ON THE POLAROGRAPHIC CATALYTIC WAVE OF Co(Ⅱ)-5-Br-PADAP

Chinese Journal of Applied Chemistry ›› 1988, Vol. 0 ›› Issue (1): 93-96.

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ON THE POLAROGRAPHIC CATALYTIC WAVE OF Co(Ⅱ)-5-Br-PADAP

Zhang Shuyun

Northwestern Textile Institute, Xi'an

Received:1987-01-15 Revised:1987-07-06 Published:1988-02-10 Online:1988-02-10

Abstract

Abstract: The polarographie wave of Co(Ⅱ)-5-Br-PADAP complex has been studied in hydroxylamine-NaOH solution in the presence of 0.05-0.2M NaOH, 0.37—0.7% hydroxylamine and 1.2×10^-6-2.1×10^-6M 5-Br-PADAP. Co(Ⅱ) can be determined in the concentration from 1.7×10^-9 to 3.4×10^-7M. This method has been used for determining micro amount of cobalt in steel samples with a coefficient of variation of 6%. The property of the peak current and the composition of the complex have also been discussed.

Key words: Polarographic analysis, Micro analysis, Cobalt

Zhang Shuyun. ON THE POLAROGRAPHIC CATALYTIC WAVE OF Co(Ⅱ)-5-Br-PADAP[J]. Chinese Journal of Applied Chemistry, 1988, 0(1): 93-96.

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ON THE POLAROGRAPHIC CATALYTIC WAVE OF Co(Ⅱ)-5-Br-PADAP

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