Alkhadher, Sadeq Abdullah Abdo and Suratman, Suhaimi and Zakaria, Mohamad Pauzi (2023) Lateral distribution, environmental occurrence, and assessment of organic pollutants in surface sediments of the East Malaysia. Environmental Monitoring and Assessment, 195 (6). ISSN 0167-6369, DOI https://doi.org/10.1007/s10661-023-11310-w.
Full text not available from this repository.Abstract
One of the molecular chemical markers used to identify anthropogenic inputs is linear alkylbenzenes (LABs) that cause serious impacts in the bays and coastal ecosystems. The surface sediments samples collected from the East Malaysia, including Brunei bay to estimate the LABs concentration and distribution as molecular markers of anthropogenic indicators. Gas chromatography-mass spectrometry (GC-MS) was used after purification, fractionation the hydrocarbons in the sediment samples to identify the sources of LABs. The analysis of variance (ANOVA) and Pearson correlation coefficient were applied to analyze the difference between sampling stations' significance at p < 0.05. Long to short chains L/S, homologs C-13/C-12, and internal to external (I/E) congeners have used to assess the LABs degradation rates as well as the effectiveness of sewage treatment. Results of this study showed that the LABs concentration ranged between 7.1 to 41.3 ng g(-1) dw, in the investigated stations. The majority of sample sites exhibited a considerable input of C-13-LABs homologs, and LABs homologs differed significantly. The estimated LABs ratios (I/E), which ranged between 0.6 and 2.2, demonstrated the effluents with primary and less secondary sources are released into the bay waters. The degradation of LABs were up to 42% in the interrogated locations. The conclusion is that the wastewater treatment system needs to be improved, and that LABs molecular markers are highly effective in tracing anthropogenic sewage contamination.
| Item Type: | Article |
|---|---|
| Funders: | University Malaysia Terengganu (UMT), University of Perak (UPM) [Grant No: 9412401] |
| Uncontrolled Keywords: | Sediment; I; E ratio; Sewage contamination; Bay; Degradation; Molecular markers |
| Subjects: | G Geography. Anthropology. Recreation > GE Environmental Sciences |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 08 Nov 2025 09:13 |
| Last Modified: | 08 Nov 2025 09:13 |
| URI: | http://eprints.um.edu.my/id/eprint/49764 |
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