Abstract
Here in we report preparation of MnFe2O4 and magnetic takovite–aluminosilicate adsorbent via precipitation methodology. The synthesized nanocomposite was applied in preconcentration of Pb2+ ions from various matrices. The structural, surface, and magnetic characteristics of the adsorbent were investigated by XRD, EDX, FE-SEM, and VSM techniques. Several parameters affecting preconcentration efficiency, including sample pH, contact time, adsorbent amount, and sample volume were studied and optimized. Under optimized conditions, the calibration graph was linear in the range of 2.0–100μgL−1, the relative standard deviation was 3.00% (n=5), the limit of detection was 0.67μgL−1, and the enrichment factor was 70.0. The maximum adsorption capacity of the adsorbent was calculated to be 69.9mgg−1. The suggested method was successfully applied in determination of trace amount of Pb2+ ions in water and food samples.
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