Separation and Determination of Cobalt, Rhodium, Nickel and Iridium with 2-(6-Methyl-2-Benzothiazolylazo)-5-Diethylamino Phenol by HPLC

Chemical Research in Chinese Universities ›› 1993, Vol. 9 ›› Issue (1): 18-23.

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Separation and Determination of Cobalt, Rhodium, Nickel and Iridium with 2-(6-Methyl-2-Benzothiazolylazo)-5-Diethylamino Phenol by HPLC

LIU Qi-ping, ZHANG Hua-shan, CHENG Jie-ke

Department of Chemistry, Wuhan University, Wuhan, 430072

Received:1992-01-19 Online:1993-01-24 Published:2011-08-17
Supported by:
Supported by the National Natural Science Foundation of China

Abstract

Abstract: The synthesis and spectrophotometric properties of 2-(6-methyl-2-benzothiazolylazo)-5-diethylamino phenol (MBTAE), and the use of it as a precolumn derivatizing reagent to separate Co(Ⅱ), Ni(Ⅱ), Rh(Ⅲ) and Ir( Ⅳ) complexes by HPLCare discussed. When the mobile phase consists of methanol/water(90/10Ⅴ/Ⅴ), acetate buffer with pH 4.0 and 5×10^-5mol/L EDTAsolution, the four complexes Can be separated within₉ min on ODScolumn. The detection limits (20 μLsample size) are 0.059 ppb, 0.062 ppb, 0.053 ppb and 0. 049 ppb for Co(Ⅱ), Rh(Ⅲ), Ni(Ⅱ) and lr(Ⅳ) respectively at a signal-to-noise ratio of 3.

Key words: Cobalt, Rhodium, Nickel, Iridium, HPLC

LIU Qi-ping, ZHANG Hua-shan, CHENG Jie-ke . Separation and Determination of Cobalt, Rhodium, Nickel and Iridium with 2-(6-Methyl-2-Benzothiazolylazo)-5-Diethylamino Phenol by HPLC[J]. Chemical Research in Chinese Universities, 1993, 9(1): 18-23.

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Separation and Determination of Cobalt, Rhodium, Nickel and Iridium with 2-(6-Methyl-2-Benzothiazolylazo)-5-Diethylamino Phenol by HPLC

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