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

Zhang, Z; Dai, M; Hong, H; Zhou, JL; Yu, G

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

Zhang, Z Dai, M Hong, H Zhou, JL

Yu, G

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Publication Type:: Journal Article
Citation:: Journal of Environmental Monitoring, 2002, 4 (6), pp. 922 - 928
Issue Date:: 2002-12-01

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Field	Value	Language
dc.contributor.author	Zhang, Z	en_US
dc.contributor.author	Dai, M	en_US
dc.contributor.author	Hong, H	en_US
dc.contributor.author	Zhou, JL https://orcid.org/0000-0003-1393-1608	en_US
dc.contributor.author	Yu, G	en_US
dc.date.issued	2002-12-01	en_US
dc.identifier.citation	Journal of Environmental Monitoring, 2002, 4 (6), pp. 922 - 928	en_US
dc.identifier.issn	1464-0325	en_US
dc.identifier.uri	http://hdl.handle.net/10453/33814
dc.description.abstract	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 1-1 for OCl insecticides, 33.38-1064 ng 1-1 for PCB congeners, and 4.44-6356 ng 1-1 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 1-1 for OCl insecticides, 21.72-144 ng 1-1 for PCBs, and 1.27-122 ng 1-1 for OP insecticides, respectively. The predominance of β-HCH in HCHs, and DDE in DDTs in all water samples was clearly observed, suggesting β-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.	en_US
dc.relation.ispartof	Journal of Environmental Monitoring	en_US
dc.relation.isbasedon	10.1039/b206891p	en_US
dc.subject.classification	Environmental Sciences	en_US
dc.subject.mesh	Sodium Chloride	en_US
dc.subject.mesh	Water	en_US
dc.subject.mesh	Polychlorinated Biphenyls	en_US
dc.subject.mesh	Organophosphorus Compounds	en_US
dc.subject.mesh	Insecticides	en_US
dc.subject.mesh	Environmental Pollutants	en_US
dc.subject.mesh	Water Pollutants, Chemical	en_US
dc.subject.mesh	Environmental Monitoring	en_US
dc.subject.mesh	Solubility	en_US
dc.subject.mesh	China	en_US
dc.title	Dissolved insecticides and polychlorinated biphenyls in the Pearl River Estuary and South China Sea	en_US
dc.type	Journal Article
utslib.citation.volume	6	en_US
utslib.citation.volume	4	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	05 Environmental Sciences	en_US
utslib.for	11 Medical and Health Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	closed_access
pubs.issue	6	en_US
pubs.publication-status	Published	en_US
pubs.volume	4	en_US

Abstract:

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 1-1 for OCl insecticides, 33.38-1064 ng 1-1 for PCB congeners, and 4.44-6356 ng 1-1 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 1-1 for OCl insecticides, 21.72-144 ng 1-1 for PCBs, and 1.27-122 ng 1-1 for OP insecticides, respectively. The predominance of β-HCH in HCHs, and DDE in DDTs in all water samples was clearly observed, suggesting β-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.

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http://hdl.handle.net/10453/33814