Preparation of ECH-PCCB for the Pre-concentration and Determination of Cadmium (II) Ions Prior to FAAS by FIA

Abstract

In this study, ECH-PCCB structures were used for the first time as mini-column filling material in a FIA added to the AAS for the pre-concentration of cadmium ions. This method is simple, accurate and highly selective for pre-concentration of Cd(II) in water samples. Surface analysis of ECH-PCCB was performed by scanning electron microscopy. Elution of Cd(II) ions from the column was achieved with 0.1 mol L-1 EDTA. Some parameters affecting the pre-concentration of Cd(II) ions, such as sample loading time, sample flow rate, eluent type and concentration, pH, and interference ions were investigated. Under the optimized parameters, the enrichment factor was 23 and the detection limit of the method was 16 µg L-1 as a result of pre-concentration studies with ECH-PCCB.