HU Gong-ren1,2, YU Rui-lian1, LIN Yan-ping1, QI Hong-lu1
（1. Department of Environmental Science and Engineering, Huaqiao University, Xiamen 361021, China
2. Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China）

Abstract: Contents of heavy metals (Cu, Zn, Pb, Cd, Cr, As, Fe, Mn, Co, Ni and V) in dustfall collected from different zones of Quanzhou city were analyzed. The ecological risk of some heavy metals (Cu, Zn, Pb, Cd and Cr) was assessed by the Toxicity Characteristic Leaching Procedure (TCLP), which was developed by USEPA and commonly recommended to be used to evaluate the environmental risk of solid wastes. The available levels of Cu, Zn, Pb, Cd, Cr, As, Fe, Mn, Co, Ni and V from dustfall of Quanzhou city are 2.592－63.20, 0.084－2.978, 9.276－3141, 0.147－345.0, 0.628－9.696, 0.019－5.152, 5.037－248.9, 55.00－1261, 0.040－63.56, 0.735－37.43 and 0.020－24.07 mg/kg, respectively, based on TCLP method. According to the regulatory levels of heavy metals, most dustfall of Quanzhou city has been polluted by Cu, Zn, Pb, Cd and Cr, in which Zn and Pb were the most serious polluting elements, followed by Cu, Cd and Cr. The results of correlation analysis show that the TCLP-extraction contents of Fe, Mn, Ni, Cr and V are significantly influenced by pH values of dustfall samples. The TCLP-extraction contents of Pb, Cd, Mn, Co, Ni and As are correlated with not only their own total contents but also the total and TCLP-extraction contents of other elements in the dustfall. The results of principal component analysis show that traffic emission, oil burning dust, decoration material, surface soil dust, industrial dust, construction dust and coal burning dust are dominant sources for the dustfall in Quanzhou City with the total contribution of 86.01%.

Key words: dustfall; different functional zones of Quanzhou City; eco-environment risk assessment; TCLP method

E-mail: grhu@hqu.edu.cn

ACTA MINERALOGICA SINICA  Vol. 33, No. 1, 2013, Page 1-9