キャピラリー電気泳動法によるクロムめっき液中の硫酸イオンおよびケイフッ化物イオンの定量分析

抄録

Sulfate(SO₄^2-) and hexafluorosilicate(SiF₆^2-) ions in chromium plating bath were simultaneously analyzed by capillary electrophoresis(CE), using a chromate buffer with indirect UV-detection at 270 nm. Determination was carried out within 10 minutes by diluting the solution with water without any pretreatment. The CE method was found to be powerful technique for chromium plating bath control.