Ascorbic acid and ammonium dihydrogen phosphate solution were used as the matrix modifier. 采用抗坏血酸和磷酸二氢铵作混合基体改进剂，热解涂层石墨管，塞曼扣背景。
In this paper, a method is described for the determination of Ph and Cd in sea water using Zeeman GFAAS with HNO3 as a Matrix modifier. 本文叙述以硝酸作基体改进剂，塞曼效应石墨炉原子吸收光谱测定海水中铅和镉的实验方法。
