Dissolved insecticides and polychlorinated biphenyls in the Pearl River Estuary and South China Sea

CORC > 厦门大学 > 海洋环境－已发表论文

	Dissolved insecticides and polychlorinated biphenyls in the Pearl River Estuary and South China Sea
	Zhang, Z ; Dai, M ; Hong, H ; Zhou, JL ; Yu, G ; Dai MH(戴民汉) ; Hong HS(洪华生)
刊名	http://dx.doi.org/10.1039/b206891p
	2002-12
关键词	PERSISTENT ORGANOCHLORINE RESIDUES AROMATIC-HYDROCARBONS SURFACE SEDIMENTS WATER PESTICIDES CONTAMINATION CONGENERS POLLUTANTS POLLUTION REGION
英文摘要	Persistent organic pollutants (POPs) such as organochlorine (OCl) insecticides and polychlorinated biphenyls (PCB), together with the new generation of organophosphorus (OP) insecticides, are of global concern, due to their widespread occurrence, persistence, bioaccumulation and hormone disruption potential. This paper represents an attempt to study the source and transportation of such pollutants in estuarine and coastal environments as an integrated ecosystem, by determining the levels of 18 OCl insecticides, 21 PCB congeners, and 17 OP insecticides in the Pearl River Estuary and South China Sea. The total concentrations varied from 126-1198 ng l(-1) for OCl insecticides, 33.38-1064 ng l(-1) for PCB congeners, and 4.44-6356 ng l(-1) for OP insecticides in the Pearl River Estuary. In comparison, their levels in the South China Sea were significantly lower, varying from 57.09-202 ng l(-1) for OCl insecticides, 21.72-144 ng l(-1) for PCBs, and 1.27-122 ng l(-1) for OP insecticides, respectively. The predominance of beta-HCH in HCHs, and DDE in DDTs in all water samples was clearly observed, suggesting beta-HCH and DDE's resistance to further degradation. The PCBs were dominated by those with 3-6 chlorines. The distribution characteristic of OP insecticides shows that five compounds (methamidophos, dimethoate, malathion, dichlorvos and omethoate) accounted for 56% and 72% of the total OP insecticide concentration. The relationship between pollutant concentrations and salinity in the estuary showed that they were all removed during the mixing process, therefore behaving non-conservatively.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/60246]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Zhang, Z,Dai, M,Hong, H,et al. Dissolved insecticides and polychlorinated biphenyls in the Pearl River Estuary and South China Sea[J]. http://dx.doi.org/10.1039/b206891p,2002.
APA	Zhang, Z.,Dai, M.,Hong, H.,Zhou, JL.,Yu, G.,...&洪华生.(2002).Dissolved insecticides and polychlorinated biphenyls in the Pearl River Estuary and South China Sea.http://dx.doi.org/10.1039/b206891p.
MLA	Zhang, Z,et al."Dissolved insecticides and polychlorinated biphenyls in the Pearl River Estuary and South China Sea".http://dx.doi.org/10.1039/b206891p (2002).