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前报认为此新类型蓝色酸性色素的基本构造为二氨基三苯甲烷磺酸,据此,找出了另一种同类型的酸性色素——专利蓝Ⅴ(PBV)。对它进行了配合物的吸收峰、试剂空白的降低、试剂浓度的选定、最佳pH值的选择、检出限、检量线、色素与两种胺的分子配合比、PBV测定法的精密度、五种胺配合物的吸收系数比较等研究,证明它与二甲苯蓝、羊毛罂粟蓝有类似的性质以及同样的灵敏度。进一步说明所认定的此类型的基本构造是对的。
Formerly reported that the basic structure of this new type of blue acid pigment is diaminotriphenylmethane sulfonic acid, according to which another type of acidic pigment, patent blue V (PBV), has been identified. The absorption peak of the complex, the decrease of reagent blank, the selection of reagent concentration, the optimal pH value, the detection limit, the calibration curve, the molecular ratio of pigment and two amines, Precision, comparison of the absorption coefficient of five amine complexes and other studies have shown that it has similar properties with xylene blue, wool poppy blue and the same sensitivity. It is right to state that the basic structure of this type is identified.