Influencing factors on the horizontal and vertical migration of Cr in marine bay

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 ; Jing, Dongmei^1 ; Zhang, Longlei^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: Bottom water;    Cadmiums (Cd);    Cr content;    Jiaozhou Bay;    Loss rates;    Migration path;    Vertical migration;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/392/4/042050/pdf
DOI  :  10.1088/1757-899X/392/4/042050

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

This paper analyzed the horizontal and vertical migration processes of Cadmium (Cd) and the influencing factors in Jiaozhou Bay in 1989. Results showed that the absolute horizontal losses of Cr were 0.20-0.89 μg L-1, and the relative horizontal losses of Cr were 14.49-46.84%, respectively. The absolute vertical dilution of Cd was 0.52-0.56 μg L-1, and the relative vertical dilution of Cr was 27.36-34.14%. The absolute vertical accumulation of Cd was 0.17 μg L-1, and the relative vertical accumulation of Cr was 14.40%. Once migrating from the bay center to the bay mouth, Contents in both surface and bottom were decreasing in a certain degree. In case of the loss rate of Cr in surface water was relative high, the loss rate of Cr in bottom water would also be relative high, and vice versa. The changing of Cr contents in surface and bottom waters were determined by the changing of the source inputs and the distance of migration paths.