Distribution of Metals in Water, Bottom Silt, and on Suspensions in the Arms of the Selenga Delta
Z. I. KHAZHEEVA, A. K. TULOKHONOV and S. D. URBAZAEVA
Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, Ul. Sakhyanovoy 6, Ulan Ude 670047 (Russia)
E-mail: zkhazh@binm.bscnet.ru
Pages: 279-286
Abstract
Distribution of heavy metals in water, bottom silt, and on suspensions in the mouth area of the river and in the arms of the Selenga delta has been investigated. It has been found that significant part of Pb and Cu is sorbed on suspension. Cu, Fe, and Mn content in the water of the arms before the confluence into Lake Baikal increases in the spring and exceeds the admissible concentration limit for fish-economic water bodies. The analysis of seasonal dynamics of the content of elements in water demonstrates that maximal content of Pb, Zn, Cu, Fe, and Mn in water is observed in the spring and in winter; in the rest of the time of year, it flattens at a level of minimal autumn values.
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