Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6356995 | Marine Pollution Bulletin | 2015 | 6 Pages |
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 Lâ1. 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%).
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Oceanography
Authors
Murad Ali Alsalahi, Mohd Talib Latif, Masni Mohd Ali, Doreena Dominick, Md Firoz Khan, Nur Ili Hamizah Mustaffa, Mohd Shahrul Mohd Nadzir, Essam Nasher, Mohamad Pauzi Zakaria,