作者们研究了应用0.1%的金莲橙OO(ТрпеодииOO)溶液及0.15%次甲蓝溶液为内指示剂的亚硝酸钠滴定法测定:对氨基水杨酸钠,苯佐卡因,奴佛卡因,非那西汀,磺胺軟膏中的磺胺及含非那西汀的混合制剂(阿司匹林、匹拉米董,咖啡因,甲基咖啡因)中的非那西汀。此法可免去过去所延用的亚硝酸钠法的外指示剂——碘化钾淀粉试纸所引起的各项 The authors investigated the titration of sodium nitrite using 0.1% solution of the gold leaf orange OO (T Трпеодии Ο) solution and 0.15% of the sub-methylene blue solution as the internal indicator: Sodium p-aminosalicylate, benzocaine, , Phenacetin, sulfonamides in sulfonamides and phenacetin in mixed formulations of phenacetin (aspirin, pinaite, caffeine, methyl caffeine). This method can be used in the past to remove the external indicator of sodium nitrite method - potassium iodide starch test strips caused by