Abstract：
Pesticide residues in agricultural products are serious threat to people\'s health. Real-time monitoring of pesticides residues in the environment and agricultural products posed challenges to sustainable methods with high analytical performance for pesticide detection. Herein, waste PVC/coal fly ash (the mass ratio of PVC and coal fly ash was 4:1) was dechlorinated in subcritical water at low temperature to achieve nearly 100 % dechlorination of PVC and obtain carbon-based composite materials (CM-Fe/Al/Si-dPVC) with strong sening activity. For CM-Fe/Al/Si-dPVC, CFe bonding resulted in strong electron migration, and nano/μm SiO2 and Al2O3 doping in the layered polyene C matrix provided large specific surface area, and silicon hydroxyl created good heterogeneous catalytic interfaces. CM-Fe/Al/Si-dPVC could strongly trigger luminol chemiluminescence (CL) reaction and produce intense CL signals. Neonicotinoid pesticides (acetamiprid and imidacloprid) bonded with CM-Fe/Al/Si-dPVC through coordination chelation and hydrogen bonding, which shielded the catalytic active site and increased the Fermi level of system, thus quenching CL reaction. Inspired by these, a cheap CL assay was constructed for detecting neonicotinoids combinations of acetamiprid and imidacloprid (NICs). The detection limits of NICs were 0.7 ng/L. Satisfactory recoveries were obtained for real agricultural products and environmental samples. The results of life cycle evaluation (LCA) revealed that the strategy had significantly small global warming potential (GWP). This work presented a sustainable method with environmental benefits for the detection of neonicotinoids, and also opened up new way for the recycling of organic solid wastes.
摘要：
农产品中的农药残留严重威胁着人们的身体健康。环境和农产品中农药残留的实时监测对具有高分析性能的可持续农药检测方法提出了挑战。在这里，将废弃的PVC/粉煤灰(PVC与粉煤灰的质量比为4:1)在亚临界水中低温脱氯，实现PVC近100%的脱氯，得到具有较强脱氯活性的碳基复合材料(CM-Fe/Al/Si-dPVC)。对于CM-Fe/Al/Si-dPVC，CFe键合导致强电子迁移，和纳米/μmSiO2和Al2O3掺杂在层状多烯C基体中提供了大的比表面积，和硅羟基形成了良好的非均相催化界面。CM-Fe/Al/Si-dPVC可以强烈触发鲁米诺化学发光（CL）反应并产生强烈的CL信号。新烟碱类农药（啶虫脒和吡虫啉）通过配位螯合和氢键与CM-Fe/Al/Si-dPVC键合，屏蔽了催化活性位点，提高了系统的费米能级，从而猝灭CL反应。受这些启发，构建了一种廉价的CL检测方法,用于检测啶虫脒和吡虫啉(NIC)的新烟碱类组合.NIC的检出限为0.7ng/L。实际农产品和环境样品的回收率令人满意。生命周期评估（LCA）的结果表明，该策略的全球变暖潜势（GWP）明显较小。这项工作提出了一种具有环境效益的可持续方法，用于检测新烟碱，也为有机固体废物的回收利用开辟了新途径。
