Abstract
In this work, a novel method is described for the preconcentration of Pb 2+ , Cd 2+ and Zn 2+ ions in environmental samples using uniform silanized mesopor (LUS-1) functionalized by ethylenediamine groups as a new extractant. The determination of ions is done by inductively coupled plasma optical emission spectrometry (ICPOES). The extraction time and efficiency, pH and amount of adsorbent, minimum amount of stripping acid and break-through volume were investigated. The method’s enrichment factor is100 and detection limit is 0.45, 0.05 and 0.03 ng mL -1 for Pb 2+ , Cd 2+ and Zn 2+ respectively. The maximum capacity of the one mg of functionalized LUS-1 was found to be 150.0 (±2.0) µg and 93.0 (±1.7) µg and 125.0 (±1.2) µg of Pb 2+ , Cd 2+ and Zn 2+ respectively. The method was applied successfully for the preconcentration and determination of trace amounts of Pb 2+ , Cd 2+ and Zn 2+ in water and food samples.
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