first order derivative

基本解释

The content of etoposide injection was determined by first order derivative spectrophotometry.
用一堦導數光譜法測定足葉乙甙注射液的含量。
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：採用一堦導數分光光度法和雙波長光譜法測定各配伍液中頭孢噻肟鈉和西咪替丁的含量。
The determination of norfloxacin in compound norfloxacin ear drops by first order derivative UV spectrophotometry needed no separation and was simple, rapid, and accurate.
採用一堦導數分光光度法測定複方滴耳液中諾氟沙星的含量，樣品不須分離，方法簡便，結果滿意。