Yokoyama Y, Sato H
Laboratory of Analytical Chemistry, Faculty of Engineering, Yokohama National University, Japan.
J Chromatogr. 1991 Aug 30;555(1-2):155-62. doi: 10.1016/s0021-9673(01)87175-2.
A high-performance liquid chromatography method for the determination of linear alkylbenzenesulphonates (LASs) in river waters has been developed. The ppb levels of LASs can be determined by reversed-phase high-performance liquid chromatography with ultraviolet detection after on-line anion-exchange concentration and successive injection. LASs were quantitatively concentrated on the anion-exchange precolumn and easily cleaned up from river water matrix, because of its specific affinity, for the anion-exchange resin. A weak non-polar reversed-phase column was useful for the determination of LASs. The relationships between concentration and summation of peak areas were linear from 10 to 200 ppb for total LAS concentrated from 5 ml of standard solutions. Overall recovery for total LAS was found to be 99%. Total LAS in the Tama River waters was determined to be around 100 ppb by the proposed method.
已开发出一种用于测定河水中直链烷基苯磺酸盐（LASs）的高效液相色谱法。通过在线阴离子交换浓缩和连续进样后，采用反相高效液相色谱法和紫外检测可测定LASs的ppb水平。由于其对阴离子交换树脂具有特定亲和力，LASs可定量浓缩在阴离子交换预柱上，并易于从河水基质中净化。弱非极性反相柱对LASs的测定很有用。从5ml标准溶液中浓缩得到的总LAS，其浓度与峰面积总和之间的关系在10至200 ppb范围内呈线性。总LAS的总回收率为99%。通过所提出的方法测定，多摩河水中的总LAS约为100 ppb。
