Journal
ENVIRONMENTAL POLLUTION
Volume 156, Issue 2, Pages 270-277Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2008.02.014
Keywords
Heavy metals; Dissolved metal contents; Water quality; Asian rivers; Tibetan Plateau
Categories
Funding
- EU
- city of Mikkeli, Finland
- The Network for University Co-operation Tibet-Norway
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The water used by 85% of the Asian population originates in Tibetan Plateau. During April and May of 2006, water samples were collected from four major Asian rivers in the Plateau (i.e. the Salween, Mekong, Yangtze River and Yarlung Tsangpo) and analyzed for Cu, Pb, Zn, Ag, Mo, Cd, Co, Cr, Ni, Li, Mn, Al, Fe, Mg and Hg. The results showed that elements such as Mg were rather high in Tibetan rivers, giving a mean electrical conductance of 36 mS/m. In a few locations, the results also showed relatively high concentrations of Al and Fe (> 1 mg/L). However, the concentrations of Cu, Zn, Ag, Cd, and Cr were generally low. Contamination with Pb was identified at a few locations in the Salween and Ni at a few sites in the Yangtze River. (C) 2008 Elsevier Ltd. All rights reserved.
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