期刊
MARINE POLLUTION BULLETIN
卷 164, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2021.112047
关键词
Quanzhou Bay; Typhoon Fung-wong; Heavy metal; Second pollution
资金
- National Science Foundation of China (NSFC) [41976050, 41676028]
- Scientific Research Foundation of the Third Institute of Oceanography, Ministry of Natural Resources [TIO2019028, TIO2019007]
The study shows that after the typhoon, the salinity in Quanzhou Bay decreased, while the concentrations of heavy metals increased, mainly from natural sources. Sediments were found to be an important source of heavy metals in suspended particles under the influence of the typhoon.
The concentrations of Cr, Ni, Cu, Zn, As, Cd, Pb, and Al in suspended particles were measured, and temperature, salinity, flow velocity and direction during a tidal cycle were observed before and after Typhoon Fung-wong at six stations in Quanzhou Bay, respectively. The comparison results show that, after the typhoon, the salinity in Quanzhou Bay decreased, whereas the concentrations of heavy metals increased by a factor of between 2 and 10, and the high heavy metal concentration corresponded to the low value of ratio between heavy metals and Al (HMs/Al), suggesting that these increased heavy metals were mainly from natural sources. Instantaneous unit width flux calculations for heavy metals at different stations indicate that sediments are an important source of heavy metals in suspended particles under the influence of typhoon, which has significantly contribution to understanding the impact of typhoons on the heavy metal pollution in the coastal area.
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