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资料研究在保护胶聚乙烯醇的存在下,磷锑钼三元杂多酸,磷钒钼三元杂多酸与碱性染料在水溶液中的离子缔合作用,实验指出以结晶紫的显色灵敏度为最高,罗丹明B较低。测得络合物的组成比为P:碱性染料=1:2。并用于铁中微量磷的测定。本文研究了呫吨染料罗丹明B和磷钼二元杂多酸在含有聚乙烯醇的水溶液中显色反应的适宜条件和离子缔合物的组成,比一般磷钼蓝光度法的灵敏度提高约10倍。并应用于金属铜及铜合金中微量磷的直接测定,取得较好的效果。
Materials Research In the presence of protective polyvinyl alcohol, phosphorus antimony molybdenum ternary heteropolyacid, phosphorus vanadium molybdenum ternary heteropolyacid and alkaline dye in aqueous solution of the association of ions, experiments show that the crystal violet color Sensitivity is the highest, rhodamine B is lower. The composition ratio of the complex was measured as P: basic dye = 1: 2. And for the determination of trace phosphorus in iron. In this paper, the suitable conditions for the color reaction of xanthene dyes Rhodamine B and molybdenum-phosphorus-binary heteropolyacid in an aqueous solution containing polyvinyl alcohol and the composition of the ion-association compounds are studied. The sensitivity is improved by about 50% 10 times. And applied to the determination of trace amounts of trace phosphorus in copper and copper alloys, and achieved good results.