Sterols as biomarkers in the surface microlayer of the estuarine areas.
Sterols as biomarkers in the surface microlayer of the estuarine areas.
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甾醇作为河口区域表面微层的生物标志物。
DOI：
10.1016/j.marpolbul.2015.01.011
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发表时间：
2015
影响因子：
5.8
通讯作者：
M. Zakaria
中科院分区：
文献类型：
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作者：
Murad Ali Alsalahi;Mohd Talib Latif;Masni Mohd. Ali;D. Dominick;M. F. Khan;N. I. H. Mustaffa;M. Nadzir;Essam Nasher;M. Zakaria
本研究的目的是确定在马来西亚雪兰莪河河口地区的表面微层（SML）中用作生物标志物的甾醇的浓度。在不同的季节通过使用转鼓收集样品。使用配备有火焰离子化检测器（GC-FID）的气相色谱法进行甾醇的分析。结果表明，SML中总甾醇的浓度范围为107.06至505.55 ng L-1。总甾醇浓度被认为是在雨季较高。发现胆固醇是SML中最丰富的甾醇组分。甾醇的诊断率显示了天然来源和废物对SML中甾醇贡献的影响。进一步的分析，使用主成分分析（PCA），表明不同的输入甾醇来自人类活动（40.58%），陆源和植物输入（22.59%），以及浮游植物和海洋输入（17.35%）。
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−1. 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%).