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Assessment of Heavy Metals in Water, Sediment, and Fishes of a Large Tropical Hydroelectric Dam in Sarawak, Malaysia

Bakun Hydroelectric Dam in Sarawak is one of the world highest concrete rock filled dams.This paper reports the heavy metals concentrations in water, sediment, and fishes of Bakun Dam.Water and sediment samples were collected from11 stations and 6 fish species were caught. The samples were digeste...

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Main Authors: Siong, Fong Sim, Teck, Yee Ling, Lee, Nyanti, Norliza, Gerunsin, Yiew, Ee Wong, Liang, Ping Kho
Format: E-Article
Language:English
Published: Hindawi Publishing Corporation 2016
Subjects:
GE Environmental Sciences
Online Access:http://ir.unimas.my/id/eprint/11377/1/Assessment%20of%20Heavy%20Metals%20in%20Water%2C%20Sediment%20%28abstract%29.pdf
http://ir.unimas.my/id/eprint/11377/
https://www.scopus.com/record/display.uri?eid=2-s2.0-84960968439&origin=inward&txGid=0
http://dx.doi.org/10.1155/2016/8923183
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spelling my.unimas.ir.113772016-10-21T01:18:02Z http://ir.unimas.my/id/eprint/11377/ Assessment of Heavy Metals in Water, Sediment, and Fishes of a Large Tropical Hydroelectric Dam in Sarawak, Malaysia Siong, Fong Sim Teck, Yee Ling Lee, Nyanti Norliza, Gerunsin Yiew, Ee Wong Liang, Ping Kho GE Environmental Sciences Bakun Hydroelectric Dam in Sarawak is one of the world highest concrete rock filled dams.This paper reports the heavy metals concentrations in water, sediment, and fishes of Bakun Dam.Water and sediment samples were collected from11 stations and 6 fish species were caught. The samples were digested with open acid digestion and the metals contents were analysed using an atomic absorption spectrophotometer and mercury analyser. The method was validated based on certified reference materials. A higher concentration of Fe andMn was detected in downstreamwater with significant longitudinal variation. Cu, Zn, andHg were present in trace amount. All elements analysed were consistently found in sediment with no risk of contamination. For fish, Hemibagrus planiceps was characterised by higher affinity for Hg accumulation. The concentrations detected in all fish species were within the permissible guideline of 0.5mg/kg. The health risk assessment suggested that Barbonymus schwanenfeldii, Puntioplites waandersii, Cyclocheilichthys apogon, and Hemibagrus planiceps were characterised by hazard index > 1 implying possible adverse effects.The amount of fish recommended for adults and children was in the range of 500–775 g/week and 33–135 g/week, respectively. Hindawi Publishing Corporation 2016 E-Article PeerReviewed text en http://ir.unimas.my/id/eprint/11377/1/Assessment%20of%20Heavy%20Metals%20in%20Water%2C%20Sediment%20%28abstract%29.pdf Siong, Fong Sim and Teck, Yee Ling and Lee, Nyanti and Norliza, Gerunsin and Yiew, Ee Wong and Liang, Ping Kho (2016) Assessment of Heavy Metals in Water, Sediment, and Fishes of a Large Tropical Hydroelectric Dam in Sarawak, Malaysia. Journal of Chemistry, 2016. ISSN 2090-9071 https://www.scopus.com/record/display.uri?eid=2-s2.0-84960968439&origin=inward&txGid=0 http://dx.doi.org/10.1155/2016/8923183
institution Universiti Malaysia Sarawak
building Centre for Academic Information Services (CAIS)
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Sarawak
content_source UNIMAS Institutional Repository
url_provider http://ir.unimas.my/
language English
topic GE Environmental Sciences
spellingShingle GE Environmental Sciences
Siong, Fong Sim
Teck, Yee Ling
Lee, Nyanti
Norliza, Gerunsin
Yiew, Ee Wong
Liang, Ping Kho
Assessment of Heavy Metals in Water, Sediment, and Fishes of a Large Tropical Hydroelectric Dam in Sarawak, Malaysia
description Bakun Hydroelectric Dam in Sarawak is one of the world highest concrete rock filled dams.This paper reports the heavy metals concentrations in water, sediment, and fishes of Bakun Dam.Water and sediment samples were collected from11 stations and 6 fish species were caught. The samples were digested with open acid digestion and the metals contents were analysed using an atomic absorption spectrophotometer and mercury analyser. The method was validated based on certified reference materials. A higher concentration of Fe andMn was detected in downstreamwater with significant longitudinal variation. Cu, Zn, andHg were present in trace amount. All elements analysed were consistently found in sediment with no risk of contamination. For fish, Hemibagrus planiceps was characterised by higher affinity for Hg accumulation. The concentrations detected in all fish species were within the permissible guideline of 0.5mg/kg. The health risk assessment suggested that Barbonymus schwanenfeldii, Puntioplites waandersii, Cyclocheilichthys apogon, and Hemibagrus planiceps were characterised by hazard index > 1 implying possible adverse effects.The amount of fish recommended for adults and children was in the range of 500–775 g/week and 33–135 g/week, respectively.
format E-Article
author Siong, Fong Sim
Teck, Yee Ling
Lee, Nyanti
Norliza, Gerunsin
Yiew, Ee Wong
Liang, Ping Kho
author_facet Siong, Fong Sim
Teck, Yee Ling
Lee, Nyanti
Norliza, Gerunsin
Yiew, Ee Wong
Liang, Ping Kho
author_sort Siong, Fong Sim
title Assessment of Heavy Metals in Water, Sediment, and Fishes of a Large Tropical Hydroelectric Dam in Sarawak, Malaysia
title_short Assessment of Heavy Metals in Water, Sediment, and Fishes of a Large Tropical Hydroelectric Dam in Sarawak, Malaysia
title_full Assessment of Heavy Metals in Water, Sediment, and Fishes of a Large Tropical Hydroelectric Dam in Sarawak, Malaysia
title_fullStr Assessment of Heavy Metals in Water, Sediment, and Fishes of a Large Tropical Hydroelectric Dam in Sarawak, Malaysia
title_full_unstemmed Assessment of Heavy Metals in Water, Sediment, and Fishes of a Large Tropical Hydroelectric Dam in Sarawak, Malaysia
title_sort assessment of heavy metals in water, sediment, and fishes of a large tropical hydroelectric dam in sarawak, malaysia
publisher Hindawi Publishing Corporation
publishDate 2016
url http://ir.unimas.my/id/eprint/11377/1/Assessment%20of%20Heavy%20Metals%20in%20Water%2C%20Sediment%20%28abstract%29.pdf
http://ir.unimas.my/id/eprint/11377/
https://www.scopus.com/record/display.uri?eid=2-s2.0-84960968439&origin=inward&txGid=0
http://dx.doi.org/10.1155/2016/8923183
_version_ 1644511199625216000
score 13.211869

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