TY - JOUR
T1 - Comprehensive assessment of toxic metals in urban and suburban street deposited sediments (SDSs) in the biggest metropolitan area of China
AU - Shi, G.
AU - Chen, Z.
AU - Bi, C.
AU - Li, Y.
AU - Teng, J.
AU - Wang, L.
AU - Xu, S.
PY - 2010/3
Y1 - 2010/3
N2 - A set of toxic metals, i.e. As, Hg, Pb, Cd, Cu, Zn, Ni and Cr, in urban and suburban SDSs were investigated comparatively in the biggest metropolitan area of China, Shanghai. Results showed that all of the metals except As were accumulated greatly, much higher than background values. Geo-accumulation index indicated that metal contamination in urban SDSs was generally heavier than that in suburban SDSs. Potential ecological risk index demonstrated that overall risks caused by metals were considerable. Cd contributed 52% to the overall risk. Multivariate statistical analysis revealed that in urban SDSs, Zn, Ni, Cd, Pb, Cu and Cr were related to traffic and industry; coal combustion led to elevated levels of Hg; soil parent materials controlled As contents. In suburban SDSs, Pb, Cu, As and Cd largely originated from traffic pollution; Zn, Ni and Cr were associated with industrial contaminants; Hg was mainly from domestic solid waste.
AB - A set of toxic metals, i.e. As, Hg, Pb, Cd, Cu, Zn, Ni and Cr, in urban and suburban SDSs were investigated comparatively in the biggest metropolitan area of China, Shanghai. Results showed that all of the metals except As were accumulated greatly, much higher than background values. Geo-accumulation index indicated that metal contamination in urban SDSs was generally heavier than that in suburban SDSs. Potential ecological risk index demonstrated that overall risks caused by metals were considerable. Cd contributed 52% to the overall risk. Multivariate statistical analysis revealed that in urban SDSs, Zn, Ni, Cd, Pb, Cu and Cr were related to traffic and industry; coal combustion led to elevated levels of Hg; soil parent materials controlled As contents. In suburban SDSs, Pb, Cu, As and Cd largely originated from traffic pollution; Zn, Ni and Cr were associated with industrial contaminants; Hg was mainly from domestic solid waste.
KW - Geo-accumulation index
KW - Multivariate statistical analysis
KW - Potential ecological risk index
KW - Street deposited sediments
KW - Toxic metal
UR - https://www.scopus.com/pages/publications/74149094940
U2 - 10.1016/j.envpol.2009.10.020
DO - 10.1016/j.envpol.2009.10.020
M3 - 文章
C2 - 19926184
AN - SCOPUS:74149094940
SN - 0269-7491
VL - 158
SP - 694
EP - 703
JO - Environmental Pollution
JF - Environmental Pollution
IS - 3
ER -
