药物普鲁本辛是阳离子有机物,在pH2—3时,与阴离子钨酸根化合,生成普鲁本辛钨酸盐沉淀,沉淀效果良好。灼烧后的WO_3不需用铂皿以氢氟酸处理除硅,分析结果与现行重量法一致。本法操作简便,易于掌握,准确度和重现性均好,满足了生产要求。主要试剂高氯酸-硝酸混合酸(3+2);0.5%高氯酸洗液;0.5%氢氧化钠溶液;6%普鲁本辛溶液;0.1%普鲁本辛洗液。 Prupacin drug is a cationic organic matter, at pH2-3, with the tungstate anion, resulting in precipitation of coprostoxin tungstate, the precipitation effect is good. Burned WO_3 without hydrofluoric acid treatment with platinum dish except silicon, the analysis results consistent with the current gravimetric method. This method is simple, easy to grasp, accuracy and reproducibility are good, to meet the production requirements. The main reagent perchloric acid - nitric acid mixed acid (3 +2); 0.5% perchloric acid lotion; 0.5% sodium hydroxide solution; 6% of the solution of probunsine;