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本法用丙酮、正己烷提取及浓硫酸纯化后用气相色谱测定牛奶中对酸稳定的DDT和六六六,该法简易、快速、经济、重现性好。
The method is simple, rapid, economical and reproducible with acetone, n-hexane extraction and concentrated sulfuric acid purification, and the determination of acid stable DDT and BHC in milk by gas chromatography.