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在分光光度法中,用解联立方程组法分析复方制剂中两组分含量时,需求测吸收系数,测定受仪器性能等的影响,带入的误差较大,笔者采用联立方程组新解法,以吸收度比代替吸收系数的测定,分析复方磺胺甲(?)唑片剂中 SMZ、TMP 二组分含量,得到较满意的结果。与药典方法比较,方法简便,相对误差不大于1.5%(SMZ)、2.0%(TMP)。1 方法原理设复方制剂中互相干扰的两组分为 a、b,则(?)
In the spectrophotometric method, the simultaneous equations set method is used to analyze the content of the two components in the compound preparation, the measured absorption coefficient is needed. The measurement is affected by the instrument performance and so on. The error brought in is large. The author adopts the new solution method of simultaneous equations to absorb Degree ratio instead of the determination of absorption coefficient, analysis of compound sulfamethoxazole tablets SMZ, TMP two component content, get more satisfactory results. Compared with the pharmacopoeia method, the method is simple, the relative error is not more than 1.5% (SMZ), 2.0% (TMP). Principle of a method set up the two components of the compound preparations interfere with each other, a, b, (?)