The content of etoposide injection was determined by first order derivative spectrophotometry.
用一阶导数光谱法测定足叶乙甙注射液的含量。
METHODS: to test the contents of cefotaxime sodium and cimetidine in all kinds of infusions using first order derivative and double wavelength spectrophotometry.
方法：采用一阶导数分光光度法和双波长光谱法测定各配伍液中头孢噻肟钠和西咪替丁的含量。
The determination of potassium guaiacolsulfonate in Shangfeng Zhike granules by first order derivative UV-spectrophotometry needed no separation and was simple, rapid, and accurate.
采用一阶导数分光光度法测定伤风止咳冲剂中愈创木酚磺酸钾的含量，不须分离，方法简便，结果满意。
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