Seasonal variations in the distribution of aliphatic hydrocarbons in surface sediments from the Selangor River, Peninsular Malaysia's West Coast
Environmental Geochemistry and Health(2024)
Abstract
The seasonal variation of petroleum pollution including n -alkanes in surface sediments of the Selangor River in Malaysia during all four climatic seasons was investigated using GC–MS. The concentrations of n -alkanes in the sediment samples did not significantly correlate with TOC ( r = 0.34, p > 0.05). The concentrations of the 29 n -alkanes in the Selangor River ranged from 967 to 3711 µg g -1 dw, with higher concentrations detected during the dry season. The overall mean per cent of grain-sized particles in the Selangor River was 85.9 ± 2.85% sand, 13.5 ± 2.8% clay, and 0.59 ± 0.34% gravel, respectively. n -alkanes are derived from a variety of sources, including fresh oil, terrestrial plants, and heavy/degraded oil in estuaries. The results of this study highlight concerns and serve as a warning that hydrocarbon contamination is affecting human health. As a result, constant monitoring and assessment of aliphatic hydrocarbons in coastal and riverine environments are needed.
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Key words
n-alkane,Sediments,Selangor River,Degradation,Pollution
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