Assessment of water quality of Batang Rajang at Pelagus Area, Sarawak, Malaysia

This study was carried out to examine the water quality of Batang Rajang at Pelagus area, Sarawak, Malaysia. Water quality was determined at 12 stations along Batang Rajang and its tributaries in terms of in-situ and ex-situ water quality parameters. The results showed that most stations at main riv...

Full description

Bibliographic Details
Main Authors:	Ling, Teck-Yee, Soo, Chen-Lin, Phan, Tze-Pei, Lee, Nyanti, Sim, Siong-Fong, Jongkar Grinang
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2017
Online Access:	http://journalarticle.ukm.my/10710/ http://journalarticle.ukm.my/10710/ http://journalarticle.ukm.my/10710/1/07%20Teck-Yee%20Ling.pdf

id	ukm-10710
recordtype	eprints
spelling	ukm-107102017-10-07T16:02:37Z http://journalarticle.ukm.my/10710/ Assessment of water quality of Batang Rajang at Pelagus Area, Sarawak, Malaysia Ling, Teck-Yee Soo, Chen-Lin Phan, Tze-Pei Lee, Nyanti Sim, Siong-Fong Jongkar Grinang, This study was carried out to examine the water quality of Batang Rajang at Pelagus area, Sarawak, Malaysia. Water quality was determined at 12 stations along Batang Rajang and its tributaries in terms of in-situ and ex-situ water quality parameters. The results showed that most stations at main river were categorized as slightly polluted while most tributaries were clean according to the Water Quality Index. The river is suffering from organic pollution where almost all stations along the river contained high chemical oxygen demand (≈ 43.1 mg/L) and total ammonia nitrogen (≈ 0.520 mg/L) and were classified as Class III and IV at most of the stations. High suspended solids (218.3 mg/L) and low dissolved oxygen (4.6 mg/L) were observed at the main river. The low dissolved oxygen content from the Bakun dam upstream of the study area has an impact on the river particularly during dry season where DO dropped below the minimum required for sensitive aquatic organisms. As seven tributaries are within Class II indicating healthy freshwater ecosystems, they should be conserved as habitats for sensitive aquatic organisms. Conversely, proper management need to be initiated in particular, Sungai Merit tributary and the main river where DO were below the minimum required for sensitive aquatic organisms. Penerbit Universiti Kebangsaan Malaysia 2017-03 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/10710/1/07%20Teck-Yee%20Ling.pdf Ling, Teck-Yee and Soo, Chen-Lin and Phan, Tze-Pei and Lee, Nyanti and Sim, Siong-Fong and Jongkar Grinang, (2017) Assessment of water quality of Batang Rajang at Pelagus Area, Sarawak, Malaysia. Sains Malaysiana, 46 (3). pp. 401-411. ISSN 0126-6039 http://www.ukm.my/jsm/english_journals/vol46num3_2017/contentsVol46num3_2017.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	This study was carried out to examine the water quality of Batang Rajang at Pelagus area, Sarawak, Malaysia. Water quality was determined at 12 stations along Batang Rajang and its tributaries in terms of in-situ and ex-situ water quality parameters. The results showed that most stations at main river were categorized as slightly polluted while most tributaries were clean according to the Water Quality Index. The river is suffering from organic pollution where almost all stations along the river contained high chemical oxygen demand (≈ 43.1 mg/L) and total ammonia nitrogen (≈ 0.520 mg/L) and were classified as Class III and IV at most of the stations. High suspended solids (218.3 mg/L) and low dissolved oxygen (4.6 mg/L) were observed at the main river. The low dissolved oxygen content from the Bakun dam upstream of the study area has an impact on the river particularly during dry season where DO dropped below the minimum required for sensitive aquatic organisms. As seven tributaries are within Class II indicating healthy freshwater ecosystems, they should be conserved as habitats for sensitive aquatic organisms. Conversely, proper management need to be initiated in particular, Sungai Merit tributary and the main river where DO were below the minimum required for sensitive aquatic organisms.
format	Article
author	Ling, Teck-Yee Soo, Chen-Lin Phan, Tze-Pei Lee, Nyanti Sim, Siong-Fong Jongkar Grinang,
spellingShingle	Ling, Teck-Yee Soo, Chen-Lin Phan, Tze-Pei Lee, Nyanti Sim, Siong-Fong Jongkar Grinang, Assessment of water quality of Batang Rajang at Pelagus Area, Sarawak, Malaysia
author_facet	Ling, Teck-Yee Soo, Chen-Lin Phan, Tze-Pei Lee, Nyanti Sim, Siong-Fong Jongkar Grinang,
author_sort	Ling, Teck-Yee
title	Assessment of water quality of Batang Rajang at Pelagus Area, Sarawak, Malaysia
title_short	Assessment of water quality of Batang Rajang at Pelagus Area, Sarawak, Malaysia
title_full	Assessment of water quality of Batang Rajang at Pelagus Area, Sarawak, Malaysia
title_fullStr	Assessment of water quality of Batang Rajang at Pelagus Area, Sarawak, Malaysia
title_full_unstemmed	Assessment of water quality of Batang Rajang at Pelagus Area, Sarawak, Malaysia
title_sort	assessment of water quality of batang rajang at pelagus area, sarawak, malaysia
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2017
url	http://journalarticle.ukm.my/10710/ http://journalarticle.ukm.my/10710/ http://journalarticle.ukm.my/10710/1/07%20Teck-Yee%20Ling.pdf
first_indexed	2023-09-18T19:58:15Z
last_indexed	2023-09-18T19:58:15Z
_version_	1777406675102203904

Assessment of water quality of Batang Rajang at Pelagus Area, Sarawak, Malaysia

Similar Items