4,4-二(二乙氨基)-二苯硫酮分光光度法测定铑 |
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引用本文: | 常文保,陈文,黄宝玲,慈云祥.4,4-二(二乙氨基)-二苯硫酮分光光度法测定铑[J].石油化工,1988(2). |
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作者姓名: | 常文保 陈文 黄宝玲 慈云祥 |
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作者单位: | 北京大学化学系,北京大学化学系,北京大学化学系,北京大学化学系 北京大学分校化学系学生,北京大学分校化学系学生 |
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摘 要: | 研究了BDPTK4,4'-二乙氨基)-二苯硫酮]与铑的显色反应。在乙酸-乙酸钠缓冲介质中,当抗坏血酸和 TritonX-100存在下,沸水浴加热10分钟,显色反应可迅速完成,摩尔吸光系数为8.8×10~4 1·mol~(-1)·cm~(-1)铑含量在0—35μg/26ml 范围内符合比耳定律。研究了共存离子的干扰情况并确定锗的稀溶液(20μg/ml)在室温下放置1—20天,其反应性能无明显变化;应用于萃取残液中铑的测定,其结果与 ICP 法基本一致.
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Spectrophotometric Determination of Rhodium with 4,4′-Bsi(Diethylamino)-Thiobenzophenone |
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Abstract: | In this paper,a new color reaction of rhodium with 4,4'-bis(diethylamino)-
thiobenzophenone(BDPTK)has been investigated.The color reaction develops
rapidly in the presence of tritonX-100 and ascorbic acid in boiling water bath in
10min.At λ_(max)=512nm the molar absorptivity is 8.8×10~4l·mol~(?)·cm~(-1).Beer's law
is obeyed for rhodium concentration in the range of 0 to 1.4μg/ml.Interference
of foreign ions has been studied. |
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