Distribution of Dissolved Heavy Metals in Sea Water of the Bohai Bay
The water samples of different areas at Bohai Bay were collected in 2004 to explore the distributions of heavy metals and the key factors affecting it. The concentrations of six dissolved heavy metals from 17 sampling sites were measured by atomic absorption spectrometer (AAS). The average concentration of Cu, Zn, Pb, Cd, Hg and As were 4.43± 2.85μg/L, 79.56±85.06μg/L, 8.38±6.20μg/L, 0.38±0.19μg/L, 0.08± 0.05μg/L and 1.53±0.71μg/L and the maximum vues of each metal were 16.3μg/L (site 6), 387μg/L(site 12) and 27.17μg/L(site 8), 0.79μg/L(site 16), 0.22μg/L(site 10) and 3.44μg/L(site 8 and 4), respectively. The concentration of Cd and As from all 17 sampling sites were lower than the first class seawater quality standard of China (SWQSC-I). The measurements of different areas indicated that the distributions of dissolved Cu, Zn Pb, Cd and As were all descended from the estuarine areas to the central sea areas, where Hg is an exception. The relatively higher concentration of Hg did not only occur in inshore but also in offshore areas. Transportation of pollutants from land to sea was supposed to be the main factor influencing the distribution patterns of dissolved heavy metals, but the dynamics of sea water masses and geochemical processes may be important too, and the biochemical processes might further complicate the distributions of metals.
Dissolved heavy metals Distribution Bohai bay Correlation
PENG Shitao WU Can DAI Mingxin ZHAN Shuifen ZHOU Ran BAI Zhipeng
Tianjin Research Institute for Water Transport Engineering, Tianjin 300456, China College of Environ College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China Tianjin Research Institute for Water Transport Engineering, Tianjin 300456, China
国际会议
The 6th International Symposium of Asia Institute of Urban Environment(亚洲城市环境学会第六届国际会议)
长春
英文
693-696
2009-09-20（万方平台首次上网日期，不代表论文的发表时间）