D. Snow and S.L. Bartelt-Hunt. 2015. Seasonal occurrence of antibiotics and a beta agonist in an agriculturally-intensive watershed. Environ Pollut 205: 87-96.Online
Ma, R., Zhang, T. C., Bartelt-Hunt, S. L., Qi, Y., Kranz, W., Snow, D., Mader, T., Shapiro, C., Shelton, D., van Donk, S., Tarkalson, D., Ensley, S. (2015). Influence of Soil Properties and Test Conditions on Sorption and Desorption of Testosterone. JournOnline
Sallach, J. B., Snow, D., Hodges, L., Li, X. (2015). Development and Comparison of Four Methods for the Extraction of Antibiotics from Vegetative Plant Matrices. Environmental Toxicology and Chemistry. 35: 889-897.Online
Sallach, J.B.; Zhang, Y.; Hodges, L.; Snow, D.D.; Li, X.; Bartelt-Hunt, S.L. 2015. Concomitant Uptake of Antimicrobials and Salmonella in Soil and into Lettuce Following Wastewater Irrigation. Environmental Pollution. 197, 269-277.Online
Snow, D., Cassada, D. A., Bartelt-Hunt, S. L., Li, X., D'Alessio, M., Levine, R., Zhang, Y., Sallach, J. B. (2015). Detection, Occurrence and Fate of Emerging Contaminants in Agricultural Environments. Water Environment Federation ResearchOnline
Soni, B., S.L. Bartelt-Hunt, D.D. Snow, J.E. Gilley, B.L. Woodbury, D.B. Marx, et al. 2015. Narrow Grass Hedges Reduce Tylosin and Associated Antimicrobial Resistance Genes in Agricultural Runoff. Journal of Environmental Quality 44: 895-902.
Zhang, Y., R.G. Krysl, J.M. Ali, D.D. Snow, S.L. Bartelt-Hunt and A.S. Kolok. 2015. Impact of Sediment on Agrichemical Fate and Bioavailability to Adult Female Fathead Minnows: A Field Study. Environmental Science & Technology.Online
Zhang, Y., Sallach, J. B., Hodges, L., Snow, D., Bartelt-Hunt, S. L., Eskridge, K., Li, X. (2015). Effects of soil texture and drought stress on the uptake of antibiotics and the internalization of Salmonella in lettuce following wastewater irrigation. EnOnline
Al-Sammak, M., K. Hoagland, D. Snow. 2014. Co-occurrence of the cyanotoxins BMAA, DABA and anatoxin-a in water, fish, and aquatic plants in Nebraska reservoirs. Toxins 6:488-508.Online
Joy, S. R., Li, X., Snow, D., Gilley, J. E., Woodbury, B., Al-Badeery, A. (2014). Fate of Antimicrobials and Antimicrobial Resistance Genes in Simulated Swine Manure Storage. Science of the Total Environment, 481, 69-74.Online
Kolok, A., Sellin, M., Knight, L., Snow, D., Bartelt-Hunt, S. L. (2014). The Hourglass: A conceptual framework for the transport of biologically active compounds from agricultural landscapes. Journal of the American Water Resources Association, 50(2), 266Online
Pan, D., Watson, R., Wang, D., Tan, Z. H., Snow, D., Weber, K. A. (2014). Correlation between viral production and carbon mineralization under nitrate reducing conditions i aquifer sediment. ISME Journal, 8: 1691-1703.Online
Rosi-Marshall, E. J., Snow, D., Bartelt-Hunt, S. L., Paspalof, A., Tank, J. (2014). A review of ecological effects and environmental fate of illicit drugs in aquatic ecosystems. Journal of Hazardous Materials, 282, 18-25.Online
Sangster, J., Zhang, Y., Hernandez, R., Garcia, Y., Sivils, J. C., Cox, M. B., Snow, D., Kolok, A. S., Bartelt-Hunt, S. L. (2014). Bioavailability and fate of sediment-associated trenbolone and estradiol in aquatic systems. Science of the Total Environmen
Uralbekov, B., Burkitbayev, M., Satybaldiyev, B., Matveyeva, I., Tuzova, T., Snow, D. (2014). Spatial and seasonal variability of 234U/238U activity ratios in the Shu River, Kazakhstan. Environmental Earth Sciences, 72, 3635-3642.
Zhang, Y., Nandakumar, R., Bartelt-Hunt, S. L., Snow, D., Hodges, L., Li, X. (2014). Quantative proteomic analysis of the Salmonella-lettuce interaction. Microbial Biotechnology, 6(7), 630-637.Online
