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三苯甲烷染料是多种金属离子的灵敏显色试剂,但其在导数光度法中的应用未见报导。本文论述铬天青S与钪在混合表面活性剂存在下的导数光谱行为。 试验所用的稀土元素标准溶液,以光谱纯稀土氧化物配制成Sc 1mg/ml,10μg/ml,RE 1mg/ml、10mg/ml的盐酸贮备液。铬天青S(CAS)溶液的浓度为1.0×10~(-3)M;溴化十六烷基三甲铵(CTMAB)溶液的浓度为1.0×10~(-2)M;乳化剂(OP)溶液配成3％(v/v)。
Triphenylmethane dyes are sensitive chromogenic reagents for a variety of metal ions, but their use in derivative spectrophotometry has not been reported. This article discusses the derivative spectra of chrome azure S and scandium in the presence of a mixed surfactant. Rare earth elements used in the standard test solution, the spectrum of rare earth oxides formulated Sc 1mg / ml, 10μg / ml, RE 1mg / ml, 10mg / ml of hydrochloric acid stock solution. The concentration of chromium azure S (CAS) solution was 1.0 × 10 -3 M; the concentration of cetyltrimethylammonium bromide (CTMAB) solution was 1.0 × 10 -2 M; ) Solution dubbed 3% (v / v).