Spatial and temporal variations of silica in a disturbed tropical river basin

Nather Khan Ibrahim, and Firuza Begham Mustafa, (2010) Spatial and temporal variations of silica in a disturbed tropical river basin. Sains Malaysiana, 39 (2). pp. 189-198. ISSN 0126-6039

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Official URL: http://www.ukm.my/jsm/english_journals/vol39num2_2...

Abstract

Spatial and temporal variations in silica concentration were determined at various rivers and tributaries in the Linggi River Basin, which has been highly polluted due to urban, industrial and agricultural wastes. The silica content measured as reactive silicate in the whole Linggi River Basin ranged from 1.4 to 26.3 mg/L. A clear seasonal variation in silica was noted especially in the major rivers with higher concentration during dry months and lower concentration during the wet months. The concentration was found to decrease as the water flooded downstream. The large drainage area with granite dominated lithology and high denudation especially in the upper catchment is attributed for high silica content in the water of Linggi River Basin.

Item Type:Article
Keywords:Diatoms; Linggi River; silica; tropical river; water quality
Journal:Sains Malaysiana
ID Code:7319
Deposited By: Mr Fazli Nafiah -
Deposited On:22 Jul 2014 05:33
Last Modified:14 Dec 2016 06:43

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