ISO 20541:2008 乳和乳制品 硝酸盐含量的测定 Griess反应后用酶还原和分子吸收光谱法

标准编号：ISO 20541:2008

中文名称：乳和乳制品 硝酸盐含量的测定 Griess反应后用酶还原和分子吸收光谱法

英文名称：Milk and milk products — Determination of nitrate content — Method by enzymatic reduction and molecular-absorption spectrometry after Griess reaction

发布日期：2008-09

标准范围

ISO 20541 |IDF 197:2008规定了在Griess反应后（酶还原之前），通过分子吸收光谱法测定牛奶和奶制品中硝酸盐含量的方法。该方法尤其适用于全脂、部分脱脂、脱脂和奶粉、硬奶酪、半硬奶酪和软奶酪、加工奶酪、乳清奶酪、酪蛋白、酪蛋白酸盐、乳清和乳蛋白浓缩物。该方法可用于样品溶液（减去空白）中测量浓度大于0.2 mg/l的含量。

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.

标准预览图