Abstract
ABSTRACTA simple and fast method based on solid phase extraction (SPE) applying zinc oxide (ZnO) nanoparticles and atomic absorption spectrometry (AAS) was developed for the trace amount determination of silver (Ag) in aqueous samples. The method linearity was in the range of 14 to 700 ng mL−1. The extraction efficiency of Ag was greater than 98% and limit of detection (LOD) was 4.2 ng mL−1. The preconcentration factor was 200 and the relative standard deviation (RSD%) of the method was 3.7% (n = 6).
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