Zhang Weiguo, Feng Huan, Chang Jinna, Qu Jianguo, Xie Hongxia, Yu Lizhong
State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 200062, China.
Environ Pollut. 2009 May;157(5):1533-43. doi: 10.1016/j.envpol.2009.01.007. Epub 2009 Feb 13.
Surface sediments (0-5 cm) from 59 stations within the Yangtze River intertidal zone (YRIZ) were sampled for metal contamination analysis in April and August 2005. The concentrations ranged (in mg kg(-1) dry weight): Al, 40,803-97,213; Fe, 20,538-49,627; Cd, 0.12-0.75; Cr, 36.9-173; Cu, 6.87-49.7; Mn, 413-1,112; Ni, 17.6-48.0; Pb, 18.3-44.1; and Zn, 47.6-154; respectively. Among the 59 sampling stations, enrichment factors (EF) indicate enrichment of Cd (52 stations), Cr (54 stations), Cu (5 stations), Ni (26 stations), Pb (5 stations) and Zn (5 stations). Geoaccumulation indexes (I(geo)) also suggest individual metal contamination in localized areas. This study indicates that Cd, Cr and Ni enrichment in the YRIZ sediment is widespread whereas Cu, Mn, Pb and Zn enrichment is localized or nonexistent. Factor and cluster analyses indicate that Cd is associated with total organic carbon whereas Cu, Cr, Ni, Pb and Zn have a close association with Mn.
2005年4月和8月，对长江潮间带（YRIZ）内59个站点的表层沉积物（0 - 5厘米）进行了采样，以分析金属污染情况。其浓度范围（以mg kg⁻¹干重计）分别为：铝，40,803 - 97,213；铁，20,538 - 49,627；镉，0.12 - 0.75；铬，36.9 - 173；铜，6.87 - 49.7；锰，413 - 1,112；镍，17.6 - 48.0；铅，18.3 - 44.1；锌，47.6 - 154。在59个采样站点中，富集因子（EF）表明镉（52个站点）、铬（54个站点）、铜（5个站点）、镍（26个站点）、铅（5个站点）和锌（5个站点）出现了富集情况。地累积指数（I(geo)）也表明局部地区存在个别金属污染。该研究表明，长江潮间带沉积物中镉、铬和镍的富集较为普遍，而铜、锰、铅和锌的富集则是局部性的或不存在。因子分析和聚类分析表明，镉与总有机碳有关，而铜、铬、镍、铅和锌与锰密切相关。
