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Ryan Lepak
Ryan Lepak
US Environmental Protection Agency
Verifisert e-postadresse på wisc.edu
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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
2002017
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
1322015
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 (1), 18686, 2016
1012016
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
1002016
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
682017
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
632016
Mercury methylation genes identified across diverse anaerobic microbial guilds in a eutrophic sulfate-enriched lake
BD Peterson, EA McDaniel, AG Schmidt, RF Lepak, SE Janssen, PQ Tran, ...
Environmental Science & Technology 54 (24), 15840-15851, 2020
552020
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
502018
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 (1), 23332, 2016
502016
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
462019
Sedimentary records of mercury stable isotopes in Lake Michigan
R Yin, RF Lepak, DP Krabbenhoft, JP Hurley
Elementa 4, 000086, 2016
362016
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
352018
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
332019
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, 339-352, 2018
332018
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
312019
Resolving atmospheric mercury loading and source trends from isotopic records of remote North American lake sediments
RF Lepak, SE Janssen, DR Engstrom, DP Krabbenhoft, MT Tate, R Yin, ...
Environmental science & technology 54 (15), 9325-9333, 2020
292020
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
282020
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
262015
Enhanced susceptibility of methylmercury bioaccumulation into seston of the Laurentian Great Lakes
JM Ogorek, RF Lepak, JC Hoffman, JF DeWild, TJ Rosera, MT Tate, ...
Environmental science & technology 55 (18), 12714-12723, 2021
192021
Isotopic tracing of mercury sources in estuarine-inner shelf sediments of the East China Sea
X Sun, R Yin, L Hu, Z Guo, JP Hurley, RF Lepak, X Li
Environmental pollution 262, 114356, 2020
192020
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Artikler 1–20