ISO 937-1978 标准详情
- 标准号:ISO 937-1978
- 中文标题:肉和肉制品 氮含量的测定(参照法)
- 英文标题:Meat and meat products; Determination of nitrogen content (Reference method)
- 标准类别:国际标准化组织标准ISO
- 发布日期:1978-12
The method consists in digesting of a test portion with concentrated sulphuric acid, using copper(II) sulphate as a catalyst, to convert organic nitrogen to ammonia ions. Then alkalisation, distillation of the liberated ammonia into an excess of bori
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