Chem. J. Chinese Universities ›› 1983, Vol. 4 ›› Issue (2): 260.
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Yuan Dawen, Chen Siqing, Peng Shanshan
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Abstract: In this paper, varieous conditions,suitable for determining ultratracea-mounts of Cu2+ when mixed reductant of sulphanilic acid and α-naphthyl-amine is oxidized by H2O2 using as a catalytic reaction,have been examined in detail. The sensitivity of this method presented as apparent molar absorptivity equals 1.25×107. The interference of many common ions can be separated by precipitating with ammonia. Trace amounts of Cu2+ in some high-purity reagents, such as NaCl, LiCl·H2O, were determined by this method with satisfactory results.
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Yuan Dawen, Chen Siqing, Peng Shanshan . SPECTROPHOTOMETRIC DETERMINATION OF ULTRATRACEAMOUNTS COPPER (Ⅱ) BY A NEW AND HIGH SENSITIVELY CATALYTIC REACTION[J]. Chem. J. Chinese Universities, 1983, 4(2): 260.
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http://www.cjcu.jlu.edu.cn/EN/Y1983/V4/I2/260