Extraction and Determination of Heavy Metals Using Silver Coated Magnetic Nanoparticles and Flame Atomic Absorption Spectrometry

A rapid, simple and sensitive magnetic solid phase extraction (mspe) method was developed forthe pre-concentration and determination of copper and cadmium ions. in this study, modifiedfe3o4@ag nanoparticles were synthesized and then ligand 2-isonicotinoyl hydrazinecarbodithiolate (ithcdt) was bonded to silver due to the formation of covalent bond of s-ag. inthis method, copper and cadmium ions were absorbed on the sorbent and then eluted by 1 ml ofhcl (2 mol l^-1) and measured by faas. different effective parameters such as ph, eluent type andvolume, amount of sorbent, sorption capacity, contact time were investigated and optimized.relative standard deviation (rsd, n=7) under optimum condition for cd (ii) and cu(ii) was 1.23%and 1.67%, respectively. limit of detection (lod) of the method for cadmium and copper was 0.87and 0.51 μg l^-1, respectively. the proposed method was successfully applied for the determinationof trace amounts of copper and cadmium ions in water samples.