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等吸收点—多波长线性回归—导数分光光度法同时测定重油中的铜,镍,锌
引用本文:马波,刘立行.等吸收点—多波长线性回归—导数分光光度法同时测定重油中的铜,镍,锌[J].分析化学,1994,22(10):1033-1036.
作者姓名:马波  刘立行
作者单位:抚顺石油学院应用化学系 抚顺113001
摘    要:本文提出了一种同时测定多组分的新方法,即等吸收点-多波长线性回归-导数分光光度法。利用金属离子-5-Br-PADAP-CPB三元络合显色体素,同时测定了重油中的铜、镍、锌,相对标准偏差小于2.6%,分析结果与ICP-AES及GF-AAS法吻合。与常规分光光度法比较,灵敏度提高10倍左右。

关 键 词:导数光度法  重油      

Simultaneous Determination of Copper,Nickel and Zinc in Heavy Oil Sample by the Equal Absorption Point-Multi-wavelength Linear Regression-Derivative Spectrophotometry
Ma Bo,Liu Lihang,Xu Yongye.Simultaneous Determination of Copper,Nickel and Zinc in Heavy Oil Sample by the Equal Absorption Point-Multi-wavelength Linear Regression-Derivative Spectrophotometry[J].Chinese Journal of Analytical Chemistry,1994,22(10):1033-1036.
Authors:Ma Bo  Liu Lihang  Xu Yongye
Abstract:A method for the simultaneous determination of multicomponent, that is, equal absorption point-multiwavelength linear regression-derivative spectrophotometry, has been developed. It has been used to determine Cu, Ni and Zn in heavy oil sample simultaneously by using the system of metal ions-5-Br PADAP-CPB. The relative standard derivation is less than 2. 6%,the experimental results agree with those obtained by ICP-AES and GF-AAS. The sensitivity of the derivative spectrophotometry is about 10 times higher than that of general spectrophotometry.
Keywords:Equal absorption point  Multiwavelength linear regression  Derivative spec- trophotometry  Simultaneous determination  Heavy oil  Copper  Nickel  Zinc  
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