School of Environmental and Natural Resource Sciences, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
Environ Monit Assess. 2012 Mar;184(3):1325-34. doi: 10.1007/s10661-011-2043-5. Epub 2011 Apr 7.
This study aims to determine the composition of surfactants in the lake surface microlayer, rainwater, and atmospheric aerosols in the area surrounding Lake Chini, Pahang. Surfactants in the lake surface microlayer were taken from seven different stations around the lake, while samples of rainwater were taken from five different sampling stations. The samples of atmospheric aerosols were collected from the Lake Chini Research Centre which is in close proximity to the lake. The colorimetric analysis method was used to determine the composition and concentration of anionic surfactants as methylene blue active substances (MBAS) and cationic surfactants as disulphine blue active substances (DBAS). The concentration of anionic surfactants, as MBAS, in the surface microlayer ranged between 0.08 to 0.23 μmol L(-1), while the range of concentration of cationic surfactants as DBAS ranged from 0.09 to 0.11 μmol L(-1). The concentration of MBAS was higher in rainwater when compared to surfactants in the lake surface microlayer. The high concentration of surfactants in the fine mode of atmospheric aerosols suggests that natural and anthropogenic sources of surfactants contribute to the atmospheric surfactants.
本研究旨在确定彭亨州奇尼湖周边地区湖表微层、雨水和大气气溶胶中表面活性剂的组成。湖表微层中的表面活性剂取自湖周围的七个不同站点，而雨水样本取自五个不同的采样站。大气气溶胶样本取自紧邻湖泊的奇尼湖研究中心。采用比色分析法测定阴离子表面活性剂（以亚甲蓝活性物质 (MBAS) 表示）和阳离子表面活性剂（以二硫代蓝活性物质 (DBAS) 表示）的组成和浓度。湖表微层中阴离子表面活性剂（以 MBAS 表示）的浓度范围为 0.08 至 0.23 μmol L(-1)，而阳离子表面活性剂（以 DBAS 表示）的浓度范围为 0.09 至 0.11 μmol L(-1)。与湖表微层中的表面活性剂相比，雨水中的 MBAS 浓度更高。大气气溶胶细模态中表面活性剂浓度较高表明，天然和人为来源的表面活性剂均对大气表面活性剂有贡献。
