Environmental forensic techniques in identifying the sources of 16 USEPA priority pollutants Polycyclic Aromatic Hydrocarbons (PAHs) at the Langat River, Selangor, Malaysia

Tahir, Nurul Afiqah Mohamd and Juahir, Hafizan and Zakaria, Mohamad Pauzi and Retnam, Ananthy and Sing, Tan Sin and Manan, Ninie Suhana Abdul and Toriman, Mohd Ekhwan and Ismail, Azimah and Kamarudin, Mohd Khairul Amri and Ghazali, Adiana and Wahab, Noor Abd (2018) Environmental forensic techniques in identifying the sources of 16 USEPA priority pollutants Polycyclic Aromatic Hydrocarbons (PAHs) at the Langat River, Selangor, Malaysia. International Journal of Engineering & Technology, 7 (3.14). pp. 123-131. ISSN 2227-524X

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Abstract

Twenty-two surface sediment samples were collected from the Langat River, Selangor, Malaysia in January 2010. The concentration of 16 USEPA priority PAHs were determined and quantified by gas chromatography coupled with mass spectrometry detector (GC-MS). The 16 PAHs concentration ranged from 37.91 to 299.68 ng/g dry weight and are within low to moderate pollution range. Cluster analysis showed that SL08, SL09, SL10, SL15 and SL22 can be discriminated as having high pollution loading PAHs due to industrialized region and shipping boat traffic. In this work, Principal Component Analysis (PCA) and PCA association with Multiple Linear Regressions (PCA-MLR) to identify and apportion possible sources of PAHs. Three sources of PAHs were identified: (1) traffic emission (91.57%); (2) coal or wood combustion (6.63%); and (3) spillage of petroleum based products (1.80%). Langat River is highly contaminated by PAHs from pyrogenic sources, in particular 4 rings PAHs (28.87-79.52%) and 5 to 6 rings PAHs (2.69-57.44%).

Item Type: Article
Uncontrolled Keywords: Langat River; polycyclic aromatic hydrocarbons; cluster analysis; principal component analysis; multiple linear regressions
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Divisions: Faculty of Science > Dept of Chemistry
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 04 Mar 2019 06:04
Last Modified: 27 Jun 2019 09:08
URI: http://eprints.um.edu.my/id/eprint/20577

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