Input pathways of cadmium in Jiaozhou Bay 1989

2018 International Conference on Advanced Materials, Intelligent Manufacturing and Automation

材料科学;机械制造;运输工程

Yang, Dongfang^1,2 ; Zhang, Xiaolong^1 ; Zhang, Yuan^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: Cadmiums (Cd);    Environmental remediation;    Overland runoffs;    Pollution level;    River discharge;    Seawater quality;    Shandong province;    Source strength;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/382/5/052042/pdf
DOI  :  10.1088/1757-899X/382/5/052042

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Many marine bays bave been polluted by Cadmium (Cd) due to the rapid development of industry, and identifying the sources and understanding the input pathways are essential to environmental remediation. This paper analyzed the contents, pollution levels, sources and input pathways in Jiaozhou Bay, Shandong Province, eastern China in 1989. Results showed that Cd contents in surface waters in April, July and October 1989 were 0.04-0.13 μg L-1, 0.07-0.40 μg L-1 and 0.09-7.31μg L-1, respectively. In according to Chinese Sea Water Quality Standard (GB 3097-1997), the water quality for Cd in April and July 1989 was Class I, while the high value in October was Class III. In general, The pollution levels of Cd in this bay in 1989 were slight and moderate. The major input pathways of Cd in this bay were river discharge and overland runoff, whose source strengths were 0.13-0.40 μg L-1 and 7.31 μg L-1, respectively. These indicated that Cd pollution in river discharge was still very slight, yet in overland runoff was moderate. Targeted countermeasures should be putted into effect in according to the input pathways.