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
German standard methods for the examination of water, waste water and sludge; cations (group E); determination of sodium by atomic absorption spectrometry (ASS) using an air-acetylene flame (E 14)