[HG-AFS determination of ultratrace Pb and Hg in underground water after sulfhydryl cotton preconcentration].

The condition of simultaneous preconcentration of Pb and Hg by sulfhydryl cotton, the eluting condition, the determination condition of Pb and Hg by hydride generation AFS and the influence of interference elements were discussed. Then, the method for the determination of ultratrace lead and mercury in the underground water was obtained, and the method is sensitive and reliable. The experiment results show that all of the indexes of this method can satisfy the analysis of the underground water.