期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：199
期号：2
页码：022018
DOI：10.1088/1755-1315/199/2/022018
语种：English
出版社：IOP Publishing
摘要：Using investigation on Cadmium (Cd) in bottom waters in this bay during 1984-1988, this paper analyzed the pollution level, horizontal distribution and settlement process of Cd. Results showed that Cd contents in all of the sampling days except July 1986 were lower than 1.0 μg L−1 and were conform wo Grade I, while Cd contents in July 1986 were higher than 1.0 μg L−1 and were conform wo Grade II. The pollution levels of the Cd in bottom waters in Jiaozhou Bay during 1984-1988 were still very slight. The settlement processes were determined by source input, vertical water's effect and horizontal water's effect, and the high sediment processes were resulting in accumulation effects in bottom waters. Cd sourced from river runoff was able to arrive the bottom waters in the inner side of the bay mouth, the bay mouth and the outer side of the bay mouth. Cd sources from marine current could impact bottom waters in the inner and outer side of the bay mouth. In case of the source strength of marine current was relative high, there was high settlement process in the outer side of the bay mouth. In case of the source strength of river runoff was relative high, there was high settlement process in the inner side of the bay mouth.
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