期刊
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
卷 55, 期 4, 页码 788-793出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/jccs.200800118
关键词
mean centering of ratio kinetic profiles; Ni(II); Zn(II)
The mean centering of ratio kinetic profiles method was used for the simultaneous determination of binary mixtures of Ni(II) and Zn(II) in water samples, without prior separation steps. The method is based on the difference in the rate of the reaction of Ni(II) and Zn(II) with xylenol orange at pH 5.3. The method allows rapid and accurate determination of Ni(II) and Zn(II). The analytical characteristics of the methods for the simultaneous determination of binary mixtures of Ni(II) and Zn(II) were calculated. The linear range was 0.025-2.400 mu g mL(-1) and 0.025-2.20 mu g mL(-1) for Zn(II) and Ni(II), respectively. Interference effects of common anions and cations were studied, and the method was successfully applied to the simultaneous determination of Zn(II) and Ni(II) in water samples.
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