Multivariate statistical and GIS-based approach to identify source of anthropogenic impacts on metallic elements in sediments from the mid Guangdong coasts, China
Multivariate statistical and GIS-based approach to identify source of anthropogenic impacts on metallic elements in sediments from the mid Guangdong coasts, China
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DOI：
10.1016/j.envpol.2011.12.041
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发表时间：
2012-04-01
影响因子：
8.9
通讯作者：
Shu, Yong-Hong
中科院分区：
文献类型：
--
作者：
Gu, Yang-Guang;Wang, Zhao-Hui;Shu, Yong-Hong
广东中部沿海地区是中国经济发展最快的地区之一，人们对该地区的关注日益增加。为了研究经济和工业发展对环境的影响，我们测定了三个海湾19个站位表层沉积物中的10种金属元素（Hg、Pb、Cu、Zn、Fe、Al、Ni、Sr、Li和Co）。所有这些金属的浓度都大大高于其背景值，表明可能存在人为污染。最高的金属含量接近核电站，可能是核废料排放的结果。结果表明，Hg、Pb、Sr主要来源于人类活动，Cu、Ni、Co、Al、Fe主要来源于自然岩石风化。通过主成分分析确定了两种类型的人为源，一种来自航运业，港口运输服务和核电厂，另一种来自城市污水和燃煤电厂。(C)2012爱思唯尔有限公司保留所有权利。
Growing concerns surround the mid Guangdong coasts, one of China's fastest and developing economical regions. To study the environmental impacts of economic and industrial development, we measured ten metallic elements (Hg, Pb, Cu, Zn, Fe, Al, Ni, Sr, Li, and Co) in surface sediments from nineteen stations in three bays. All these metals showed concentrations substantially higher than their background values, suggesting possible anthropogenic pollution. Highest metal levels were close to the nuclear power plants likely as a result of nuclear waste discharges. Results revealed that Hg, Pb, and Sr largely originated from human activities, while Cu, Ni, Co, Al, and Fe mainly from natural rock weathering. Two types of anthropogenic sources were identified through a principal component analysis, one from shipping industry, port transport service and nuclear power plants, and the other from municipal sewage and coal power plant. (C) 2012 Elsevier Ltd. All rights reserved.