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铂和铑的性质很接近,在混合溶液中,用一般分光光度法单独测定它们是非常困难的。用双波长分光光度法测定,至今未见报导.本文,用氯化亚锡法,在测定方法上具有下述特点:(1)根据双波长分光光度法的原理,分别测出铂和铑的吸收光谱后,选择合适的波长组合测定铑存在下的铂;(2)在普通分光光度计上完成双波长法的测定;(3)单波长法同时测定铂存在下的铑。
Platinum and rhodium are very similar in nature, and it is very difficult to measure them alone in a spectrophotometric method in a mixed solution. Using dual-wavelength spectrophotometry, has not been reported so far.In this paper, with stannous chloride method, the determination method has the following characteristics: (1) According to the principle of dual-wavelength spectrophotometry, were measured platinum and rhodium After absorption of the spectrum, a suitable wavelength combination is selected for the determination of platinum in the presence of rhodium; (2) the determination of the dual wavelength method is carried out on an ordinary spectrophotometer; and (3) the simultaneous determination of rhodium in the presence of platinum by the single wavelength method.