Comparison of heavy metals in marine sediments from coast areas in East and Southeast Asian countries during the years 2000—2010

Abstract

Comparisons of heavy metals (Cd, Cr, Cu, Ni, Pb, and Zn) in marine sediments from coast areas in Southeast and East Asian countries during the years 2000-2010 are studied and discussed in this paper. The results indicate that the average compositions of Cd ranged from 0.13 to 0.89 mg/kg, and the average compositions of Cr ranged from 0.09 to 96.0 mg/kg. Moreover, the average compositions of Cu ranged from 3.00 to 148 mg/kg, and the average compositions of Ni ranged from 1.00 to 37.4 mg/kg. In addition, the average compositions of Pb ranged from 1.00 to 111 mg/kg. Finally, the average compositions of Zn ranged from 4.00 to 595 mg/kg. From the point of view of metals distribution areas for this study, the average highest metal of Ni occurred in East Asia, while the highest metals of Cd, Cr, Cu, Pb, and Zn occurred in Southeast Asian countries.