期刊
MARINE POLLUTION BULLETIN
卷 95, 期 1, 页码 419-426出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2015.03.035
关键词
Dissolved heavy metal; Spatial and seasonal variation; Sources; South China
资金
- National Basic Research Program of China (973 Program) [2015CB452905]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA11020205]
- National 908 Special Project of China [GD908-JC-06]
Heavy metal concentrations and physicochemical parameters in seawater were measured in Guangdong coastal waters, South China. Results showed that the concentrations and distribution of heavy metals varied spatially and seasonally. Generally, heavy metal concentrations in the east regions were higher than in the west. Concentrations of Pb, Zn, Cd and Cr in wet seasons were generally higher than in dry seasons owing to the seasonal differences of the river discharge, rainfall and seawater intrusion. Principal component (PC) analysis showed that PC1, PC2 and PD in the east were correlated to Pb + Cr + Zn + Cd, As + Cd and Cu, respectively, and they were correlated to Pb + Cr, Zn + Cu + Cd and As + Cu, respectively, in the west. That was maybe due to the differences of local heavy metal sources. The anthropogenic activities contributed more to the main sources of heavy metals, and contamination factors indicated that Zn and Pb pollution was serious in study area. (C) 2015 Elsevier Ltd. All rights reserved.
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