관속의 Benzophenone에 삼성분 착물을 흡착-예비농축한 후 구리의 정량 = Determination of Copper after Adsorption-Preconcentration with Its Ternary Complex on Benzophenone in a Column

다국어 초록 (Multilingual Abstract)

A technique for the determination of trace amount of copper(Ⅱ) after the preconcentration by adsorbing on benzophenone in a column as Cu(Ⅱ)-nitroso-R salt-CTAB ternary complex was developed. Several experimental conditions such as the pH of sample solution, the amount of nitroso-R salt and cetyltrimethylammonium bromide(CTAB), the amount of benzophenone, and the flowrate of sample solution were optimized. The interfering effects of diverse ions were investigated. Co(Ⅱ) and Ni(Ⅱ) interfered with heavier than any other ions, but these effects could be overcome sufficiently by adjusting the concentration of nitroso-R salt to be 10＾(-3)M. The detection limit of this technique was 0.8 ngmL＾(-1). Recovery yields of Cu(Ⅱ) in real samples were mostly above 93%. Based on the experimental results, this proposed technique could be applied to the determination of trace amount of Cu(Ⅱ) in real aqueous samples.