文献类型：期刊文献

英文题名：Metal speciation and pollution assessment of Cd and Pb in intertidal sediments of Donghai Island, China

作者：Zhang, Jibiao[1];Yang, Bo[1];Chen, Tao[1];Sun, Xingli[1];Chen, Chunliang[1]

机构：[1]Guangdong Ocean Univ, Monitoring Ctr Marine Resources & Environm, Zhanjiang 524088, Peoples R China

年份：2016

卷号：6

起止页码：37

外文期刊名：REGIONAL STUDIES IN MARINE SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000414769800006)、、Scopus(收录号：2-s2.0-84962385216)、WOS

基金：This work was supported by the Public Science and Technology Research Funds Projects of Ocean, China (201305038-6 and 201505027-1) and the Science and Technology Planning Project of Guangdong Province, China (2013B021600015).

语种：英文

外文关键词：Cadmium; Lead; Metal speciation; Intertidal sediments; Donghai Island

外文摘要：The speciation contents of Cd and Pb were investigated with the modified BCR method on the intertidal sediments of Donghai Island, China. For 24 surface samples of eight sections, the order was residual>exchangeable>oxidable>reducible for Cd and residual>reducible>oxidable>exchangeable for Pb; the four-fraction summation and single fraction concentration of Cd and Pb all decreased gradually from west to east because of different TOC; from high tidal zones to low tidal zones, the four-fraction summation, the residual fraction and its percentage all increased gradually due to the influence of the decreasing particle size of surface sediments. No accordant changing rule was found for the vertical distribution of Cd and Pb. About 32.0% of Cd and 36.9% of Pb for the nonresistant fraction presented the evidence of anthropogenic enrichment. The Risk Assessment Code suggested that a low risk for Pb and a medium risk for Cd to the intertidal environment. (C) 2016 Elsevier B.V. All rights reserved.