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复方新诺明片是由磺胺甲吐（Sulfmethoxa-zole，SMZ）和甲氧节氨嘧啶（Trimethorim，TMP）制成的复方制剂。《中国药典》1990年版二部[1]中应用双波长法测定含量，其方法操作较为繁琐。本文应用观波长法测定的新计算法［2］来计算SMZ和TMP的含量，用待测组分吸收值代替凸A计算
Cotrimoxazole is a combination of Sulfmethoxa-zole (SMZ) and Trimethorim (TMP). “Chinese Pharmacopoeia” 1990 edition of two [1] dual wavelength method for the determination of content, the method of operation is more complicated. In this paper, the new method of calculating the wavelength of observation method [2] to calculate the content of SMZ and TMP, with the absorption of the measured component instead of convex A calculation