本文介结利用偶氮反应以光电比色法测定奴佛卡因、乙酰磺胺纳和磺胺。以硫酸8-羟基喹啉作为偶氮染料的第二个组成,因为用它可以得到颜色鲜明、易溶于水,而且十分稳定的偶氮化合物。试剂的浓度是:0.1 N 盐酸溶液,0.001 M 亚硝酸钠溶液,0.05%硫酸8-羟基喹啉溶液,和0.1 N 苛性钠溶液。重氮化和偶合作用在室温进行。反应所获得的偶氮化合物能稳定地保存很长的时间(磺胺—2小时,奴佛卡因和乙酰磺胺钠——一书夜以上)。本方法的准确度可达±5%。磺胺和乙酰璜胺鈉的測定子絨:於0.0,95磺胺溶液(0.02—0.0ml)或0.05%乙酰磺胺钠溶液(0.05—0.09 ml)中加入0.25 ml 盐酸和0.5 ml 亚硝酸钠溶液,摇动2分钟,加0.3 ml 硫酸8-羟基喹啉溶液,0.5 ml 苛性钠溶液,用水稀释至10 ml。 This article describes the use of azo reaction photometric colorimetric Determination of novocaine, acesulfame sodium and sulfonamides. The second component of 8-hydroxyquinoline sulfate is used as the azo dye, because it can be used to obtain azo compounds that are brightly colored, easily soluble in water, and very stable. Reagent concentrations were: 0.1 N hydrochloric acid solution, 0.001 M sodium nitrite solution, 0.05% sulfuric acid 8-hydroxyquinoline solution, and 0.1 N caustic soda solution. Diazotization and coupling are performed at room temperature. The azo compounds obtained in the reaction are stably stored for a long time (sulfonamide - 2 hours, novocaine and acesulfame sodium - one night or more). The accuracy of this method can be up to ± 5%. Sulfonamides and Acetylsulfanamine Determination Sub-cashmere: 0.25 ml of hydrochloric acid and 0.5 ml of sodium nitrite solution are added to a solution of 0.0,95 sulfanilamide (0.02-0.0 ml) or 0.05% acesulfame sodium (0.05-0.09 ml) with shaking 2 minutes, add 0.3 ml sulfuric acid 8-hydroxyquinoline solution, 0.5 ml caustic soda solution, diluted with water to 10 ml.