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《Journal of Xi'an Engineering University》 2003-02
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THE SIMULTANEOUS DETERMINATION OF Bi(Ⅲ)、Cu(Ⅱ)、Co(Ⅱ) AND Ni(Ⅱ) BY THE PARTIAL LEASTSQUARES METHOD

LIU Minwu1, TIAN Min2,LI Hua2(1.Dept. of Geology, Northwest University, Xian 710069,China;2.Institute of Analitical Science, Northwest University, Xian 710069,China)  
Bi(Ⅲ)?Cu(Ⅱ)?Co(Ⅱ) and Ni(Ⅱ)can form stable complexes with 2-(diethylamino)phonol(3,5-Br2-PADAP)in HCOOH-HCOONa buffer solution, and the absorption spectra overlap seriously. The simultaneous spectrophotometric determination of trace Bi(Ⅲ)?Cu(Ⅱ)?Co(Ⅱ)and Ni(Ⅱ) in the simulation samples was successfully made by using partial least squares method. The results show that partialleastsquares are an excellent multivariate statiscal method suited to determine simultaneously trace components without preliminary separation.
【Fund】: 国家重点基础研究发展规划"大规模成矿作用与大型矿集区预测"项目(G1999043211);; 国土资源大调查"中国超大型铜镍铂岩浆硫化物矿床预测研究"项目(200110200058)
【CateGory Index】: O657.32
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