Seasonal-temporal variations of Cd contents on in Jiaozhou Bay 1984-1988

2018 International Conference on Advanced Electronic Materials, Computers and Materials Engineering

材料科学;无线电电子学;计算机科学

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

Accountancy School, Xijing University, Xian

710123, China^1

North China Sea Environmental Monitoring Center, SOA, Qingdao

266033, China^2

关键词: Cadmiums (Cd);    Environmental remediation;    Pollution level;    Seasonal variation;    Source control;    Spatial variations;    Temporal variation;    Water environmental capacities;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/439/3/032099/pdf
DOI  :  10.1088/1757-899X/439/3/032099

来源: IOP

【 摘 要 】

This paper analyzed the seasonal and spatial variations of Cadmium (Cd) in Jiaozhou Bay during 1984-1988. Results showed that Cd contents in Jiaozhou Bay in 1984, 1985, 1986, 1987 and 1988 were 0.06-0.20 g L-1, 0.03-0.44 g L-1, 0.01-6.48 g L-1, 0.07-0.12 g L-1, and 0.03-1.07 g L-1, respectively. The pollution levels of Cd in Jiaozhou Bay in 1984, 1985, 1986, 1987 and 1988 were Grade I, I, I-III and V, I, and I-II, respectively. The seasonal variation of Cd contents was summer > spring > autumn. The pollution level of Cd during 1984-1985 was still slight, while the pullution level during 1986-1988 was tending to be aggravating to be slight/moderate. In general, the source input of Cd to this bay was increasing during the five-year period, and the pollution level of Cd would be aggravating since the water environmental capacity was not infinite. As a whole, source control was one of the basic contourmeasures for pollution control and environmental remediation in this bay.