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

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

Zhang Shuyun

1.
Northwestern Textile Institute, Xi'an

Received Date: 15 January 1987
Available Online: 6 July 1987

The polarographie wave of Co(Ⅱ)-5-Br-PADAP complex has been studied in hydroxylamine-NaOH solution in the presence of 0.05-0.2MNaOH, 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.
- Polarographic analysis,
- Micro analysis,
- Cobalt
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