Solid-phase Chelate Extractive Preconcentration of Heavy Metal Ions Prior to Their Ultratrace Determination by Microsample Injection System Coupled Flame Atomic Absorption Spectrometry

摘要

A Chromosorb-105 resin/1-(2-pyridylazo)-2-naphthol (PAN) system was developed for solid phase chelate extractive preconcentration of heavy metal ions. The metal ions on Chromosorb-105 resin column were eluted with 3.0 mL of 2.0 mol L–1 HNO3 and determined