ISO 4052-1983 标准详情
- 标准号:ISO 4052-1983
- 中文标题:咖啡 咖啡碱含量的测定(参照法)
- 英文标题:Coffee; Determination of caffeine content (Reference method)
- 标准类别:国际标准化组织标准ISO
- 发布日期:1983-06
The method consists in extracting of the caffeine from a test portion, in an ammoniacal medium, successive purifying, with diethyl ether, on two chromatographic columns, the first in an alkaline medium, the second in an acid medium, followed by eluti
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