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Estimation and influence of physicochemical properties and chemical fractions of surface sediment on the bioaccessibility of Cd and Hg contaminant in Langat River, Malaysia

This study applied the use of sequential extraction technique and simple bioaccessibility extraction test to quantify the bioavailable fractions and the human bioaccessible concentration of metals collected from nine stations in surface sediment of the Langat River. The concentrations of total and b...

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Main Authors: Kadhum, Safaa A., Ishak, Mohd Yusoff, Zulkifli, Syaizwan Zahmir
Format: Article
Language:English
Published: Springer 2017
Online Access:http://psasir.upm.edu.my/id/eprint/54516/1/Estimation%20and%20influence%20of%20physicochemical%20properties%20and%20chemical%20fractions%20of%20surface%20sediment%20on%20the%20bioaccessibility%20.pdf
http://psasir.upm.edu.my/id/eprint/54516/
https://link.springer.com/article/10.1007%2Fs10653-016-9883-4#citeas
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spelling my.upm.eprints.545162020-03-06T01:16:46Z http://psasir.upm.edu.my/id/eprint/54516/ Estimation and influence of physicochemical properties and chemical fractions of surface sediment on the bioaccessibility of Cd and Hg contaminant in Langat River, Malaysia Kadhum, Safaa A. Ishak, Mohd Yusoff Zulkifli, Syaizwan Zahmir This study applied the use of sequential extraction technique and simple bioaccessibility extraction test to quantify the bioavailable fractions and the human bioaccessible concentration of metals collected from nine stations in surface sediment of the Langat River. The concentrations of total and bioaccessible metals from different stations were in the range of 0.49–1.04, 0.10–0.32 μg g−1 for T-Cd, Bio-Cd, respectively, and 12.9–128.03, 2.06–8.53 μg kg−1 for T-Hg, Bio-Hg, respectively. The results revealed highest R-Bio-Cd in Banting station (55.3 %), while the highest R-Bio-Hg was in Kajang station (49.61 %). The chemical speciation of Cd in most sampling stations was in the order of oxidisable-organic > residual > exchangeable > acid-reducible, while speciation of Hg was in the order of exchangeable > residual > oxidisable-organic > acid-reducible. The correlation matric of mean content showed that the TOM, particle size and Mg++ in polluted surface sediments was highly correlated with total mercury. The PCA showed that the main factors influencing the bioaccessibility of Hg in surface sediments were the sediment TOM, F1 (EFLE) and F3 (oxidation-organic), while the fact Springer 2017 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/54516/1/Estimation%20and%20influence%20of%20physicochemical%20properties%20and%20chemical%20fractions%20of%20surface%20sediment%20on%20the%20bioaccessibility%20.pdf Kadhum, Safaa A. and Ishak, Mohd Yusoff and Zulkifli, Syaizwan Zahmir (2017) Estimation and influence of physicochemical properties and chemical fractions of surface sediment on the bioaccessibility of Cd and Hg contaminant in Langat River, Malaysia. Environmental Geochemistry and Health, 39. pp. 1145-1158. ISSN 0269-4042; ESSN: 1573-2983 https://link.springer.com/article/10.1007%2Fs10653-016-9883-4#citeas 10.1007/s10653-016-9883-4
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description This study applied the use of sequential extraction technique and simple bioaccessibility extraction test to quantify the bioavailable fractions and the human bioaccessible concentration of metals collected from nine stations in surface sediment of the Langat River. The concentrations of total and bioaccessible metals from different stations were in the range of 0.49–1.04, 0.10–0.32 μg g−1 for T-Cd, Bio-Cd, respectively, and 12.9–128.03, 2.06–8.53 μg kg−1 for T-Hg, Bio-Hg, respectively. The results revealed highest R-Bio-Cd in Banting station (55.3 %), while the highest R-Bio-Hg was in Kajang station (49.61 %). The chemical speciation of Cd in most sampling stations was in the order of oxidisable-organic > residual > exchangeable > acid-reducible, while speciation of Hg was in the order of exchangeable > residual > oxidisable-organic > acid-reducible. The correlation matric of mean content showed that the TOM, particle size and Mg++ in polluted surface sediments was highly correlated with total mercury. The PCA showed that the main factors influencing the bioaccessibility of Hg in surface sediments were the sediment TOM, F1 (EFLE) and F3 (oxidation-organic), while the fact
format Article
author Kadhum, Safaa A.
Ishak, Mohd Yusoff
Zulkifli, Syaizwan Zahmir
spellingShingle Kadhum, Safaa A.
Ishak, Mohd Yusoff
Zulkifli, Syaizwan Zahmir
Estimation and influence of physicochemical properties and chemical fractions of surface sediment on the bioaccessibility of Cd and Hg contaminant in Langat River, Malaysia
author_facet Kadhum, Safaa A.
Ishak, Mohd Yusoff
Zulkifli, Syaizwan Zahmir
author_sort Kadhum, Safaa A.
title Estimation and influence of physicochemical properties and chemical fractions of surface sediment on the bioaccessibility of Cd and Hg contaminant in Langat River, Malaysia
title_short Estimation and influence of physicochemical properties and chemical fractions of surface sediment on the bioaccessibility of Cd and Hg contaminant in Langat River, Malaysia
title_full Estimation and influence of physicochemical properties and chemical fractions of surface sediment on the bioaccessibility of Cd and Hg contaminant in Langat River, Malaysia
title_fullStr Estimation and influence of physicochemical properties and chemical fractions of surface sediment on the bioaccessibility of Cd and Hg contaminant in Langat River, Malaysia
title_full_unstemmed Estimation and influence of physicochemical properties and chemical fractions of surface sediment on the bioaccessibility of Cd and Hg contaminant in Langat River, Malaysia
title_sort estimation and influence of physicochemical properties and chemical fractions of surface sediment on the bioaccessibility of cd and hg contaminant in langat river, malaysia
publisher Springer
publishDate 2017
url http://psasir.upm.edu.my/id/eprint/54516/1/Estimation%20and%20influence%20of%20physicochemical%20properties%20and%20chemical%20fractions%20of%20surface%20sediment%20on%20the%20bioaccessibility%20.pdf
http://psasir.upm.edu.my/id/eprint/54516/
https://link.springer.com/article/10.1007%2Fs10653-016-9883-4#citeas
_version_ 1662756451989323776
score 13.211869

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