Abstract
Residual fipronil and its degradation products in chicken eggs are crucial issues in food safety. A stir bar sorptive extractor was developed by employing a pleated stainless steel (SS) net covered with hydrothermal synthesized zinc oxide (ZnO) nanostructure and dip-coated polystyrene (PS) from plastic foam waste. The combination of a PS/ZnO/SS stir bar extraction followed by gas chromatography detection with an electron capture detector yields a highly feasible process for the inspection of residual fipronils in chicken eggs with a linear range of 0.10–150 μg kg−1 and detection limit of 0.07–0.41 μg kg−1 with high recoveries (87.0 ± 2.4 to 95.2 ± 2.5%) and good precision (2.1–9.6% RSDs). The developed PS/ZnO/SS stir bar could be reused up to nine times. Its main advantages are simplicity of preparation, low-cost materials, and efficient utilization of PS waste.
Published Version
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