【摘要】 基于醋酸钠介质中，银（Ⅰ）催化过硫酸钾氧化荧光素反应，以２，２－联吡啶为活化剂，Ｔｒｉｔｏｎ Ｘ－１００为增敏剂，拟定了测定痕量银的新荧光速率法。本法由于添加 Ｔｒｉｔｏｎ Ｘ－１００表面活性剂，使得灵敏度提高了４倍，测定银含量线性范围为２～３２ μｇ／Ｌ，相对标准偏差为３．１％（ｎ＝９），检出限为１．７６ × １０－３（ｍｇ／Ｌ）。用于测定氯化银的溶度积和光谱感光板中的银，结果满意。更多还原

【Abstract】 A new catalytic fluorescence rate method for the determination of trace amount of Ag(Ⅰ) has been developed. The method is based on the oxidation of fluorescein with potas- sium persulfate in the presence of a,a’ -bipyridyl as an activator and Triton X- 100 as a sen- sitizer. The limit of detection for Ag is 1. 76×10-3 mg/L. The linear range of determination is 2. 0×10-3-3. 2 ×10-2 mg/L Ag.更多还原