A sensitive analytical method for the determination of copper at trace levels with Sb2O4 nanoparticles based dispersive solid phase extraction

Abstract

This study presents antimony oxide nanoparticles (AO-NPs)-based dispersive solid phase extraction (DSPE) method for the determination of copper ions in lavender tea matrices with high sensitivity and accuracy at trace levels by flame atomic absorption spectrometry (FAAS) system. AO-NPs used as sorbent material were produced by microwave-assisted synthesis method by setting a defined temperature program. Limit of detection (LOD) value was calculated as 0.41 mu g L-1 under optimal operating conditions. Linearity was obtained in the range of 2.5-40 mu g L-1. Increase in detection power/sensitivity were calculated based on LOD values of FAAS and AO-NP-DSPE-FAAS systems and the slopes of the calibration plot equations and were found to be 169.4 and 123.1, respectively. The recovery results in lavender tea matrices recorded in the range of 103 %-118.2 % by employing the matrix matching calibration strategy indicated that the presented method is feasible for lavender tea and similar matrices.