Trace metal behaviour in the Conwy estuary, North Wales

Zhou, JL; Liu, YP; Abrahams, PW

Trace metal behaviour in the Conwy estuary, North Wales

Zhou, JL

Liu, YP Abrahams, PW

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Publication Type:: Journal Article
Citation:: Chemosphere, 2003, 51 (5), pp. 429 - 440
Issue Date:: 2003-01-01

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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, YP	en_US
dc.contributor.author	Abrahams, PW	en_US
dc.date.issued	2003-01-01	en_US
dc.identifier.citation	Chemosphere, 2003, 51 (5), pp. 429 - 440	en_US
dc.identifier.issn	0045-6535	en_US
dc.identifier.uri	http://hdl.handle.net/10453/33736
dc.description.abstract	The distribution of trace metals Zn, Ni, Mn, Fe, Cu, Pb, Cd and Cr between suspended particulate matter (SPM) and water in the Conwy estuary, North Wales, has been studied in three surveys in 1998. Dissolved Cu and Mn showed some monthly variations. Most of the dissolved trace metals displayed a negative association with salinity, indicating rivers as a major source of inputs for them. Particulate Zn, Mn and Fe showed a decreasing concentration seaward, whilst the levels of Ni, Cu, Cr and Pb increased with salinity. SPM concentration was the most important variable significantly related to trace metal concentrations in SPM, with an inverse relationship between the two parameters. This was explained by the relative enrichment of trace metals in fine particles at low SPM concentrations and relative depletion of trace metals in coarse particles at high SPM concentrations. Particulate Zn, Mn and Pb were dominated by the fraction available to acetic acid (non-detrital), whilst particulate Ni, Fe and Cr were dominated by the fraction available to nitric acid (detrital). The partition coefficient of trace metals between SPM and water declined with increasing SPM concentration, consistent with the so-called "particle concentration effect". Such a phenomenon may be explained by the presence of fine particles (including colloids) enriched with trace metals at low SPM concentrations, and the salinity-induced desorption. © 2002 Elsevier Science Ltd. All rights reserved.	en_US
dc.relation.ispartof	Chemosphere	en_US
dc.relation.isbasedon	10.1016/S0045-6535(02)00853-6	en_US
dc.subject.classification	Meteorology & Atmospheric Sciences	en_US
dc.subject.classification	Environmental Sciences	en_US
dc.subject.mesh	Sodium Chloride	en_US
dc.subject.mesh	Metals	en_US
dc.subject.mesh	Chlorophyll	en_US
dc.subject.mesh	Water Pollutants, Chemical	en_US
dc.subject.mesh	Ecosystem	en_US
dc.subject.mesh	Temperature	en_US
dc.subject.mesh	Seasons	en_US
dc.subject.mesh	Seawater	en_US
dc.subject.mesh	Environmental Monitoring	en_US
dc.subject.mesh	Adsorption	en_US
dc.subject.mesh	Hydrogen-Ion Concentration	en_US
dc.subject.mesh	Particle Size	en_US
dc.subject.mesh	Solubility	en_US
dc.subject.mesh	Geologic Sediments	en_US
dc.subject.mesh	Wales	en_US
dc.subject.mesh	Chlorophyll A	en_US
dc.title	Trace metal behaviour in the Conwy estuary, North Wales	en_US
dc.type	Journal Article
utslib.citation.volume	5	en_US
utslib.citation.volume	51	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	5	en_US
pubs.publication-status	Published	en_US
pubs.volume	51	en_US

Abstract:

The distribution of trace metals Zn, Ni, Mn, Fe, Cu, Pb, Cd and Cr between suspended particulate matter (SPM) and water in the Conwy estuary, North Wales, has been studied in three surveys in 1998. Dissolved Cu and Mn showed some monthly variations. Most of the dissolved trace metals displayed a negative association with salinity, indicating rivers as a major source of inputs for them. Particulate Zn, Mn and Fe showed a decreasing concentration seaward, whilst the levels of Ni, Cu, Cr and Pb increased with salinity. SPM concentration was the most important variable significantly related to trace metal concentrations in SPM, with an inverse relationship between the two parameters. This was explained by the relative enrichment of trace metals in fine particles at low SPM concentrations and relative depletion of trace metals in coarse particles at high SPM concentrations. Particulate Zn, Mn and Pb were dominated by the fraction available to acetic acid (non-detrital), whilst particulate Ni, Fe and Cr were dominated by the fraction available to nitric acid (detrital). The partition coefficient of trace metals between SPM and water declined with increasing SPM concentration, consistent with the so-called "particle concentration effect". Such a phenomenon may be explained by the presence of fine particles (including colloids) enriched with trace metals at low SPM concentrations, and the salinity-induced desorption. © 2002 Elsevier Science Ltd. All rights reserved.

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http://hdl.handle.net/10453/33736