Applications of Ion Chromatography and Capillary Electrophoresis Analyses for Determination of Inorganic Ions in Acidic Detergents

DOI Web Site
  • OOSHIMA Tomoko
    Osaka City Institute of Public Health and Environmental Sciences

Bibliographic Information

Other Title
  • 住宅用洗浄剤中の塩化水素および硫酸の定量におけるイオンクロマトグラフ法およびキャピラリー電気泳動法の有用性
  • ジュウタクヨウ センジョウザイチュウ ノ エンカ スイソ オヨビ リュウサン ノ テイリョウ ニ オケル イオン クロマトグラフホウ オヨビ キャピラリー デンキ エイドウホウ ノ ユウヨウセイ

Search this article

Abstract

To control household products containing harmful substances, Japanese law sets an upper limit (i.e., under 10%) on the content of hydrochloric acid (HCl) and sulfuric acid (H2SO4) in commercially available acidic detergents for use in homes. Acid-base titration is the officially authorized method of determining whether these acids are within set limits. However, in cases of detergents containing organic acids and an inorganic acid in addition to HCl and H2SO4 these acids also consume the alkaline reagent during titration. For this reason, the present study applied ion chromatography (IC) and capillary electrophoresis (CE) to the determination of the two regulated acids. CE analysis of the two regulated acids following a large dilution (×10,000) of acidic detergents showed no interference from sample matrixes such as the surface-active agent. Rather it was found that citric and malic acids interfered in the determination of the two regulated acids in IC analysis. Organic acids other than citric and malic acids did not affect the quantification of the two regulated acids in either IC or CE analysis.

Journal

Keywords

Details 詳細情報について

Report a problem

Back to top