Temporal variations of Cu in Jiaozhou Bay 1982_1986

[摘要] This paper analyzed the temporal variations of Cu in Jiaozhou Bay during 1982-1986. Results showed that Cu contents in study years were 0.15-5.31 μg L-1, 0.77-20.60 μg L-1, 0.11-4.00 μg L-1, 0.10-0.43 μg L-1and 0.18-0.77 μg L-1, respectively. The Cu pollution level in this bay was moderate during 1982-1983, yet for temporal variations Cu contents in surface waters were showing decreasing trend. Cu contents in spring, summer and autumn were 0.11-20.60 μg L-1, 0.10-4.86 μg L-1and 0.11-3.56 μg L-1, respectively. This bay was moderate pollution in spring in 1982-1983, while in other seasons in study years was still slight. These indicated that the temporal variations of Cu pollution in this bay should be taken in to account in decision-making of pollution control practice.

[发布机构] Research Center for Karst Wetland Ecology, Guizhou Minzu University, Guiyang; 550025, China^1;College of Chemistry and Environmental Science, Guizhou Minzu University, Guiyang; 550025, China^2;North China Sea Environmental Monitoring Center, SOA, Qingdao; 266033, China^3

[关键词] Cu content;Jiaozhou Bay;Pollution level;Spring-in;Temporal variation