Spatial and temporal trends of polycyclic aromatic hydrocarbons in sediment cores of Brunei Bay, East Malaysia

Pang, Swee Yun and Suratman, Suhaimi and Tay, Joo Hui and Tan, Hock Seng and Mohd Tahir, Norhayati (2022) Spatial and temporal trends of polycyclic aromatic hydrocarbons in sediment cores of Brunei Bay, East Malaysia. Marine Pollution Bulletin, 179 (113670). pp. 1-7. ISSN 0025-326X. (Published)

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DOI/Official URL: https://doi.org/10.1016/j.marpolbul.2022.113670

Abstract

The spatial and temporal distribution of polycyclic aromatic hydrocarbons (PAHs) in three sediment cores from Brunei Bay, Southern South China Sea was investigated. The total concentrations of 16 priority PAHs (∑PAH16) and their alkyl-substituted derivatives ranged from 10.4 to 376 ng g−1 and 30.7 to 2263 ng g−1, respectively. PAH biomarker diagnostic ratios and principal component analysis (PCA) combined with absolute principal component score (APCS) and multiple linear regression (MLR) were performed to apportion the source contribution. The results revealed mixed inputs of fuel combustion residues and uncombusted petrogenic products. The downcore PAH profile revealed that the highest peaks could be related to past human activities using biofuel and coal during the industrialization/agriculture revolution period. The 1,7/(2,6+1,7)-dimethylphenanthrene ratio also highlighted wood combustion during forest fire outbreaks, which appeared to coincide with the past climate events.

Item Type:	Article
Additional Information:	Indexed by Scopus
Uncontrolled Keywords:	Diagnostic ratios; PAHs; PCA-APCS-MLR; Wood combustion
Subjects:	Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) T Technology > TP Chemical technology
Faculty/Division:	Faculty of Industrial Sciences And Technology
Depositing User:	Dr. Joo Hui Tay
Date Deposited:	19 Dec 2022 06:49
Last Modified:	19 Dec 2022 06:49
URI:	http://umpir.ump.edu.my/id/eprint/35915
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