Objective: Establishing a method called headspace gas chromatography to determine the remained organic solvent of ethyl alcohol, acetone and ethyl acetate in the drug substance cefotaxime sodium.

• 目的:建立一种顶空气相色谱法测定原料药头孢噻肟钠中乙醇,丙酮,乙酸乙酯三种有机溶剂残留量。