Al-Sammak, M. A., Snow, D., Hoagland, K., and Cassada, D. 2013. Methods for Detection of Neurodegenerative Cyanotoxins BMAA, DABA, and Anatoxin-a in Environmental Samples. Toxicon, 76(0): 316-325.
Al-Sammak, M., K. Hoagland, D. Snow, and D. Cassada. 2013. Methods for simultaneous detection of the cyanotoxins BMAA, DABA, and anatoxin-a in environmental samples. Toxicon 76:316-325.Online
Bartelt-Hunt, S. L.; DeVivo, S.; Johnson, L.; Snow, D. D.; Kranz, W. L.; Mader, T. L.; Shapiro, C. A.; van Donk, S. J.; Shelton, D. P.; Tarkalson, D. D.; Zhang, T. C. 2013. Effect of Composting on the Fate of Steroids in Beef Cattle Manure. Journal of Env
Biswas, S., Kranz, W., Shapiro, C., Mamo, M., Bartelt-Hunt, S. L., Snow, D., Shelton, D., Bartelt-Hunt, S. L., Mader, T., van Donk, S., Zhang, T. C. (2013). Use of a surrogate to evaluate the impact of tillage on the transport of steroid hormones from mnuOnline
Gilley, J. E., Bartelt-Hunt, S. L., Lamb, S. J., Li, X., Marx, D., Snow, D., Parker, D. B., Woodbury, B. (2013). Narrow grass hedge effects on nutrient transport following swine slurry application. Transactions of the ASABE, 56, 1441-1450.Online
Gilley, J. E., Bartelt-Hunt, S. L., Lamb, S. J., Li, X., Marx, D., Snow, D., Parker, D. B., Woodbury, B. L. (2013). Runoff nutrient transport as affected by land application method, swine growth stage and runoff rate. Transactions of the ASABE, 56, 1295-1Online
Joy, Stacey ; Bartelt-Hunt, S.; Snow, D. ; Gilley, J.; Woodbury, B.; Parker, D.; Marx, D.; Li, X. 2013. Fate and transport of antimicrobials and antimicrobial resistance genes in soil and runoff following land application of swine manure slurry. EnvironmeOnline
Qi, Y., Snow, D., Bartelt-Hunt, S. L. (2013). Potential water quality impacts orginating from land burial of cattle carcasses. Science of the Total Environment, 456-457, 246-253.Online
Redondo-Solano, M., Valenzuela-Martinez, C., Cassada, D. A., Snow, D., Juneja, V. K., Burson, D., Thippareddi, H. 2013. Effect of Meat Ingredients (Sodium nitrite and erythorbate) and Processing (vacuum storage and packaging atmosphere) on Germination andOnline
Snow, D.D., T.R. Damon-Powell, S. Onanong, and D.A. Cassada. 2013. Sensitive and simplified analysis of natural and synthetic steroids in water and solids using on-line solid phase extraction and microwave-assisted solvent extraction coupled to liquid chr
Stamm, M. D., Heng-Moss, T., Baxendale, F., Siegfried, B., Gaussoin, R. E., Snow, D., Cassada, D. A. (2013). Effect of distribution and concentration of topically-applied neonicotinoid insecticides in buffalograss, Buchloë dactyloides, leaf tissues on theOnline
van Donk, S., Biswas, S., Kranz, W., Snow, D., Bartelt-Hunt, S. L., Mader, T., Shapiro, C., Shelton, D., Tarkalson, D. A., Zhang, T. C., Ensley, S. (2013). Transport of steroid hormones in the vadose zone after land application of beef cattle manure. TranOnline
Zhang, Y., Snow, D., Parker, D., Zhou, Z., Li, X. (2013). Extracellular and Intracellular Antimicrobial Resistance Genes and Antibiotic Levels in the Sludge of Livestock Waste Management Structures. Environmental Science and Technology, 47, 10206-10213.
Zhang, Y., Zhang, C., Parker, D., Snow, D., Zhou, Z., Li, X. (2013). Occurence of antimicrobials and antibiotic resistance genes in beef cattle storage ponds and swine lagoons. Science of the Total Environment, 463-464, 631-638.Online
Zhang, Y.; Zhang, C.; Parker, D.; Snow, D.; Zhou, Z.; Li, X. 2013. Occurrence of Antimicrobials and Antimicrobial Resistance Genes in Beef Cattle Storage Ponds and Swine Lagoons. Science of the Total Environment, 463-464: 631-638Online
