摘要
研究了在稀盐酸介质中，铜（Ⅱ）催化过硫酸钾氧化碘化钾，生成的Ｉ３与罗丹明６Ｇ生成缔合物而使罗丹明６Ｇ荧光猝灭，建立了催化荧光法测定痕量铜的方法。线性范围为４～５４（μg/Ｌ）；检出限为ｌ. ６ μｇ／Ｌ。考察了３０种共存离子的影响。方法用于铝合金中铜的测定，结果令人满意。
A catalytic fluorimetric method for determination tof race copper has been devel- oped. The method is based on the fluorescence quenching of rhodamine 6G by the reaction product I3 of potassium persulfate and potassium iodide with Cu(Ⅱ) as a catalyst in dilute hydrochloric acid medium. The linear range of determination is 4～54μg/L. The detection limit is l. 6μg/L. The method is simple, fast and with good selectivity. It has been applied to the determiantion of copper in aluminum alloys with satisfactory results.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1997年第8期937-940,共4页
Chinese Journal of Analytical Chemistry
关键词
荧光猝灭法
罗丹明6G
铜
催化动力学
铝合金
Catalytic fluorimetry, fluorescence quenching, rhodamine 6G, copper
