title: Reversed-phase high-performance liquid chromatographic determination of linear alkylbenzenesulphonates in river water at ppb levels by precolumn concentration.
abstract: 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.
authors.affiliation: Laboratory of Analytical Chemistry, Faculty of Engineering, Yokohama National University, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Yokoyama
authors.forename: H
authors.initials: H
authors.lastname: Sato
mesh_terms: D000476:Alkanesulfonates / Q000032:analysis*; D017738:Alkanesulfonic Acids; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D000476:Alkanesulfonates; D017738:Alkanesulfonic Acids; D014874:Water Pollutants, Chemical; C030641:alkylbenzyl sulfonic acid; D014867:Water