An efficient PCN-224/graphene aerogel-based extraction method for monitoring the degradation of organophosphorus pesticides in juice

IF 3.8 2区化学 Q1 BIOCHEMICAL RESEARCH METHODS Journal of Chromatography A Pub Date : 2024-11-02 DOI:10.1016/j.chroma.2024.465500

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Abstract

An efficient PCN-224/graphene aerogel modified silica (PCN-224/GA@Sil)-based extraction method was established for monitoring the degradation process of two organophosphorus pesticides (OPPs) in juice. PCN-224/GA@Sil exhibited higher surface area (307.35 m² g^-1) than graphene oxide modified silica (254.09 m² g^-1). The introduction of PCN-224 endowed the sorbent with excellent adsorption specificity towards OPPs due to the ZrˑˑˑS/O coordination bond. PCN-224 exhibited relatively higher theoretical adsorption energies of PCN-224 towards fenitrothion and fenthion were 0.68 eV and -0.31 eV. The established PCN-224/GA@Sil-HPLC method showed the linearity of 0.2–500 μg L^-1 for analytes. The matrix effects in juice were 9.68 % and 3.61 % for fenitrothion and fenthion. Finally, it was used for the sample pretreatment of juice preventing interference from food matrices to monitor the degradation of two OPPs. A combination method of ultrasound and xenon lamp was adopted to degrade fenitrothion and fenthion displaying the synergistic effect (SE=2.12, 1.39).

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基于 PCN-224/ 石墨烯气凝胶的高效萃取法监测果汁中有机磷农药的降解情况

建立了一种基于PCN-224/石墨烯气凝胶修饰二氧化硅（PCN-224/GA@Sil）的高效萃取方法，用于监测果汁中两种有机磷农药（OPPs）的降解过程。PCN-224/GA@Sil 的比表面积（307.35 m2 g-1）高于氧化石墨烯修饰的二氧化硅（254.09 m2 g-1）。由于 ZrˑˑˑS/O 配位键的作用，PCN-224 的引入使吸附剂对 OPPs 具有极佳的吸附特异性。PCN-224 对杀螟硫磷和倍硫磷的理论吸附能相对较高，分别为 0.68 eV 和 -0.31 eV。PCN-224/GA@Sil-HPLC方法的线性范围为0.2～500 μg L-1。果汁中杀螟硫磷和倍硫磷的基质效应分别为 9.68 % 和 3.61 %。最后，该方法被用于果汁样品的预处理，以防止食物基质的干扰，从而监测两种 OPPs 的降解情况。采用超声波和氙灯组合方法降解杀螟松和倍硫磷显示出协同效应（SE=2.12，1.39）。

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来源期刊

Journal of Chromatography A 化学-分析化学

CiteScore

7.90

自引率

14.60%

发文量

742

审稿时长

45 days

期刊介绍： The Journal of Chromatography A provides a forum for the publication of original research and critical reviews on all aspects of fundamental and applied separation science. The scope of the journal includes chromatography and related techniques, electromigration techniques (e.g. electrophoresis, electrochromatography), hyphenated and other multi-dimensional techniques, sample preparation, and detection methods such as mass spectrometry. Contributions consist mainly of research papers dealing with the theory of separation methods, instrumental developments and analytical and preparative applications of general interest.