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采用苯基重氮氨基偶氮苯为显色剂测定镍已有报道。本文对其衍生物-邻羧基苯基重氮偶氮苯(OC-DDA)与镍反应进行了研究,结果表明,此显色反应的灵敏度较高(摩尔吸光系数达1.67×10~5),可用于合金钢中镍的测定。
The use of phenyldiazoaminoazobenzene as a reagent for the determination of nickel has been reported. In this paper, the reaction of its derivative o-carboxyphenyldiazoazobenzene (OC-DDA) with nickel was studied. The results show that the sensitivity of this color reaction is high (the molar absorptivity is 1.67 × 10 ~ 5) Can be used for determination of nickel in alloy steel.