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树脂结合金纳米复合材料辅助表面增强/衰减全反射傅里叶变换红外光谱法用于检测蔬菜样品中的吡虫啉杀虫剂。

Resin bound gold nanocomposites assisted SE/ATR-FTIR spectroscopy for detection of pymetrozine insecticide in vegetable samples.

作者信息

Saha Anushree, Kurrey Ramsingh, Deb Manas Kanti

机构信息

Department of Chemistry, Kalinga University, Naya Raipur, Chhattisgarh, India.

School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, 492 010, Chhattisgarh, India.

出版信息

Heliyon. 2024 Sep 14;10(18):e37856. doi: 10.1016/j.heliyon.2024.e37856. eCollection 2024 Sep 30.

DOI:10.1016/j.heliyon.2024.e37856
PMID:39347409
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11437939/
Abstract

The goal of this work was to assess the competence of organic hydrophobic resin bound gold nanocomposites (OH/R-AuNCs) for detection of pymetrozine insecticide from vegetable samples employing surface-enhanced/attenuated total reflectance-Fourier transform infrared (SE/ATR-FTIR) spectroscopy. The adsorption isotherm models, including the Langmuir, Freundlich and Temkin, are tested to reveal the interactive behaviour between the OH/R-AuNCs and pesticide. The adsorption occurs principally by London-Van der Waals dispersion interactions and hydrogen bonding interactions between the surface of OH/R-AuNCs materials and the hydrophobic part of pesticide molecule. The characteristic absorption band obtained at 3019.94 cm was utilized for the quantitative analysis of pymetrozine insecticide in vegetable samples. The method was found to be accurate and precise, with mean recovery values in the range of 94.5-110 %, correlation coefficient of 0.992 %, and detection limit of 2.65 μg mL. The adsorption efficiency of the designed OH/R-AuNCs significantly influences the SE/ATR-FTIR response of the pymetrozine around 90 %. The optimized and validated method was applied to determine the residual concentrations of the pymetrozine that had been applied to vegetable samples.

摘要

这项工作的目标是评估有机疏水树脂结合金纳米复合材料（OH/R-AuNCs）利用表面增强/衰减全反射傅里叶变换红外光谱（SE/ATR-FTIR）从蔬菜样品中检测吡虫啉杀虫剂的能力。测试了包括朗缪尔、弗伦德利希和坦金在内的吸附等温线模型，以揭示OH/R-AuNCs与农药之间的相互作用行为。吸附主要通过OH/R-AuNCs材料表面与农药分子疏水部分之间的伦敦-范德华色散相互作用和氢键相互作用发生。在3019.94 cm处获得的特征吸收带用于蔬菜样品中吡虫啉杀虫剂的定量分析。该方法被发现准确且精确，平均回收率在94.5-110%范围内，相关系数为0.992%，检测限为2.65 μg/mL。设计的OH/R-AuNCs的吸附效率对吡虫啉在90%左右的SE/ATR-FTIR响应有显著影响。将优化和验证后的方法应用于测定施用于蔬菜样品中的吡虫啉残留浓度。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/d261f9e97873/gr10.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/6ce201d0bec5/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/2f2b29e1a49b/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/9826bc4e786c/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/ba00e037c90f/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/999bcf90639e/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/418af2af61d7/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/923d5702c054/gr8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/12290896100c/gr9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/d261f9e97873/gr10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/5bd09dd4f1a1/ga1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/f2e76850309c/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/6ce201d0bec5/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/2f2b29e1a49b/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/9826bc4e786c/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/ba00e037c90f/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/999bcf90639e/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/418af2af61d7/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/923d5702c054/gr8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/12290896100c/gr9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0da1/11437939/d261f9e97873/gr10.jpg

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