The Application of Micellar Media in Differential Rate Kinetics Analysis──Simultaneous Determination or Cobalt and Nickel

Abstract

Abstract: Micellar Media in differential rate kinetics analysis has been applied to simultaneous determination of cobalt and nickel.This method was based on the formation of ternary complex of them with 4-(2-pyridylazo)resorcinol(PAR)and cetyltrimethylammonium bromide(CTMAB).The rate of the formation of ternary complex of Co(Ⅱ) was very fast, but that of Ni(Ⅱ) was relatively slow.The relative deviation for determinations of two components was within 8%.The logarithmic extrapolation method with microcomputer 386 has been applied to the determination of Co(Ⅱ) and Ni(Ⅱ)in synthetic samples with satisfactory results.

Key words: Stopped-flow technique, Differential rate kinetics analysis, Cobalt, Nickel

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LIU He-Chun, CAI Ru-Xiu, HUANG Hou-Ping. The Application of Micellar Media in Differential Rate Kinetics Analysis──Simultaneous Determination or Cobalt and Nickel[J]. Chem. J. Chinese Universities, 1996, 17(5): 719.

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The Application of Micellar Media in Differential Rate Kinetics Analysis──Simultaneous Determination or Cobalt and Nickel

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