RYAN LEPAK
RYAN LEPAK
Postdoc - USEPA, NSF - PRFB Cornell University
Verified email at wisc.edu
TitleCited byYear
Use of stable isotope signatures to determine mercury sources in the Great Lakes
RF Lepak, R Yin, DP Krabbenhoft, JM Ogorek, JF DeWild, TM Holsen, ...
Environmental Science & Technology Letters 2 (12), 335-341, 2015
672015
Isotopic signatures of mercury contamination in latest Permian oceans
SE Grasby, W Shen, R Yin, JD Gleason, JD Blum, RF Lepak, JP Hurley, ...
Geology 45 (1), 55-58, 2017
542017
Mercury isotopes as proxies to identify sources and environmental impacts of mercury in sphalerites
R Yin, X Feng, JP Hurley, DP Krabbenhoft, RF Lepak, R Hu, Q Zhang, Z Li, ...
Scientific reports 6, 18686, 2016
352016
Distribution and geochemical speciation of soil mercury in Wanshan Hg mine: Effects of cultivation
R Yin, C Gu, X Feng, JP Hurley, DP Krabbenhoft, RF Lepak, W Zhu, ...
Geoderma 272, 32-38, 2016
222016
Effects of mercury and thallium concentrations on high precision determination of mercury isotopic composition by Neptune Plus multiple collector inductively coupled plasma …
R Yin, DP Krabbenhoft, BA Bergquist, W Zheng, RF Lepak, JP Hurley
Journal of Analytical Atomic Spectrometry 31 (10), 2060-2068, 2016
222016
Historical records of mercury stable isotopes in sediments of Tibetan lakes
R Yin, X Feng, JP Hurley, DP Krabbenhoft, RF Lepak, S Kang, H Yang, ...
Scientific reports 6, 23332, 2016
192016
Sedimentary records of mercury stable isotopes in Lake Michigan
R Yin, RF Lepak, DP Krabbenhoft, JP Hurley
Elem Sci Anth 4, 2016
172016
Influence of Cladophora–Quagga Mussel Assemblages on Nearshore Methylmercury Production in Lake Michigan
RF Lepak, DP Krabbenhoft, JM Ogorek, MT Tate, HA Bootsma, JP Hurley
Environmental science & technology 49 (13), 7606-7613, 2015
132015
Anomalous mercury enrichment in Early Cambrian black shales of South China: Mercury isotopes indicate a seawater source
R Yin, L Xu, B Lehmann, RF Lepak, JP Hurley, J Mao, X Feng, R Hu
Chemical Geology 467, 159-167, 2017
112017
Mercury isotope constraints on the source for sediment-hosted lead-zinc deposits in the Changdu area, southwestern China
C Xu, R Yin, J Peng, JP Hurley, RF Lepak, J Gao, X Feng, R Hu, X Bi
Mineralium Deposita 53 (3), 339-352, 2018
92018
Factors affecting mercury stable isotopic distribution in piscivorous fish of the Laurentian Great Lakes
RF Lepak, SE Janssen, R Yin, DP Krabbenhoft, JM Ogorek, JF DeWild, ...
Environmental science & technology 52 (5), 2768-2776, 2018
92018
Mercury inputs to Chinese marginal seas: impact of industrialization and development of China
R Yin, Z Guo, L Hu, W Liu, JP Hurley, RF Lepak, T Lin, X Feng, X Li
Journal of Geophysical Research: Oceans 123 (8), 5599-5611, 2018
72018
Rapid pre-concentration of mercury in solids and water for isotopic analysis
SE Janssen, RF Lepak, MT Tate, JM Ogorek, JF DeWild, CL Babiarz, ...
Analytica chimica acta 1054, 95-103, 2019
42019
Magmatic-hydrothermal origin of mercury in Carlin-style and epithermal gold deposits in China: evidence from mercury stable isotopes
R Yin, C Deng, B Lehmann, G Sun, RF Lepak, JP Hurley, C Zhao, G Xu, ...
ACS Earth and Space Chemistry 3 (8), 1631-1639, 2019
22019
Mercury isotopes reveal an ontogenetic shift in habitat use by walleye in lower Green Bay of Lake Michigan
CP Madenjian, SE Janssen, RF Lepak, JM Ogorek, TJ Rosera, JF DeWild, ...
Environmental Science & Technology Letters 6 (1), 8-13, 2018
22018
Consistent trace element distribution and mercury isotopic signature between a shallow buried volcanic-hosted epithermal gold deposit and its weathered horizon
R Yin, X Pan, C Deng, G Sun, SY Kwon, RF Lepak, JP Hurley
Environmental Pollution, 113954, 2020
2020
Isolation of methylmercury using distillation and anion-exchange chromatography for isotopic analyses in natural matrices
TJ Rosera, SE Janssen, MT Tate, RF Lepak, JM Ogorek, JF DeWild, ...
Analytical and Bioanalytical Chemistry 412 (3), 681-690, 2020
2020
Mercury isotopes in frozen soils reveal transboundary atmospheric mercury deposition over the Himalayas and Tibetan Plateau
J Huang, S Kang, R Yin, J Guo, R Lepak, S Mika, L Tripathee, S Sun
Environmental Pollution 256, 113432, 2020
2020
Mercury source changes and food web shifts alter contamination signatures of predatory fish from Lake Michigan
RF Lepak, JC Hoffman, SE Janssen, DP Krabbenhoft, JM Ogorek, ...
Proceedings of the National Academy of Sciences 116 (47), 23600-23608, 2019
2019
A multi-stable isotope approach to determine mercury sources in migratory and resident coastal fishes
S Janssen, JC Hoffman, R Lepak, M Bruce, G Peterson, C Anne, ...
2019 CERF Biennial Conference, 2019
2019
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