Bartelt-Hunt, S.L., D.D. Snow, W.L. Kranz, T.L. Mader, C.A. Shapiro, S.J. van Donk, D.P. Shelton, D.D. Tarkalson, and T.C. Zhang. 2012. Effect of growth promotants on the occurrence of steroid hormones on feedlot soils and in runoff from beef cattle feediOnline
Biswas, S., C. A. Shapiro, W. L. Kranz, T. L. Mader, D. P. Shelton, D. D. Snow, S. L. Bartelt-Hunt, D. D. Tarkalson, S. J. van Donk, T. C. Zhang, S. Ensley. 2012. Current knowledge on the environmental fate, potential impact and management of growth promoOnline
Cavalieri, E., Saeed, M., Zahid, M., Cassada, D., Snow, D., Miljkovic, M., Rogan, E. (2012). Mechanism of DNA depurination by carcinogens in relation to cancer initiation. Biotechnology and Applied Biochemistry, 64, 169-179.Online
Parker, D. B., Gilley, J. E., Woodbury, B. L., Kim, K.-H., Galvin, G., Bartelt-Hunt, S. L., Li, X., Snow, D. (2012). Odorous VOC emission following land application of swine manure slurry. Atmospheric Environment.Online
Snow, D., Cassada, D. A., Bartelt-Hunt, S. L., Li, X., Zhang, Y., Yuan, Q., Sallach, J. B., Zhang, Y. (2012). Detection, occurrence and fate of emerging contaminants in agricultural environments. Water Environment Research. 84: 764-785.
Chokejaroenrat, C., S.D. Comfort, C. Harris, D. Snow, D. Cassada, C. Sakulthaew, and T. Satapanajaru. 2011. Transformation of Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX) by Permanganate. Environ. Sci. Technol., 45:3643-3649Online
Bartelt-Hunt, S. L., D.D. Snow, T. Damon, J. Shockley, and K. Hoagland. 2009. The occurrence of illicit and therapeutic pharmaceuticals in wastewater effluent and surface waters in Nebraska. Environmental Pollution 157:786-791.Online
Bartelt-Hunt, Shannon L. Daniel D. Snow, Teyona Damon, Johnette Shockley, Kyle Hoagland. 2009. The occurrence of illicit and therapeutic pharmaceuticals in wastewater effluent and surface waters in Nebraska. Environmental Pollution. 157(3): 786-791Online
Satapanajaru, T.; Onanong, S.; Comfort, S. D.; Snow, D. D.; Cassada, D. A.; Harris, C., 2009. Remediating dinoseb-contaminated soil with zerovalent iron. Journal of Hazardous Materials, 168, (2-3), 930-937.Online
Sellin, M. K.; Snow, D. D.; Gustafson, S. T.; Erickson, G. E.; Kolok, A. S., 2009. The endocrine activity of beef cattle wastes: Do growth-promoting steroids make a difference? Aquatic Toxicology, 92, (4), 221-227.Online
Sellin, M. K.; Snow, D. D.; Schwarz, M.; Carter, B. J.; Kolok, A. S., 2009. Agrichemicals in Nebraska, USA, Watersheds: Occurrence and Endocrine Effects. Environmental Toxicology and Chemistry, 28, (11), 2443-2448.Online
Sellin, Marlo K., Daniel D. Snow, Debbie L. Akerly, and Alan S. Kolok. 2009. Estrogenic Compounds Downstream From Three Small Cities in Eastern Nebraska: Occurrence and Biological Effect. JAWRA Journal of the American Water Resources Association. 45(1), 1Online
Snow, D. D.; Bartelt-Hunt, S. L.; Devivo, S.; Saunders, S.; Cassada, D. A., 2009. Detection, Occurrence, and Fate of Emerging Contaminants in Agricultural Environments. Water Environment Research, 81, 941-958.Online
Waria, M.; Comfort, S. D.; Onanong, S.; Satapanajaru, T.; Boparai, H.; Harris, C.; Snow, D. D.; Cassada, D. A., 2009. Field-Scale Cleanup of Atrazine and Cyanazine Contaminated Soil with a Combined Chemical-Biological Approach. J Environmental Quality, 38
Snow, Daniel.D. Shannon L. Bartelt-Hunt, S.E. Saunders, S.L. Devivo, and D.A. Cassada. 2008. Detection, Occurrence and Fate of Emerging Contaminants in Agricultural Environments. Water Environment Research (80)10. 868-897.Online
Kolok, Alan S.; Snow, Daniel D.; Kohno, Satomi; Sellin, Marlo K.; Guillette, Louis J. 2007. Occurrence and biological effect of exogenous steroids in the Elkhorn River, Nebraska, USA. Science of the Total Environment, 388(1-3), 104-115.Online
