抄録
A flow system for the determination of cationic surfactants in the presence of anionic surfactant is proposed. The system consists of a microcolumn packed with anion-exchange resin and a surfactant-selective polyvinyl chloride membrane electrode detector. The membrane was plasticized with phthalic acid di(2-ethylhexyl) ester. Anionic surfactants were removed by the anion-exchange resin column. The cationic surfactant was eluted by methanol/H2O = 50/50(v/v, %) and detected. The electrode detector showed the linear response with a potential slope of 45 mV/decade for dodecyltrimethylammo-nium (DTA) ion from 5×10-7 to 1×10-5M. The detection limit for DTA was 1.0×10-8 M. The proposed method was free from interferences from coexisting inorganic electrolytes, anionic surfactants and nonionic surfactants. By this method, a trace level of cationic surfactants in river water could be determined.
本文言語 | English |
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ページ(範囲) | 1-6 |
ページ数 | 6 |
ジャーナル | Bunseki Kagaku |
巻 | 40 |
号 | 1 |
DOI | |
出版ステータス | Published - 1991 1月 |
外部発表 | はい |
ASJC Scopus subject areas
- 分析化学