双波长分光光度法由于其能消除干扰和背景值的影响,近年来在国内外得到迅速发展,已有资料评述,我们曾用等吸收法和四阶导数分光光度法在铂钯混合样品中同时测定铂和钯取得成功。Honkawa曾设计了函数发生器,使在λ_1和λ_2两个波长处的吸光值得以不同程度的放大,而放大倍数之比由被消除的干扰组份在λ_1和λ_2的吸光值之比所确定。 Dual-wavelength spectrophotometry has been rapidly developed at home and abroad in recent years due to its ability to eliminate interference and background values. It has been reported that we have used both isoabsorption and fourth-order derivative spectrophotometry in platinum-palladium mixed samples Determination of platinum and palladium success. Honkawa has designed a function generator that amplifies the absorbance at both λ_1 and λ_2 wavelengths to varying degrees, with the ratio of magnification being determined by the ratio of the absorbance of the eliminated interfering components at λ_1 and λ_2.