Content and Distribution of Cr in Bottom Waters in Jiaozhou 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^1,2,3 ; Su, Chunhua^1,2 ; Wang, Zhikang^1,2 ; Wu, Yunjie^1,2 ; Zhu, Sixi^1,2

Research Center for Karst Wetland Ecology, Guizhou Minzu University, Guizhou Guiyang, Guizhou Guiyang, China^1

College of Chemistry and Environmental Science, Guizhou Minzu University, Shanghai

550025, China^2

North China Sea Environmental Monitoring Center, SOA, Qingdao

266033, China^3

关键词: Bottom water;    Closed bay;    Jiaozhou Bay;    Migration process;    Pollution level;    Seawater quality;    Shandong province;    Waterbodies;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/392/4/042006/pdf
DOI  :  10.1088/1757-899X/392/4/042006

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Jiaozhou Bay is a semi-closed bay located in Shandong Province, China. Using investigation data on Chromium (Cr) in bottom waters in April and July 1989, this paper analyzed the contents and distributions of Cr. Results showed that Cr contents in bottom waters April and July were 1.18-1.38 μg L-1 and 1.08 μg L-1, respectively. These contents were much lower than the Grade I (50 μg L-1) for Cr in Sea Water Quality Standard (GB 3097-1997). The pollution level of Cr in bottom waters in Jiaozhou Bay in 1989 was very slight. By means of vertical water's effect, there was a relative high value region in bottom waters in April 1989. In general, Cr contents in bottom waters would be relative high/low in case that Cr contents in surface waters were high/low. During the migration process of Cr in marine bay, in any time or in any region, Cr is firstly inputted to surface waters, and then is transporting through water body and finally arriving at sea bottom. By means of vertical water's effect, Cr is settling to sea bottom rapidly.