Assessing the ecological risk of polycyclic aromatic hydrocarbons in sediments at Langkawi Island, Malaysia

Essam Nasher, Yook Heng Lee, Zuriati Zakaria, Salmijah Surif

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Tourism-related activities such as the heavy use of boats for transportation are a significant source of petroleum hydrocarbons that may harm the ecosystem of Langkawi Island. The contamination and toxicity levels of polycyclic aromatic hydrocarbon (PAH) in the sediments of Langkawi were evaluated using sediment quality guidelines (SQGs) and toxic equivalent factors. Ten samples were collected from jetties and fish farms around the island in December 2010. A gas chromatography/flame ionization detector (GC/FID) was used to analyse the 18 PAHs. The concentration of total PAHs was found to range from 869 ± 00 to 1637 ± 20 ng g-1 with a mean concentration of 1167.00 ± 24 ng g-1, lower than the SQG effects range-low (3442 ng g-1). The results indicated that PAHs may not cause acute biological damage. Diagnostic ratios and principal component analysis suggested that the PAHs were likely to originate from pyrogenic and petrogenic sources. The toxic equivalent concentrations of the PAHs ranged from 76.3 to 177 ng TEQ/g d.w., which is lower compared to similar studies. The results of mean effects range-median quotient of the PAHs were lower than 0.1, which indicate an 11% probability of toxicity effect. Hence, the sampling sites were determined to be the low-priority sites.

Original languageEnglish
Article number858309
JournalThe Scientific World Journal
Volume2013
DOIs
Publication statusPublished - 2013

Fingerprint

Poisons
Malaysia
Polycyclic Aromatic Hydrocarbons
Polycyclic aromatic hydrocarbons
Islands
PAH
Sediments
Guidelines
Flame Ionization
Fisheries
Ships
Petroleum
Hydrocarbons
Principal Component Analysis
Gas Chromatography
sediment
Ecosystem
Toxicity
Jetties
toxicity

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Environmental Science(all)
  • Medicine(all)

Cite this

Assessing the ecological risk of polycyclic aromatic hydrocarbons in sediments at Langkawi Island, Malaysia. / Nasher, Essam; Lee, Yook Heng; Zakaria, Zuriati; Surif, Salmijah.

In: The Scientific World Journal, Vol. 2013, 858309, 2013.

Research output: Contribution to journalArticle

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