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《Journal of Zhanjiang Ocean University》 2006-03
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Distribution Features and Evaluation on Potential Ecological Risk of Heavy Metals in Submarine Surface Sediments of Zhanjiang Bay

ZHANG Cai-xue,SUN Xing-li,CHEN Chun-liang(Monitoring Center of Ocean Resources and Environment,Guangdong Ocean University,Zhanjiang 524088,China)  
By using the Atomic Fluorescence Spectrometry(AFS) to analyse As,Hg,Pb,Cd in submarine surface sediments of Zhanjiang Bay,the article expounded distribution features of these heavy metals and the mass fraction and its mean value of As were(8.132-16.749)×10~(-6)and 12.745×10~(6) respectively;Hg were undetection-0.322×10~(-6) and 0.059×10~(-6);Pb were(14.306-68.903)×10~(-6) and 44.258×10~(-6);Cd were(1.561-6.882)×10~(-6)and 3.087×10~(-6).As,Hg,Pb,and Cd would reduce by degrees from inside to outside of the harbor,and distribution of Cd had no regulation,it was well-distributed in all the harbor.From the index number techniques of single factor,As,Hg and Pb were low in the sediments;Cd pollution was powerful serious and it was ecological risk;from the index number techniques of synthesis,the average was moderate ecological risk.
【CateGory Index】: X55
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