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盐酸硫胺的含量测定方法常用的有硅钨酸重量法、荧光法、非水滴定法、银量法、各种比色法及分光光度法等。其中硅钨酸重量法已被中国药典(1977版)所收载,此法试剂易得,结果准确,但操作繁锁、费时。我们根据pH吸收度比值法的原理[姜心如译.国外医学参考
Hydrothiamine content determination methods commonly used silicotungstic acid gravimetric method, fluorescence method, non-aqueous titration method, the amount of silver method, a variety of colorimetric and spectrophotometric methods. One silicotungstic acid gravimetric method has been China Pharmacopoeia (1977 Edition) contained, this method is easy to get the reagent, the result is accurate, but cumbersome and time-consuming operation. We based on the principle of pH absorbance ratio method [Jiang Xinru translation