In this study, for the first time, stainless steel meshes coated with poly(ethylene glycol) and carbon nanotubes (PEG-CNT) by sol-gel technique were used as the adsorbent for solid-phase extraction. The coated stainless steel is loaded onto a cartridge and used to isolate and extract organophosphorus pesticides (OPPs) from water and fruit juice samples. Effective extraction parameters such as sample volume, desorption solvent, and desorption solvent volume were studied and investigated. Under optimal conditions, the linearity of the method was obtained in the range of 0.03 to 80 ng mL-1 and also the limits of detection (LODs) of the method were ranged from 0.01 to 0.03 ng mL-1. The repeatability of the method was evaluated at three concentration levels (0.1, 1, and 50 ng mL-1), and the relative standard deviation (RSD%) of the method was obtained in the range of 3.8 to 4.8%. Finally, the proposed method was used to analysis of OPPs in real water and fruit juice samples, with relative recovery in the range of 94.3 to 99.8%.

中文翻译：

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使用基于溶胶-凝胶的涂层不锈钢网作为新型固相萃取吸附剂，可有效萃取有机磷农药。

在这项研究中，首次将通过溶胶-凝胶技术涂覆有聚乙二醇和碳纳米管（PEG-CNT）的不锈钢网用作固相萃取的吸附剂。涂层的不锈钢被装载到药筒上，用于从水和果汁样品中分离和提取有机磷农药（OPP）。研究和研究了有效的提取参数，例如样品量，解吸溶剂和解吸溶剂量。在最佳条件下，该方法的线性范围为0.03至80 ng mL-1，并且检测限（LOD）为0.01至0.03 ng mL-1。在三个浓度水平（0.1、1和50 ng mL-1）下评估了该方法的可重复性，该方法的相对标准偏差（RSD％）为3.8至4.8％。最终，该方法用于分析真实水和果汁样品中的OPP，相对回收率在94.3％至99.8％之间。