Sterols as biomarkers in the surface microlayer of the estuarine areas

Murad Ali Alsalahi, Mohd Talib Latif, Masni Mohd. Ali, Doreena Dominick, Firoz Khan, Nur Ili Hamizah Mustaffa, Mohd Shahrul Mohd Nadzir, Essam Nasher, Mohamad Pauzi Zakaria

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

This study aims to determine the concentration of sterols used as biomarkers in the surface microlayer (SML) in estuarine areas of the Selangor River, Malaysia. Samples were collected during different seasons through the use of a rotation drum. The analysis of sterols was performed using gas chromatography equipped with a flame ionisation detector (GC-FID). The results showed that the concentrations of total sterols in the SML ranged from 107.06 to 505.55 ng L<sup>-1</sup>. The total sterol concentration was found to be higher in the wet season. Cholesterol was found to be the most abundant sterols component in the SML. The diagnostic ratios of sterols show the influence of natural sources and waste on the contribution of sterols in the SML. Further analysis, using principal component analysis (PCA), showed distinct inputs of sterols derived from human activity (40.58%), terrigenous and plant inputs (22.59%) as well as phytoplankton and marine inputs (17.35%).

Original languageEnglish
Pages (from-to)278-283
Number of pages6
JournalMarine Pollution Bulletin
Volume93
Issue number1-2
DOIs
Publication statusPublished - 15 Apr 2015

Fingerprint

microlayer
sterol
Biomarkers
sterols
biomarker
biomarkers
Phytoplankton
Cholesterol
Gas chromatography
Principal component analysis
Ionization
Rivers
drums (equipment)
Detectors
wet season
Malaysia
detectors
principal component analysis
gas chromatography
ionization

Keywords

  • Diagnostic ratio
  • Organic compounds
  • Principal component analysis
  • Selangor River

ASJC Scopus subject areas

  • Aquatic Science
  • Oceanography
  • Pollution

Cite this

Sterols as biomarkers in the surface microlayer of the estuarine areas. / Alsalahi, Murad Ali; Latif, Mohd Talib; Mohd. Ali, Masni; Dominick, Doreena; Khan, Firoz; Mustaffa, Nur Ili Hamizah; Mohd Nadzir, Mohd Shahrul; Nasher, Essam; Zakaria, Mohamad Pauzi.

In: Marine Pollution Bulletin, Vol. 93, No. 1-2, 15.04.2015, p. 278-283.

Research output: Contribution to journalArticle

Alsalahi, Murad Ali ; Latif, Mohd Talib ; Mohd. Ali, Masni ; Dominick, Doreena ; Khan, Firoz ; Mustaffa, Nur Ili Hamizah ; Mohd Nadzir, Mohd Shahrul ; Nasher, Essam ; Zakaria, Mohamad Pauzi. / Sterols as biomarkers in the surface microlayer of the estuarine areas. In: Marine Pollution Bulletin. 2015 ; Vol. 93, No. 1-2. pp. 278-283.
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