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wright1292547695.pdf (474 KB)
ETD Abstract Container
Abstract Header
Dimethylmercury Production in Freshwater Sediments
Author Info
Kelly, David C.
Permalink:
http://rave.ohiolink.edu/etdc/view?acc_num=wright1292547695
Abstract Details
Year and Degree
2010, Master of Science (MS), Wright State University, Earth and Environmental Sciences.
Abstract
Dimethylmercury (DMHg) has been examined almost exclusively in marine environments to date, plays an uncertain role in the global cycling of Hg, and is produced by a currently unknown mechanism in natural systems. We examined DMHg production in microcosms containing 100 cm3 of freshwater sediment sampled from 3 wetlands and a lake near Dayton, Ohio. DMHg was produced from all sediments analyzed, and found that production is increased significantly by the addition of inorganic Hg from ~0.1pM to ~10pM, its production is unaffected by autoclaving the sediment, and organic carbon additions had no discernible effect on production. Its total concentrations are most likely the result of an interaction between methylating and demethylating processes. These results suggest that DMHg production may be pervasive among freshwater sediments.
Committee
Abinash Agrawal, PhD (Advisor)
Chad Hammerschmidt, PhD (Committee Member)
Amy Burgin, PhD (Committee Member)
Pages
63 p.
Subject Headings
Environmental Science
Keywords
Dimethylmercury
;
freshwater sediment
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Citations
Kelly, D. C. (2010).
Dimethylmercury Production in Freshwater Sediments
[Master's thesis, Wright State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=wright1292547695
APA Style (7th edition)
Kelly, David.
Dimethylmercury Production in Freshwater Sediments.
2010. Wright State University, Master's thesis.
OhioLINK Electronic Theses and Dissertations Center
, http://rave.ohiolink.edu/etdc/view?acc_num=wright1292547695.
MLA Style (8th edition)
Kelly, David. "Dimethylmercury Production in Freshwater Sediments." Master's thesis, Wright State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=wright1292547695
Chicago Manual of Style (17th edition)
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Document number:
wright1292547695
Download Count:
836
Copyright Info
© 2010, all rights reserved.
This open access ETD is published by Wright State University and OhioLINK.