%0 Journal Article
%A LUAN Yue-sheng
%A ZHANG Wei
%A SHI Gang
%A WU Min
%A LIN Li
%T Spatial Distribution  and Pollution Evaluation of Heavy Metals in a Lake Sediment  in Ezhou City of Hubei Province
%D 2020
%R 10.11988/ckyyb.20181371
%J Journal of Yangtze River Scientific Research Institute
%P 30-36
%V 37
%N 1
%X On the basis of investigation and analysis of heavy metals in the sediment  of an urban lake in Ezhou, Hubei Province, the heavy metals in the sediment  were evaluated according to geologic accumulation index and potential ecological hazard index. Results indicated that heavy metal concentration in the sediment  declined from top to bottom, and the heavy metal content in the upper sediment  was the highest. The west  region of   lake subjected to the most severe pollution of heavy metals, followed by the east  region and the middle  region in sequence. In terms of geological accumulation index, heavy metals in the sediment  were mainly pollution-free to moderately  polluted; the pollution degree of different heavy metals followed the order of Cd>Zn>Cu>Pb>Ni>Cr>Hg>As. According to the potential ecological risk index, As, Ni, Cu, Pb, Cr and Zn in the sediment  posed low ecological risk, whereas Cd and Hg had potential ecological risk at different degrees, and Cd  posed the highest ecological risk.
%U http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20181371