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二安替比林芳香族甲烷衍生物被高价金属离子氧化而显深色,因此能用作这类离子的显色剂.我们曾合成过一系列的二安替比林芳香族甲烷衍生物,并广泛用于钒,铬,铈的测定.在此基础上我们研究了二安替比林-(3,4)-二甲氧基苯基甲烷(DADMPM)与Ce(Ⅳ)的显色反应条件及应用,用于镁合金中痕量铈的测定,体系灵敏度高,稳定性好,结果满意.1 试验部分1.1 主要仪器与试剂722型分光光度计铈标准溶液:用优级纯硫酸铈按常规方法配成含Ce(Ⅳ)100μg·ml~(-1)贮备液,标定,使用时稀释成5.0μg·ml~(-1)的标准工作液.Mn(Ⅱ)溶液:用MnSO_4·H_2O配成6.0mg·ml~(-1)的水溶液
Diantipyryl Aromatic methane derivatives are oxidized by expensive metal ions and appear dark, and therefore can be used as a developer for such ions.We have synthesized a series of di-antipyrine aromatic methane derivatives, And is widely used in the determination of vanadium, chromium and cerium.On the basis of this, we have studied the color reaction of Diantipyryl- (3,4) -dimethoxyphenylmethane (DADMPM) with Ce (Ⅳ) Conditions and applications for the determination of trace cerium in magnesium alloys, the system has high sensitivity, good stability and satisfactory results.1 Experimental 1.1 The main instruments and reagents 722 spectrophotometer cerium standard solution: The standard working solution containing Ce (Ⅳ) 100 μg · ml -1 was prepared and diluted to 5.0 μg · ml -1 by standard method. The Mn (Ⅱ) solution was diluted with MnSO 4 · H 2 O Dubbed 6.0mg · ml ~ (-1) aqueous solution