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Abstract Vertical distribution, pollution history and source of 14heavy metals (Sc, V, Cr, Co, Ni, Cu, Zn, Sr, Cd, Sb, Tl, Pb, Fe and Hg) in the core sediments collected from intertidal zone of Xiamen Western Bay were analyzed. The contents of above elements varied smoothly before 1795. During 1795~1849, the contents of Sc, Cr, Co, Ni, Cu, Sr, Cd, Tl, Pb and Hg increased significantly. The contents of Sc, Cr, Co, Sr, Tl, Pb and Hg fluctuated slightly during 2001~2011. The results of multivariate statistical analysis indicated that traffic pollution and industrial activities, natural sources, industrial and domestic sewage were the three major sources, with their contributions of 72.87%, 12.20% and 10.99%, respectively. Lead isotope analysis of core sediments demonstrated that, from bottom to surface, the evolvement trend of Pb isotopic composition was from industrial activities and sewage to automobile emission. Traffic and industrial activities, industrial and domestic sewage were the major sources of lead pollution in Xiamen Western Bay.
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Received: 19 August 2013
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CHEN Huan-Yu, LIU Jing-Qing, WEI Zong-Yuan, ZHANG Hui-Hui, HE Xiao-Fang, ZHOU Xiao-Yan, QIU Shang-De, HU Bao-Lan, LOU Li-Ping. Radial differences in contaminant distribution in large-diameter pipe scales of main pipelines in drinking water distribution system[J]. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(9): 2706-2712. |
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