Assessment of heavy metal pollution in surficial sediments from a tropical river-estuary-shelf system: A case study of Kelantan River, Malaysia

Wang, Ai-jun and Bong, Chui Wei and Xu, Yong-hang and Hassan, Meor Hakif Amir and Ye, Xiang and Bakar, Ahmad Farid Abu and Li, Yun-hai and Lai, Zhi-kun and Xu, Jiang and Loh, Kar Hoe (2017) Assessment of heavy metal pollution in surficial sediments from a tropical river-estuary-shelf system: A case study of Kelantan River, Malaysia. Marine Pollution Bulletin, 125 (1-2). pp. 492-500. ISSN 0025-326X

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Official URL: https://doi.org/10.1016/j.marpolbul.2017.08.010

Abstract

To understand the source-to-sink of pollutants in the Kelantan River estuary and the adjacent shelf area in Malaysia, a total of 42 surface sediment samples were collected in the Kelantan River-estuary-shelf system to analyze for grain size, total organic carbon (TOC) content, Al and heavy metals (Cr, Ni, Cu, Zn, Cd and Pb). The surficial sediments were mainly composed of clayey silt and the TOC content in sediments decreased from the river to the shelf. The surficial sediments experienced Pb pollution; Cr only showed a certain level of pollution in the coastal area of the estuary but not in other areas, and Ni, Cu, Zn, and Cd showed no pollution. The heavy metals mainly originated from natural weathering and erosion of rocks and soils in the catchment and enriched near the river mouth. Total organic carbon can promote the enrichment of heavy metals in sediments.

Item Type: Article
Uncontrolled Keywords: Heavy metal pollution; Grain size; Total organic carbon; Source-to-sink; Kelantan river-estuary-shelf system
Subjects: Q Science > Q Science (General)
Q Science > QH Natural history
Divisions: Faculty of Science > Institute of Biological Sciences
Deputy Vice Chancellor (Research & Innovation) Office > Institute of Ocean and Earth Sciences
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 24 Oct 2019 03:33
Last Modified: 24 Oct 2019 03:33
URI: http://eprints.um.edu.my/id/eprint/22828

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