Constructing graphene oxide/Au nanoparticle cellulose membranes for SERS detection of mixed pesticide residues in edible chrysanthemum

文献类型： 外文期刊

第一作者： Zhao, Zhilei

作者： Zhao, Zhilei;Cao, Mingshuo;Cao, Mingshuo;Wei, Dizhe;Wang, Meng;Zhai, Wenlei;Li, Xiangyang

作者机构：

期刊名称：ANALYST （ 影响因子：4.2； 五年影响因子：4.1 ）

ISSN： 0003-2654

年卷期： 2024 年 149 卷 4 期

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收录情况： SCI

摘要： Edible chrysanthemum is widely cultivated and used as an important ingredient of medicine, tea and multifunctional food. During the planting of chrysanthemum, pesticides are extensively used for preventing plant diseases and insect pests. To ensure the food safety of edible chrysanthemum, rapid detection methods are urgently needed for on-site inspection. In this study, a graphene oxide/Au nanoparticle (GO/Au NP) cellulose substrate was prepared through layer-by-layer assembly of GO and Au NPs on a mixed cellulose ester membrane. Surface-enhanced Raman spectroscopy (SERS) detection of four types of organophosphorus and organosulfur pesticides was achieved by filtering the extracting solution through the substrate and analysing SERS spectra. Qualitative and semi-quantitative detection of fenthion, phoxim, isocarbophos and thiram was accomplished with the detection limits of 38.01, 8.13, 48.97 and 8.74 ng mL-1, respectively. A spiking experiment further demonstrated the feasibility of this method for rapid and on-site detection of mixed pesticides in chrysanthemum. This study provides a new approach for rapid detection of multiple hazardous substances in flowering and herbal plants. A GO/Au NP cellulose substrate was constructed through layer-by-layer assembly of graphene oxide and Au nanoparticles on a mixed cellulose membrane. Surface-enhanced Raman spectroscopy detection of 3 pesticides in chrysanthemum was demonstrated.

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