(Article of periodic en Anglais - 2012)

Document title

Pollution assessment of heavy metals along the Mekong River and dam effects

Authors(s) and Affiliation(s)

FU K. (1 2) ; SU B. (1 2) ; HE D. (1 2) ; LU X. (3) ; SONG J. (1 2) ; HUANG J. (1 2) ;
(1) Asian International Rivers Center, Yunnan University, Kunming, CHINE
(2) Yunnan Key Lab. for International Rivers and Transboundary Ecology Security, Kunming, CHINE
(3) Dep. of Geography, National University of Singapore, Singapore, SINGAPOUR


In this study, 8 sampling sites were selected to collect the bed sand samples along the mainstream of the Mekong River. In addition, the contents of 5 heavy metal elements and their spatial variability along the mainstream of the river were analyzed. The results of the geoaccumulation index reveal that contaminations caused by Zn and Pb while Pb and As are more than those by Zn in Upper Mekong. Cr is the primary pollutant in the Lower Mekong. The potential ecological risk index indicates that the potential ecological risk of heavy metals in the mainstream of the Mekong River is low. The AA. argue that the pollution of water and contamination of heavy metals in bed sediment caused by mining of mineral resources or geochemical background values in the Mekong is not transmitted from the Upper to the Lower Mekong because of the reservoir sedimentation and dilution along the river


Article of periodic

published at : Journal of geographical sciences. Acta geographica sinica / ISSN 1009-637X

Editor : CHINE

Millesime : 2012, vol. 22, no5 [pp. 874-884]

Bibliographic references : 47 ref.

Collation : 4 fig., 7 tabl.



Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1007/s11442-012-0969-3

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