个人简介

Ph.D. in Earth and Environ. Sci./Marine Geochemistry, Columbia University

研究领域

Analytical Chemistry

Human impact on our environment has created a variety of problems that require fundamental understanding of natural systems. My research is focused on the biogeochemical cycles of elements in the environment. For example, I investigated the marine geochemistry of Cd, as well as several oxyanion elements, such as Ge, Mo and U, particularly the biogeochemical processes responsible for removal of these elements in the ocean. Currently, investigation of geochemistry of another oxyanion element, As, is being conducted in Bangladesh groundwater system and Maine, USA (http://superfund.ciesin.columbia.edu). Investigation of sulfur biogeochemistry is being carried out in groundwater system and estuary. Studies of inorganic and organic contaminants and hypoxia on living resources of the bays and basins of western Long Island Sound are being conducted. Field sampling and laboratory measurements of elements and isotopes are combined to study the biogeochemical cycles of elements. My laboratory also develops analytical methods that are suitable for field measurements as well as for rapid analyses of environmental samples. Our understanding of controls of element movement in nature enables us to make wiser decisions on environmental problems facing society today.

近期论文

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Datta, S., Mailloux, B., Hoque, M.A., Jung, H.-B., Stute, M., Ahmed, K.M., Zheng, Y., 2009. Enrichment of Arsenic in Sediments from the Meghna River Bank in Bangladesh: Implication for Recycling of Arsenic. Proc Natl Acad Sci U S A. www.pnas.org/cgi/doi/10.1073/pnas.0908168106. Yu, G., D. Sun and Y. Zheng, 2007. Health effects of exposure to natural arsenic from groundwater and coal in China: An overview of occurrence, Environmental Health Perspective, 115(4) 636-642. Zheng, Y., A. van Geen, M. Stute, R. Dhar, Z. Mo, Z. Cheng, A. Horneman, I. Gavrieli, H.J. Simpson, R. Versteeg, M. Steckler, A. Grazioli-Venier, S. Goodbred, M. Shanewaz, M. Shamsudduha, M. A. Hoque, and K. M. Ahmed, 2005, Geochemical and hydrogeological contrasts between shallow and deeper aquifers in two villages of Araihazar, Bangladesh: Implications deeper aquifers as drinking water sources, Geochim. Cosmochim. Acta, 69:5203-5218 Zheng, Y., M. Stute, A. van Geen, I. Gavrieli, R. Dhar, H. J. Simpson, K. M. Ahmed, 2004, Redox Control of Arsenic Mobilization in Bangladesh Groundwater, Applied Geochemistry 19:201-214. Zheng, Y., R. F Anderson, A. van Geen, and J. S. Kuwabara, 2000, Controls of authigenic Mo formation in marine sediment: Linkage to pore water sulfide, Geochim. Cosmochim Acta, 64(23):4165-4178