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编辑同志: 你报2卷8期刊登的葛鎮生同志摘自J. Pharm,Pharmacol.“L-抗坏血酸含量测定新法”一文中,曾述及当鹽酸硫胺与維生素丙同时存在时,就不能用碘滴定法测定維生素丙的含量。經过我們試驗,認为原作者的說法是不可靠的。因为当維生素丙与鹽酸硫胺同时存在时,維生素丙与碘的作用較鹽酸硫胺强,首先被还原,而鹽酸硫胺与碘液产生类似生物鹼沉淀的反应,但此反应又不如淀粉与碘作用来得敏
Editor’s comrade: You reported 2 Volume 8, published by Comrade Ge Zhensheng from J. Pharm, Pharmacol. “” Determination of L-ascorbic acid content "article, it was mentioned that when thiamine hydrochloride and vitamin C co-exist, they can not be used Determination of Vitamin C by Iodometric Titration. After our experiment, I think the original author’s statement is not reliable. Because when the vitamin C and thiamine hydrochloride exist, the role of vitamin C and iodine stronger than thiamine hydrochloride, the first reduction, and thiamine hydrochloride and iodine similar alkaloid precipitation reaction, but this reaction is not as good as starch and Iodine role to be sensitive