Contents of vinylidene chloride, acetonitrile, carbon tetrachloride and hexachloropropane in the raw hexachloropropane are determined by gas chromatography.

• 采用气相色谱双内标法定量,测定六氯丙烷粗产品中偏氯乙烯、乙腈、四氯化碳和六氯丙烷的含量。