School of Environmental and Natural Resource Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
School of Environmental and Natural Resource Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
Mar Pollut Bull. 2014 Mar 15;80(1-2):344-50. doi: 10.1016/j.marpolbul.2013.12.019. Epub 2013 Dec 25.
This study aims to determine the levels of methylene blue active substances (MBAS) and ethyl violet active substances (EVAS) as anionic surfactants and of disulphine blue active substances (DBAS) as cationic surfactants in the surface microlayer (SML) around an estuarine area using colorimetric methods. The results show that the concentrations of surfactants around the estuarine area were dominated by anionic surfactants (MBAS and EVAS) with average concentrations of 0.39 and 0.51 μmol L⁻¹, respectively. There were significant between-station differences in surfactant concentrations (p<0.05) with higher concentrations found at the stations near the sea. The concentration of surfactants was higher during the rainy season than the dry season due to the influence of runoff water. Further investigation using total organic carbon (TOC) and total organic nitrogen (TON) shows that there is a significant correlation (p<0.05) between both anionic and cationic surfactants and the TON concentration.
本研究旨在使用比色法测定河口地区表面微层（SML）中作为阴离子表面活性剂的亚甲蓝活性物质（MBAS）和乙基紫活性物质（EVAS）以及作为阳离子表面活性剂的二硫嗪蓝活性物质（DBAS）的水平。结果表明，河口地区周围的表面活性剂浓度主要由阴离子表面活性剂（MBAS 和 EVAS）主导，平均浓度分别为 0.39 和 0.51 μmol/L。由于径流水的影响，各站位之间的表面活性剂浓度存在显著差异（p<0.05），靠近海域的站位浓度较高。由于径流水的影响，雨季的表面活性剂浓度高于旱季。进一步使用总有机碳（TOC）和总有机氮（TON）进行调查表明，阴离子和阳离子表面活性剂与 TON 浓度之间存在显著相关性（p<0.05）。
