Spectrophotometric Determination of Rhodium with Tin(II) Chloride
Spectrophotometric Determination of Rhodium with Tin(II) Chloride
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DOI：
10.1021/ac60107a018
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发表时间：
1955-11
影响因子：
7.4
通讯作者：
G. H. Ayres;B. L. Tuffly;J. Forrester
中科院分区：
文献类型：
--
作者：
G. H. Ayres;B. L. Tuffly;J. Forrester
基于氯化亚锡在盐酸溶液中产生的粉红色至红色，最大吸光度为475 mg，提出了一种光度法测定铑的新方法。这种颜色在室温下显色缓慢，但在沸点时迅速形成。颜色重现性好，稳定性好。氯化锡(II)的量或盐酸量的较大变化对吸光度没有影响。最佳测量浓度范围为1.00-cm。细胞中大约有4到20ppm的铑。Ru、Os、Pd、金、铬等干扰Rh测定的元素很容易被除去。给出了一种由两个波长的吸光度同时测定Rh和Ph的方法，对每个元素同时测定的相对误差约为1%。
A method is given for the spectrophotometric determination of rhodium, based upon the pink to red color, absorbance maximum at 475 mg, formed by addition of tin (II) chloride in hydrochloric acid solution. The color develops slowly at room temperature, but forms rapidly at the boiling point. The color is reproducible and stable. Wide variations in the amount of tin (II) chloride or in the amount of hydrochloric acid are without effect on the absorbance. The optimum con-centration range for measurement in 1.00-cm. cells is about 4 to 20 ppm of rhodium. Ruthenium, osmium, palladium, gold, and chromium, which interfere with the determination of rhodium, are easily removed. A method is given for the simultaneous determination of rhodium and platinum from measurements of the absorbance at two wave lengths; the relative error of the simultaneous determination is approximately 1% for each element.