DIN 38406-14:1992 德國(guó)檢驗(yàn)水、廢水和污泥的標(biāo)準(zhǔn)方法.陽(yáng)離子(E組).用氣體乙炔火焰原子吸收分光光譜法測(cè)定鈉
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)