DIN 38405-29-1994
德国检验水、废水和污泥的标准方法.阴离子(D组).第29部分:对带磺基水扬酸的硝酸盐进行光谱测定 (D 29); ISO 7890-3:1988、修订版
German standard methods for the examination of water, waste water and sludge - Anions (group D) - Part 29: Spectrometric determination of nitrate with sulfosalicylic acid (D 29); ISO 7890-3:1988, modified