ノンサプレッサー型イオンクロマトグラフィーによる粉末含有化粧品中の硫黄の定量

概要

論文の詳細を見る
A non-suppressor ion chromatographic determination of sulfur in cosmetic products containing powders has been studied by converting sulfur to sulfate ion. The pretreatment of samples was almost the same as the one for gravimetric analysis, which includes a neutralization process with hydrochloric acid. But the removal of powders was necessary before the oxidation process due to their interference. It was also revealed that a large amount of chloride ion existing in the sample solution greatly affected characteristics of an eluent, and consequently eluted by incorporating a part of the sulfate ion. The method was modified to dilute the test solution to adjust the concentration of the chloride ions at less than 30 mM, and applied to the cosmetic products containing 2.7% sulfur. The results were satisfactory with R.S.D. of 1.14% and 99.1% recovery.
社団法人日本薬学会の論文
1996-02-29