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采用等吸收双波长法测定复方异烟肼中异烟肼的含量,消除了维生素 B_6的干扰。本法简便、准确、重现性好。平均回收率为:99.6%,RSD 为0.4%。本法与溴酸钾法比较,结果无显著性差异(P>0.05)。
Determination of isoniazid in compound isoniazid by the method of isobaric absorption and double wavelength and the interference of vitamin B_6 were eliminated. This method is simple, accurate and reproducible. The average recovery was 99.6% with a RSD of 0.4%. This method and potassium bromate method, the results showed no significant difference (P> 0.05).