Snow, Daniel D.; Bartelt-Hunt, Shannon L.; Saunders, Samuel E.; Cassada, David A. 2007. Detection, occurrence, and fate of emerging contaminants in agricultural environments. Water Environment Research, 79(10), 1061-1084.Online
Adam, M.A., S.D. Comfort, D.D. Snow, D. Cassada, M.C. Morley, and W. Clayton. 2006. Evaluating ozone as a remedial treatment for removing RDX from unsaturated soils. Journal of Environmental Engineering.132:1580-1588.Online
Batt, Angela .L., Daniel.D. Snow and Diana .S.Aga. 2006. Occurrence of sulfonamide antimicrobials in private water wells in Washington county , Idaho USA. Chemosphere, 64:1963-1971.Online
Young, Travis.S, Matthew. Morley, and Daniel .D. Snow.2006. Anaerobic Biodegradation of Hexahydro-1,3,5-trinitro-1,3,5- triazine (RDX) and Trichloroethylene (TCE): Single- and Dual-Contaminant Batch Tests. Practice Periodical of Hazardous, Toxic, and RadiOnline
Spalding, R.F., M.E. Exner, D.D. Snow, D.A. Cassida, M.E. Burbach, and S.J. Monson. 2003. Herbicides in Ground Water Beneath Nebraska's Management Systems Evaluation Area. Journal of Environmental Quality. 32:92-99.
Spalding, R.F., Watts, D.G., Snow, D.A., Cassada, D.A., Exner, M.E., Schepers, J.S. 2003. Herbicide Loading to Shallow Ground Water beneath Nebraska's Management Systems Evaluation Area. Journal of Environmental Quality. 30(4):1184-1194.
R.F. Spalding, D.D. Snow, and M.E. Exner 2002. Acetamides and their transformation products in groundwater beaneath Nebraska's Management Systems Evaluation Area. pp. 125-128. In Proceedings of the 2nd European Conference on Pesticides and Related Organic
Zhu, J., Snow, D.D., Cassada, D.A., Monson, S.J., Spalding, R.F. 2001. Analysis of oxytetracycline, tetracycline, and chlortetracycline in water using solid phase extraction and liquid chromatography-tandem mass spectrometry. Journal of Chromatography. 92
Cassada, D.A., Zhang, Y., Snow, D.D. Spalding, R.F. 2000. Trace analysis of ethanol and MTBE in water using solid phase microextraction and gas chromatography/mass spectrometry. Analytical Chemistry. Analytical Chemistry. 72(19):4654-4658 (Journal Series
Cassada, D.A., S.J. Monson, D.D. Snow and R.F. Spalding 1999. Sensitive determination of RDX, nitroso-RDX metabolites, and other munitions in ground water by solid-phase extraction and isotope dilution liquid chromatography-atmospheric pressure chemical i
Spalding, R.F., Exner, m.E., Snow, D.D., Stange, M.E. 1999. The Hastings, Nebraska ground water contamination superfund site: A case study in logic and illogic Journal of the Franklin Institute. 335A:141-149 (Journal Series Number:12163).
Snow, D.D. and R.F. Spalding 1997. Short-term aquifer residence times estimated from 222Rn Disequilibrium in artificially discharged ground water. Journal of Environmental Radioactivity. 3(37):307-325.
Martin, G.E., D.D. Snow, E. Kim, and R.F. Spalding 1995. Simultaneous determination of argon and nitrogen. Ground Water. 33(5):781-785 (Journal Series Number:10509)Online
Snow, D.D., and R.F. Spalding 1994. Uranium isotopes in the Platte River drainage basin of the North American High Plains Region. Applied Geochemistry. 9:271-278 (Journal Series Number:10188)Online
Spalding, R.F., D.D. Snow, D.A. Cassada, and M.E. Burbach 1994. Study of Pesticide Occurrence in Two Closely Spaced Lakes in Northeastern Nebraska. Journal of Environmental Quality. 23(3):571-578.
Spalding, R.F., M.E. Exner, G.E. Martin, and D.D. Snow 1993. Effects of sludge disposal on ground water nitrate concentrations. Journal of Hydrology. 142:213-228.
Spalding, R.F., M.E., Exner, G.E. Martin, D.D. Snow. 1993. Effects of Sludge Disposal on Groundwater Nitrate Concentrations. Journal of Hydrology 142(1-4):213-228.



