溶剂萃取原子捕集测定水样中的砷(Ⅲ)和砷(Ⅴ)

Determination of As(Ⅲ) and As(Ⅴ) in Water with Solvent Extraction by Atom Trapping

本实验研究了水样中的砷(Ⅲ)和砷(Ⅴ)在APDC-CHCl_3体系中的选择性萃取和反萃取,并用缝管原子捕集技术结合火焰原子吸收法,通过二步萃取,测定了水样中的砷(Ⅲ)和砷(Ⅴ)。

The selective extraction and back-extraction of As (Ⅲ) and As (Ⅴ) in water samples withAPDC-CHCl have been investugated. The As (Ⅲ) and As (Ⅴ) in water samples have been de-termined with two-step extraction by slotted tube atom trapping technique and flame atomicabsorption spectrometry.