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三元络合显色体系,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.
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.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1994年第10期1033-1036,共4页
Chinese Journal of Analytical Chemistry
关键词
导数光度法
重油
铜
镍
锌
Equal absorption point,Multiwavelength linear regression,Derivative spec- trophotometry,Simultaneous determination,Heavy oil,Copper,Nickel,Zinc.
