Author(s): Diana Andreeva; Liubov Kondrateva
Linked Author(s):
Keywords: Ecological risk; Hydrogen sulfide zones; Sulfate reduction; Amur River
Abstract: The article explores the peculiarities of water quality formation at the Amur River transboundary area under the influence of sulfate reduction processes taking place within bottom sediments. Below the Songhua River mouth, the Amur water quality is affected by the flow of this rightbank tributary (Heilongjiang province) and municipal wastewaters discharged from the Chinese city of Fuyuan. To prediction the contamination of bottom waters with toxic hydrogen sulfide, we suggest using the coefficient of ecological risk of formation of local hydrogen sulfide zones. The coefficient is calculated by determining the quantitative relation between two bacteriobenthos groups (sulfate reducing/ammonifying bacteria). This coefficient makes it possible to determine the intensity of toxic H2S formation in the water-bottom contact area during water ecosystem eutrophication.
Year: 2013