ACCUMULATION AND POLLUTION TRENDS OF HEAVY METALS IN THE TOPSOIL FROM AN INDUSTRIAL PARK LOCATED IN A TYPICAL NEW CHINESE DEVELOPING AREA.

The levels of heavy metals in the Binhai New Area Dagang industrial park were investigated by analyzing 10 metals (Mn, As, Cu, Pb, Sr, Cr, Cd, Ni, Hg and Zn) in a series of ultraclean samples collected from 30 sites in the DaGang industrial park. Analysis of the pollution conditions and possible pollution causes and trends using comparative methods provides a basis for pollution control. The results showed that the mean concentrations of several heavy metals in the industrial areas were 473.5 (Mn), 38.1 (Pb), 93.4 (Sr), 25.5 (Cr), 17.2 (Ni), 8.3 (Hg), 10.7 (As), and 0.42(Cd) mg·kg^-1. Zinc and Cu are necessary nutritional elements; however, their mean concentrations were only 64.4 and 17.6 mg·kg^-1, respectively. The concentrations of Hg and Pb were higher than the values reported in a previous study of this area. The concentrations of As and Cd could not be detected in most territories. The soil properties, particularly the organic matter content, were found to be important factors in the distribution of the heavy metals. The heavy metal concentrations in the Dagang industrial park can provide data references for China to curb the environmental pollution of soil in the Binhai New Area. [ABSTRACT FROM AUTHOR]