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本文在文献的基础上研究了乳化剂OP存在时,于0.2N硫酸介质中以碘化钾-5-Br-PADAP作显色剂,水相分光光度测定锑(Ⅲ)的条件。结果表明:缔合物的最大吸收波长为615nm,表观摩尔吸光系数为4.6×10~4,0-16微克锑/10毫升服从比尔定律;缔合物瞬间完全显色並至少稳定2小时,存在基体铜时仅能稳定50分钟。室温低于22℃易出现混浊,置约25℃水浴中温热5-10分钟即清晰。基体及共存元素影响的消除,除镍黄铜和康铜需以等量铜和镍为底绘制工作曲线外,其余铜基合金均以等量铜作参比
In this paper, we studied the conditions of antimony (Ⅲ) in the presence of emulsifier OP by using potassium iodide-5-Br-PADAP as reagent and aqueous phase spectrophotometry in 0.2N sulfuric acid medium. The results showed that the maximum absorption wavelength of the complex was 615 nm, the apparent molar absorptivity was 4.6 × 10 ~ 4, the concentration of Sb-16 was 16 μg / When the base copper is stable for only 50 minutes. Room temperature below 22 ℃ prone to opacity, set about 25 ℃ water bath for 5-10 minutes is clear. Elimination of the impact of matrix and coexisting elements, except nickel brass and constantan need to draw the working curve with the same amount of copper and nickel, the rest of the copper-based alloys are the same amount of copper for reference