DegreeMajorInstitutionYear Awarded
Doctorate of PhilosophyGeochemistryUniversity of Nebraska-Lincoln1996
Master of ScienceGeochemistryLouisiana State University1988
Bachelor of ScienceGeologyMissouri State University1982





TitleAwarded byYear Awarded
Excellence in Environmental Engineering and Science Grand PrizeAmerican Academy of Environmental Engineers and Scientists, Inc.2015
Water Center Impact Award for USGS104b projectNebraska Water Center and Water Resources Research Institutes2011
Multidisciplinary Research AwardUNL College of Engineering2010
Certificate of Merit, National Meeting PresentationAmerican Chemical Society2002
Graduate Faculty MemberUNL - Institute of Agriculture and Natural Resources2000
Team Effort Award, MSEA Water Quality ProjectUNL - Institute of Agriculture and Natural Resources1997


Professional Organizations

American Chemical Society
American Geophysical Union
National Groundwater Association
Society of Environmental Toxicologists and Chemists (SETAC)
Water Environment FederationLiterature Review Committee (2005-present)




SNR Program Areas

  • Environmental Science

Areas of Interest/Expertise

  • Water Quality
  • Aquatic Chemistry
  • Mass Spectrometry
  • Stable Isotopes
  • Drinking Water
  • Microbiology


Currently this page only displays grants that were awarded on 1/1/ 2009 to the present. If a grant was awarded prior to 1/1/ 2009 and is still active, it will not be displayed on this page.

Grant TitleBazile Creek Nitrate Isotopes
Starting Date04/30/2019


Ending Date08/31/2019
Funding Level$2,081.00
Funding AgencyUpper Elkhorn NRD


Grant TitleImpacts of Agricultural Toxicants on Amphibians in the Rainwater Basin in Central Nebraska
Starting Date10/01/2014


Ending Date12/31/2016
Funding Level$119,971.00
Funding AgencyNebraska Game and Parks Commission


Grant TitleDevelopment of a Simple Concentrator-Detection Kit for Monitoring the Safety of Recycled Water 104b
Starting Date03/01/2013


Ending Date02/28/2014
Funding Level$12,027.00
Funding AgencyUS Department of the Interior - Geological Survey


Grant TitleDevelopment of a Simple Concentrator-Detection Kit for Monitoring the Safety of Recycled Water 104b
Starting Date03/01/2013


Ending Date02/28/2014
Funding Level$12,027.00
Funding AgencyUS Department of the Interior - Geological Survey


Grant TitleAgricultural Tile Drainage Contaminants (additional funding)
Starting Date08/01/2012


Ending Date08/01/2017
Funding Level$19,400.00
Funding AgencyUS Department of the Interior - Fish and Wildlife Service


Grant TitleAgricultural Tile Drainage Contaminants
Starting Date08/01/2012


Ending Date08/01/2017
Funding Level$12,500.00
Funding AgencyUS Department of the Interior - Fish and Wildlife Service


Grant TitleContaminants Project: Sampling Processing & Analysis 2011-2013
Starting Date09/14/2011


Ending Date09/30/2016
Funding Level$22,600.00
Funding AgencyUS Department of the Interior - Fish and Wildlife Service


Grant TitleABR Salmonella in Produces
Starting Date01/01/2011


Ending Date12/31/2014
Funding Level$40,000.00
Funding AgencyUS Department of Agriculture - AFRI


Grant TitleTesting of At-Home Water Test Kits
Starting Date06/04/2010


Ending Date09/03/2010
Funding Level$5,165.00
Funding AgencyHearst Communications


Grant TitleWater Resources Research Institute Annual Base
Starting Date03/01/2010


Ending Date02/28/2011
Funding Level$92,335.00
Funding AgencyUS Department of the Interior - Geological Survey


Grant TitleChemical Fingerprinting of Containment Sources in the Shell Creek Watershed Using Passive Samplers
Starting Date08/01/2008


Ending Date12/31/2010
Funding Level$35,617.00
Funding AgencyNebraska Department of Environmental Quality



Graduate Programs

Master of Applied Science

Master of Science in Natural Resource Sciences
including specializations in

  • Hydrological Sciences

Doctorate of Philosophy in Natural Resource Sciences
including specializations in

  • Hydrological Sciences

Courses Taught

Course NumberCourse TitleFall Even YearsFall Odd YearsSpring Even YearsSpring Odd YearsSummer SessionCross Listing
NRES 439/839Environmental Laboratory Instrumentation and Methods XX
NRES 475/875Water Quality StrategyAGRO/CIVE/ CRPL/GEOL/ MSYM/NRES/ POLS/SOCI 475/875; SOILS/WATS 475