动物饲料 钾和钠含量的测定 火焰发射分光光度法

[中文适用范围]： 本标准规定了火焰发射光谱法测定动物饲料中钾、钠含量的校准方法和加标法。 如果不知道钾或钠的排放量是否受基质效应影响，则适用标准添加法。 钾和钠的测定限为 0.04 g/kg。 如果已证明不存在这种基体效应，则适用校准方法。 [外文原描述]： This International Standard specifies a calibration method and a standard addition method for the determination of potassium and sodium contents of animal feeding stuffs by flame-emission spectrometry. The standard addition method applies if it is not known whether the emissions measured for potassium or sodium are subject to matrix effects. The limit of determination for potassium and sodium is 0,04 g/kg. The calibration method applies if such matrix effects have been shown to be absent.