摘要
The trends of distribution,translocation and seasonal change of heavy metal Pb were studied based on the surface and bottom water sampling in Jiaozhou Bay in 1979,and compared with those in 1990's.The results showed that the source of Pb in the bay was from wastewater and sewage in the east of Jiaozhou Bay from ocean vessels.Pb concentration was higher in spring and lower in summer and autumn,and remained stable through sedimentation in the bottom layer.The overall water quality was good in 1970's.Compared with the environmental monitoring data of 1995-1999,Pb pollution had become serious.Therefore,more efforts should be made to protect the bay from Pb pollution.
The trends of distribution, translocation and seasonal change of heavy metal Pb were studied based on the surface and bottom water sampling in Jiaozhou Bay in 1979, and compared with those in 1990＇s. The results showed that the source of Pb in the bay was from wastewater and sewage in the east of Jiaozhou Bay from ocean vessels. Pb concentration was higher in spring and lower in summer and autumn, and remained stable through sedimentation in the bottom layer. The overall water quality was good in 1970＇s. Compared with the environmental monitoring data of 1995-1999, Pb pollution had become serious. Therefore, more efforts should be made to protect the bay from Pb pollution.
基金
Funded by Key Laboratory of Marine Spill Oil Identification and Damage Assessment Technology, SOA, the Director’s Foundation of the Beihai Monitoring Center, the State Oceanic Administration
a Project of Chinese Academy of Science (KZCX 2-207)
关键词
重金属
铅
污染源
胶州湾
heavy metal Pb
distribution
pollution source
translocation
Jiaozhou Bay
