目的建立差示分光光度法测定异烟肼注射液中游离肼的方法。
Objective to establish a method to determine free hydrazine in isoniazid injection by difference spectrophotometry.
方法采用体外透皮吸收实验方法和差示分光光度法测定透过液中扑热息痛的吸收度。
Methods Paracetamol absorption value in penetration liquid was mensurated with skin penetration abs orb in vitro test method and difference spectrophotometry.
根据二氧化氯可氧化二甲酚橙、氯酚红使其褪色的特性，可用示差分光光度法测定水中低浓度二氧化氯的含量。
The low concentration of chlorine dioxide in water can be determined by spectrophotometry based on the chlorine dioxide can decolor and oxidize xylenol orange and chlorophenol red.
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