Speciation of heavy metals by modified BCR sequential extraction procedure in different depths of sediments from Sungai Buloh, Selangor, Malaysia

Nemati, K. and Bakar, N.K.A. and Abas, M.R. and Sobhanzadeh, E. (2011) Speciation of heavy metals by modified BCR sequential extraction procedure in different depths of sediments from Sungai Buloh, Selangor, Malaysia. Journal of Hazardous Materials, 192 (1). pp. 402-410. ISSN 03043894, DOI https://doi.org/10.1016/j.jhazmat.2011.05.039.

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The sequential extraction procedure proposed by the European Standard, Measurements and Testing (SM&T) program, formerly the Community Bureau of Reference (BCR), was applied for partitioning of heavy metals (HMs) in river sediments collected along the course of Sungai Buloh and the Straits of Malacca in Selangor, Malaysia. Eight elements (V, Pb, Cd, Cr, Co, Ni, Cu and Zn) from seven stations (S1-S7) and at different depths were analyzed using the modified BCR Sequential Extraction Procedure (SEP) in combination with ICP-MS to obtain the metal distribution patterns in this region. The results showed that heavy metal contaminations at S2 and S3 was more severe than at other sampling sites, especially for Zn, Cu, Ni and Pb. Nevertheless, the element concentrations from top to bottom layers decreased predominantly. The samples from the Straits of Malacca (S4-S7) the highest contamination factors obtained were for Co, Zn and Pb while the lowest were found for V and Cr, similar to Sungai Buloh sediments. The sediments showed a low risk for V, Cr, Cu and Pb with RAC values of less than 10, but medium risk for Co, Zn (except S3), Cd at S1 and S2 and Ni at S1, S3 and S5. Zn at S3 and Cd at S3-S7 showed high risk to our sediment samples. There is not any element of very high risk conditions in the selected samples.

Item Type: Article
Uncontrolled Keywords: BCR sequential extraction Contamination factor (Cf) Heavy metal Risk assessment code (RAC) Sungai Buloh Bottom layers Community bureau of references Contamination factors Element concentrations European Standards Heavy metal contamination Malaysia Metal distributions River sediments Sampling site Sediment samples Sequential extraction procedure Anoxic sediments Cadmium Californium Chromium Lead Metals Positive ions Risk assessment River pollution Sedimentology Vanadium Zinc Copper cobalt nickel concentration (composition) extraction method fluvial deposit inductively coupled plasma method partitioning sampling sediment pollution speciation (chemistry) standard (regulation) strait article comparative effectiveness government regulation heavy metal removal mass spectrometry metal extraction river ecosystem sediment transport water contamination Geologic Sediments Metals, Heavy Selangor West Malaysia
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science > Department of Chemistry
Depositing User: miss munirah saadom
Date Deposited: 02 Jul 2013 01:43
Last Modified: 02 Jul 2013 01:43
URI: http://eprints.um.edu.my/id/eprint/6265

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