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关于氨基比林的含量测定,一般採用酸滴定,但在一些鹼性物与氨基比林同时存在或含氨基比林甚少时,酸滴定法往往不能适用。如成药“复方磺胺噻唑散”(系药房制剂),其处方如下: 磺胺噻唑0.5g 碳酸氫鈉0.5g 氨基比林0.06g 巴比妥0.04g 如用酸滴定法时,上述兩种困难即同时存在,因此我們採用了釩酸銨氧化法,其法如下: 試剂: 1.0.02N硫酸亞铁銨溶液(Mopa鹽溶液):取7.8432g結晶硫酸亞铁銨溶于1升6N
Acid aminometric determination of the general, the use of acid titration, but in some alkaline and aminopyrine simultaneously or with a small number of aminopyrine, acid titration often not applicable. Such as medicine “compound sulfathiazole powder ” (Department pharmacy preparations), the prescription is as follows: Sulfathiazole 0.5g sodium bicarbonate 0.5g aminopyrine 0.06g barbiturate 0.04g When using acid titration, the above two difficulties That is, exist at the same time, so we use the ammonium vanadate oxidation method as follows: Reagents: 1.0.02N ferrous ammonium sulfate solution (Mopa salt solution): Take 7.8432g crystalline ammonium ferrous sulfate was dissolved in 1 liter of 6N