Metals Fractionation and Evaluation of their Risk Connected with Urban and Industrial Influx in the Klang River Surface Sediments, Malaysia

In the present study, concentration, distribution and speciation of trace metals were conducted to assess the overall classification of Ni, Cu and Pb as well as their risk status in the surface sediments of Klang River. Sequential extraction technique (SET) was used to evaluate the four (exchangeabl...

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Main Authors: Abolfazl Naji, Ahmad Ismail
Format: Article
Language:English
Published: Thai Society of Higher Eduction Institutes on Environment 2012-01-01
Series:EnvironmentAsia
Subjects:
Online Access:http://www.tshe.org/ea/pdf/vol5%20no1%20p17-25.pdf
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author Abolfazl Naji
Ahmad Ismail
author_facet Abolfazl Naji
Ahmad Ismail
author_sort Abolfazl Naji
collection DOAJ
description In the present study, concentration, distribution and speciation of trace metals were conducted to assess the overall classification of Ni, Cu and Pb as well as their risk status in the surface sediments of Klang River. Sequential extraction technique (SET) was used to evaluate the four (exchangeable, acid-reducible, oxidisable-organic and residual) fractions of the surface sediments. The total concentrations of metals ranged from 5.26 µg/g d.w. to 22.93µg/g d.w for Ni; 9.47-66.74 µg/g d.w. for Cu; and 24.78-62.35 µg/g d.w. for Pb. The fractionation of studied metals (except Cu) in most stations were in the order of residual > acid-reducible > oxidisable-organic > exchangeable. The degree of surface sediments contamination was computed for Risk Assessment Code (RAC), Individual Contamination Factors (ICF) and Global contamination factor (GCF). The result of this study showed that none of the metals studied had potential risk to fauna and flora of the Klang River systems.
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spelling doaj.art-ee65246f14ef4758a486f7fe9bdcbd7b2022-12-22T03:01:38ZengThai Society of Higher Eduction Institutes on EnvironmentEnvironmentAsia1906-17142012-01-01511725Metals Fractionation and Evaluation of their Risk Connected with Urban and Industrial Influx in the Klang River Surface Sediments, MalaysiaAbolfazl NajiAhmad IsmailIn the present study, concentration, distribution and speciation of trace metals were conducted to assess the overall classification of Ni, Cu and Pb as well as their risk status in the surface sediments of Klang River. Sequential extraction technique (SET) was used to evaluate the four (exchangeable, acid-reducible, oxidisable-organic and residual) fractions of the surface sediments. The total concentrations of metals ranged from 5.26 µg/g d.w. to 22.93µg/g d.w for Ni; 9.47-66.74 µg/g d.w. for Cu; and 24.78-62.35 µg/g d.w. for Pb. The fractionation of studied metals (except Cu) in most stations were in the order of residual > acid-reducible > oxidisable-organic > exchangeable. The degree of surface sediments contamination was computed for Risk Assessment Code (RAC), Individual Contamination Factors (ICF) and Global contamination factor (GCF). The result of this study showed that none of the metals studied had potential risk to fauna and flora of the Klang River systems.http://www.tshe.org/ea/pdf/vol5%20no1%20p17-25.pdfheavy metalsfractionationsurface sedimentrisk assessment code
spellingShingle Abolfazl Naji
Ahmad Ismail
Metals Fractionation and Evaluation of their Risk Connected with Urban and Industrial Influx in the Klang River Surface Sediments, Malaysia
EnvironmentAsia
heavy metals
fractionation
surface sediment
risk assessment code
title Metals Fractionation and Evaluation of their Risk Connected with Urban and Industrial Influx in the Klang River Surface Sediments, Malaysia
title_full Metals Fractionation and Evaluation of their Risk Connected with Urban and Industrial Influx in the Klang River Surface Sediments, Malaysia
title_fullStr Metals Fractionation and Evaluation of their Risk Connected with Urban and Industrial Influx in the Klang River Surface Sediments, Malaysia
title_full_unstemmed Metals Fractionation and Evaluation of their Risk Connected with Urban and Industrial Influx in the Klang River Surface Sediments, Malaysia
title_short Metals Fractionation and Evaluation of their Risk Connected with Urban and Industrial Influx in the Klang River Surface Sediments, Malaysia
title_sort metals fractionation and evaluation of their risk connected with urban and industrial influx in the klang river surface sediments malaysia
topic heavy metals
fractionation
surface sediment
risk assessment code
url http://www.tshe.org/ea/pdf/vol5%20no1%20p17-25.pdf
work_keys_str_mv AT abolfazlnaji metalsfractionationandevaluationoftheirriskconnectedwithurbanandindustrialinfluxintheklangriversurfacesedimentsmalaysia
AT ahmadismail metalsfractionationandevaluationoftheirriskconnectedwithurbanandindustrialinfluxintheklangriversurfacesedimentsmalaysia