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在０．０７５～０．１５ｍｏｌ／ＬＨ２ＳＯ４介质中，Ｓｂ（Ⅲ）与水杨基荧光酮和ＯＰ形成有色络合物，最大吸收波长为５２５ｎｍ，摩尔吸光系数为１．５９ｘ１０５，当在体系中分别加入１０ｍｇ１６种不同有机络合剂时，其中１．２－环已烷二胺四乙酸和亚氨基二乙酸使体系吸光度明显降低。其余对吸光度无明显影响。α－羟基异丁酸、磺基水杨酸、甘露酸和丙二酸分别对Ｃｕ２＋，Ｚｎ２＋，Ｃｄ２＋，Ｐｂ２＋，Ａｌ（Ⅲ）。Ａｓ（Ⅴ），Ｖ（Ⅴ），Ｚｒ（Ⅳ），Ｗ（Ⅵ），Ｓｎ（Ⅳ）和Ｆｅ（Ⅲ）等的允许量有明显提高，方法用于纯铝和铝合金中微量锑的测定，结果满意。
In 0.075 ~ 0.15mol / LH 2 SO 4 medium, Sb (Ⅲ) formed a colored complex with salicylfluorone and OP with a maximum absorption wavelength of 525 nm and a molar absorptivity of 1.59 × 105 Adding 10mg16 kinds of different organic complexing agent, which 1.2-cyclohexanediaminetetraacetic acid and iminodiacetic acid system significantly decreased the absorbance. The rest had no significant effect on absorbance. α - hydroxyisobutyric acid, sulfosalicylic acid, mannose and malonic acid on Cu2 +, Zn2 +, Cd2 +, Pb2 + and Al (Ⅲ) respectively. The allowable amounts of As (V), V (V), Zr (Ⅳ), W (Ⅵ), Sn (Ⅳ) and Fe (Ⅲ) were obviously improved. The method was applied to the determination of trace antimony in pure aluminum and aluminum alloy Satisfactory results.