PCBs AND OCPs IN SOIL SAMPLED ALONG THE LENA RIVER VALLEY,RUSSIA
The PCBs and OCPs levels were determined in background soil samples along the Lena River valley from the upper stream of the river in the Irkutsk Region in the south to the Arctic Ocean in the north. Soil samples were collected from 21 sites in the Lena River valley from Ust-Kut (first big river port on the river located in the Irkutsk Region) to the delta of the river and cape of Neelova on the north during the expedition on ship Moskovskiy 11 in summer of 2003 and from 2 sites in the previous study in 2001. It was found that the spatial distributions of PCBs, DDTs and HCHs in soil samples from background areas are wave-like. PCB levels (2.28- 17.2 ng/cm2) are higher in the south and north parts of the investigated distance and are lower in the middle part of the Lena River stream. DDT levels (0.11-3.04 ng/cm2) are higher in upper and in half of middle stream of the river with decreasing in northern direction. The variation of HCH from the south to the north differs from PCB and DDT distribution. The HCH levels (0.14-11 ng/cm2) distribute as convex arcs with elevation in middle parts of the Lena River.
Kuzmin M I Mamontova E A Tarasova E N Mamontov A A Khomutova M Yu
Vinogradov Institute of Geochemistry,Siberian Branch,Russian Academy of Sciences,664033,PO Box 412,Irkutsk,Russia
国际会议
北京
英文
1-6
2009-08-24（万方平台首次上网日期，不代表论文的发表时间）