Horizontal Distribution Trends of Hg in Marine Bay 1989

International Conference on Manufacturing Technology, Materials and Chemical Engineering

机械制造;材料科学;化学工业

Yang, Dongfang^1,2 ; Zhang, Xiaolong^1 ; Lin, Dong^1 ; Wang, Qi^1 ; Li, Haixia^1

Accountancy Shool, Xijing University, Xian

710123, China^1

North China Sea Environmental Monitoring Center, SOA, Qingdao

266033, China^2

关键词: Accumulation effects;    Dilution effect;    Horizontal distribution;    Jiaozhou Bay;    Land surface;    Pollution level;    Rainy seasons;    Seasonal variation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/392/4/042007/pdf
DOI  :  10.1088/1757-899X/392/4/042007

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

This paper analyzed the contents and distribution trends of Hg in surface and bottom waters in April and July 1989. Results showed that Hg contents in surface and bottom waters were 0.066-0.146 μg L-1 and 0.064-0.109 μg L-1, respectively. In July 1989, Hg contents in surface and bottom waters were 0.005-0.046 μg L-1 and 0.012-0.017 μg L-1, respectively. The pollution level of Hg in Jiaozhou Bay 1989 was still slight. The seasonal variations of Hg in both surface and bottom waters were spring > summer. The seasonal variations of Hg contents in surface waters were determined by the changes of the major Hg sources, while the corresponding seasonal variations of Hg contents in bottom waters were results of accumulation effect and dilution effect of waters. There was about a period of six months between the end of the rainy season to the beginning of the rainy season in the flowing year, in which a big part of Hg was accumulated in land surface and river bed. By means of vertical water's effect, the horizontal distribution trends of Hg in surface and bottom waters were consistent no matter in different seasons.