标准摘要
[中文适用范围]： 本标准规定了格里斯反应（酶促还原）后用分子吸收光谱法测定乳和乳制品中硝酸盐含量的方法。 该方法特别适用于全脂奶、部分脱脂奶、脱脂奶和奶粉、硬质奶酪、半硬质奶酪和软质奶酪、加工奶酪、乳清奶酪、酪蛋白、酪蛋白酸盐、干乳清和浓缩乳蛋白。 该方法可以在对应于样品溶液中测量浓度（减去空白）大于0.2mg/l的情况下使用。 [外文原描述]： ISO 20541|IDF 197:2008 specifies a method for the determination of the nitrate content of milk and milk products by molecular-absorption spectrometry after Griess reaction (preceded by enzymatic reduction). The method is, in particular, applicable to whole, partly skimmed, skimmed and dried milk, hard, semi-hard and soft cheeses, processed cheese, whey cheese, caseins, caseinates, dried whey and milk protein concentrates. The method can be used at contents corresponding to a measured concentration in the sample solution (with blank subtracted) of more than 0,2 mg/l.
英文名称Milk and milk products — Determination of nitrate content — Method by enzymatic reduction and molecular-absorption spectrometry after Griess reaction