Sorption of selected endocrine disrupting chemicals to different aquatic colloids

Zhou, JL; Liu, R; Wilding, A; Hibberd, A

Sorption of selected endocrine disrupting chemicals to different aquatic colloids

Zhou, JL

Liu, R Wilding, A Hibberd, A

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Publication Type:: Journal Article
Citation:: Environmental Science and Technology, 2007, 41 (1), pp. 206 - 213
Issue Date:: 2007-01-01

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Field	Value	Language
dc.contributor.author	Zhou, JL https://orcid.org/0000-0003-1393-1608	en_US
dc.contributor.author	Liu, R	en_US
dc.contributor.author	Wilding, A	en_US
dc.contributor.author	Hibberd, A	en_US
dc.date.issued	2007-01-01	en_US
dc.identifier.citation	Environmental Science and Technology, 2007, 41 (1), pp. 206 - 213	en_US
dc.identifier.issn	0013-936X	en_US
dc.identifier.uri	http://hdl.handle.net/10453/28392
dc.identifier.uri	http://hdl.handle.net/10453/33715
dc.description.abstract	The sorption of seven endocrine disrupting chemicals (EDCs) to aquatic colloids was determined by cross-flow ultrafiltration (CFUF) followed by gas chromatography-mass spectrometry (GC-MS). Results show that the colloidal organic carbon normalized sorption coefficient (Kcoc) of EDCs to different aquatic colloids varies by a factor of 6-12 because such colloids are of different origin. Through characterization of colloidal samples, a significant relationship was established between Kcoc values and the molar extinction coefficient of colloids at 280 nm, whereas no other colloidal properties such as elemental ratios were correlated with Kcoc values. The results are consistent with other reports of the importance of the quality of sorbents such as their aromatic carbon content in sorbing various organic pollutants. The presence of a surfactant was found to increase Kcoc values for estrone (E1) and 17α-ethynylestradiol (EE2). The method was subsequently applied for determining EDC concentrations in field samples, where both conventional and truly dissolved EDCs showed higher concentrations close to sewage outfalls than either upstream or downstream, confirming the source-concentration relationship. In addition, the truly dissolved EDC concentrations were lower than the conventional dissolved concentrations, confirming that there were interactions between aquatic colloids and EDCs. It is estimated that between 10 and 29% of EDCs are associated with aquatic colloids. As colloids are highly abundant in rivers and ocean, they will therefore play a significant role in the environmental behavior and fate of EDCs. © 2007 American Chemical Society.	en_US
dc.relation.ispartof	Environmental Science and Technology	en_US
dc.relation.isbasedon	10.1021/es0619298	en_US
dc.subject.classification	Environmental Sciences	en_US
dc.subject.mesh	Colloids	en_US
dc.subject.mesh	Surface-Active Agents	en_US
dc.subject.mesh	Ultrafiltration	en_US
dc.subject.mesh	Fresh Water	en_US
dc.subject.mesh	Environmental Monitoring	en_US
dc.subject.mesh	Adsorption	en_US
dc.subject.mesh	France	en_US
dc.subject.mesh	England	en_US
dc.subject.mesh	Endocrine Disruptors	en_US
dc.subject.mesh	Gas Chromatography-Mass Spectrometry	en_US
dc.title	Sorption of selected endocrine disrupting chemicals to different aquatic colloids	en_US
dc.type	Journal Article
utslib.citation.volume	1	en_US
utslib.citation.volume	41	en_US
utslib.for	0904 Chemical Engineering	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	1	en_US
pubs.publication-status	Published	en_US
pubs.volume	41	en_US

Abstract:

The sorption of seven endocrine disrupting chemicals (EDCs) to aquatic colloids was determined by cross-flow ultrafiltration (CFUF) followed by gas chromatography-mass spectrometry (GC-MS). Results show that the colloidal organic carbon normalized sorption coefficient (Kcoc) of EDCs to different aquatic colloids varies by a factor of 6-12 because such colloids are of different origin. Through characterization of colloidal samples, a significant relationship was established between Kcoc values and the molar extinction coefficient of colloids at 280 nm, whereas no other colloidal properties such as elemental ratios were correlated with Kcoc values. The results are consistent with other reports of the importance of the quality of sorbents such as their aromatic carbon content in sorbing various organic pollutants. The presence of a surfactant was found to increase Kcoc values for estrone (E1) and 17α-ethynylestradiol (EE2). The method was subsequently applied for determining EDC concentrations in field samples, where both conventional and truly dissolved EDCs showed higher concentrations close to sewage outfalls than either upstream or downstream, confirming the source-concentration relationship. In addition, the truly dissolved EDC concentrations were lower than the conventional dissolved concentrations, confirming that there were interactions between aquatic colloids and EDCs. It is estimated that between 10 and 29% of EDCs are associated with aquatic colloids. As colloids are highly abundant in rivers and ocean, they will therefore play a significant role in the environmental behavior and fate of EDCs. © 2007 American Chemical Society.

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