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现行 ISO 3091:1975
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Meat and meat products — Determination of nitrate content (Reference method) 肉类和肉制品——硝酸盐含量的测定(参考法)
发布日期: 1975-09-01
该方法包括用热水提取供试品,沉淀蛋白质并过滤。用金属镉将提取的硝酸盐还原成亚硝酸盐。通过添加磺胺和盐酸萘乙二胺形成红色,并在538 nm波长下进行光度测量。
The method consists in extracting of a test portion with hot water, precipitating of proteins and filtrating. Reduction of the extracted nitrates into nitrites by metallic cadmium. Formation of a red colouration by adding of sulfanilamide and nphthyl ethylenediamine hydrochloride and photometric measurement at a wavelength of 538 nm.
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归口单位: ISO/TC 34/SC 6
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