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磺胺类药物的法定測定法迄今仍用外指示剂的重氮化法。但此法操作紧张,終点难以掌握。为此,近年来許多分析工作者曾致力于內指示剂的研究工作。苏联文献曾报导以金蓮花色精00和亚甲蓝的混合液作內指示剂以亚硝酸鈉法滴定了合霉素、对氨基水杨酸鈉和非那西汀等药物,得到良好結果。笔者曾試用于磺胺脒片的測定,結果令人滿意,其平均标准偏差不超过±0.3%。茲将其
The statutory determination of sulfa drugs so far still use the outer indicator diazotization method. However, this method of operating tension, the end is difficult to grasp. For this reason, many analysts have been working on the research of internal indicators in recent years. The Soviet literature has reported that the combination of gold lotus color 00 and methylene blue as an internal indicator titration of sodium nitrite tetracycline, sodium salicylate and phenacetin and other drugs, and get good results. I have tried in the determination of sulfamitidine tablets, the results were satisfactory, the average standard deviation of not more than ± 0.3%. It will be