Risk assessment and seasonal variation of heavy metals in settling particulate matter (SPM) from a typical southern Chinese mariculture base
文献类型: 外文期刊
作者: Gu, Yang-Guang 1 ; Jun Ouyang 1 ; An, Hong 1 ; Jiang, Shi-Jun 1 ; Tang, Hong-Qu 1 ;
作者机构: 1.Jinan Univ, Dept Ecol, Guangzhou 510632, Guangdong, Peoples R China
2.Jinan Univ, Inst Groundwater & Earth Sci, Guangzhou 510632, Guangdong, Peoples R China
3.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Guangdong, Peoples R China
关键词: Heavy metals;Mariculture;Seasonal variations;Risk assessment;Baisha Bay, South China
期刊名称:MARINE POLLUTION BULLETIN ( 影响因子:5.553; 五年影响因子:5.907 )
ISSN: 0025-326X
年卷期: 2017 年 123 卷 1-2 期
页码:
收录情况: SCI
摘要: Settling particulate matter (SPM) samples were collected monthly during a 21-month-long (April 2014 to December 2015) monitoring program from a fish cage and a large seaweed (Gracilaria lemaneiforrnis) cultivation in a typical mariculture base in eastern coast of Guangdong Province, South China. The concentrations of eight heavy metals (Pb, Cr, Ni, Cu, Zn, Co, V and Mn) showed a clear seasonality with relatively higher levels in the rainy season for most metals. In addition, five metals (Pb, Cr, Ni, Cu and Zn) showed slightly higher concentrations in the fish cage than in the large seaweed cultivation. A principal component analysis (PCA) further revealed that Ni, Cu and Zn were influenced by human activities, whereas the rest of the metals mainly by a combination of natural and anthropogenic factors. SPM in the two different mariculture areas had a 21% probability of toxicity based on the mean effects range-median quotient.
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