DIN 38406-14-1992 德国检验水、废水和污泥的标准方法.阳离子(E组).用气体乙炔火焰原子吸收分光光谱法测定钠
The document describes a chemical method for the determination of potassium in water by atomic absorption spectrometry (AAS). The measurement of the potassium-ions is taken in the air-acetylene flame.