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Mercury Hazards to Living Organisms - Chapter 5

Chia sẻ: Nguyen Nhi | Ngày: | Loại File: PDF | Số trang:14

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Mercury Hazards to Living Organisms - Chapter 5

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PART 2 Mercury Concentrations in Field Collections of Abiotic Materials, Plants, and Animals © 2006 by Taylor & Francis Group, LLC CHAPTER 5 Mercury Concentrations in Abiotic Materials Mercury burdens in sediments and other nonbiological materials are estimated to have increased up to five times prehuman levels, primarily as a result of anthropogenic activities (USNAS, 1978). Maximum increases are reported in freshwater and estuarine sediments and in freshwater lakes and rivers, but estimated increases in oceanic waters and terrestrial soils have been negligible (USNAS, 1978). Methylmercury accounts for a comparatively small fraction of the total mercury found in sediments, surface waters, and sediment...

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