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N-苯甲酰-N-苯基羟胺(BPHA)及其衍生物N-肉桂酰-N-邻甲基羟胺(N-CTHA)用于萃取分光光度测定钛、铌及钒具有很好的选择性,但萃取操作较烦,且要使用对人体健康有害的三氯甲烷或四氯化碳。作者曾以非离子表面活性剂Triton X-100作增溶剂,直接在水相用BPHA光度法测定铝合金中铁,克服了上述不足。本文研究了以Triton X-100作增溶剂,在水相中直接以BPHA及NCTHA显色的适当条件,测定了铝合金和合金
N-Benzoyl-N-phenylhydroxylamine (BPHA) and its derivative N-cinnamoyl-N-o-methylhydroxylamine (N-CTHA) are good candidates for the extraction spectrophotometric determination of titanium, niobium and vanadium However, extraction operations are more troublesome, and use chloroform or carbon tetrachloride, which is harmful to human health. The author used nonionic surfactant Triton X-100 as solubilizer to measure the iron in aluminum alloy directly by BPHA spectrophotometry in aqueous phase, which overcomes the above problems. In this paper, Triton X-100 as a solubilizer, in the water phase directly with BPHA and NCTHA color appropriate conditions, measured the aluminum alloy and alloy