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A portable SERS sensing platform for the multiplex identification and quantification of pesticide residues on plant leaves
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2022-08-18 , DOI: 10.1039/d2tc02926j Cheng Ye 1 , Meng He 1 , Zhengdong Zhu 1 , Xiaoyi Shi 1 , Maofeng Zhang 1 , Zhiyong Bao 2 , Youju Huang 3 , Changlong Jiang 4 , Jianhua Li 5 , Yucheng Wu 2
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2022-08-18 , DOI: 10.1039/d2tc02926j Cheng Ye 1 , Meng He 1 , Zhengdong Zhu 1 , Xiaoyi Shi 1 , Maofeng Zhang 1 , Zhiyong Bao 2 , Youju Huang 3 , Changlong Jiang 4 , Jianhua Li 5 , Yucheng Wu 2
Affiliation
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The rapid identification and quantitative detection of organophosphorus pesticides on a portable device is of vital importance for food safety evaluation and human health protection. However, conventional strategies for realizing the reliable, portable and sensitive detection of target analytes are still challenging. Here, a novel dual-MOF-induced ZnO@Co3O4 heterostructure modified with AgNPs was designed and fabricated as a surface-enhanced Raman scattering (SERS) sensor for the sensitive identification and quantitative analysis of organophosphorus pesticides. The ZnO@Co3O4 heterojunction induced charge transfer enhancement in ZnO@Co3O4@Ag and achieved a 6.6-fold signal amplification compared to that of ZnO@Ag. The synergetic effect of the ZnO@Co3O4 heterostructure and the plasmonic AgNPs together with the molecular preconcentration of the porous structure enabled it to ultrasensitively detect triazophos (10−9 M), fonofos (10−8 M) and thiram (10−7 M) even on a portable Raman instrument. The SERS sensor exhibited superior signal reproducibility with an RSD value less than 8% and long-term stability with a signal loss of only 8.9% after 30 days. Moreover, this SERS platform provided the rapid quantitative analysis of triazophos, fonofos and thiram residues on real samples of tea and dendrobium leaves with LOD values of 10−7 M, 10−6 M and 10−6 M, respectively. In addition, the multiplex detection of pesticides was realized, indicating that our strategy has great potential for quantitative pesticide residue analysis in real samples.
中文翻译：
一种便携式 SERS 传感平台，用于对植物叶片上的农药残留进行多重鉴定和定量
在便携式设备上快速鉴定和定量检测有机磷农药对于食品安全评价和人类健康保护具有重要意义。然而，实现目标分析物的可靠、便携和灵敏检测的传统策略仍然具有挑战性。在这里，设计并制造了一种新型的双 MOF 诱导的用 AgNPs 修饰的 ZnO@Co 3 O 4异质结构作为表面增强拉曼散射 (SERS) 传感器，用于对有机磷农药进行灵敏识别和定量分析。ZnO@Co 3 O 4异质结诱导的 ZnO@Co 3 O 4中的电荷转移增强@Ag 与 ZnO@Ag 相比实现了 6.6 倍的信号放大。ZnO@Co 3 O 4异质结构和等离子体 AgNPs 的协同作用以及多孔结构的分子预富集使其能够超灵敏地检测三唑磷 (10 -9 M)、fonofos (10 -8 M) 和福美双 (10 - 7 M) 甚至在便携式拉曼仪器上。SERS 传感器表现出优异的信号再现性，RSD 值小于 8%，长期稳定性，30 天后信号损失仅为 8.9%。此外，该 SERS 平台可快速定量分析 LOD 值为 10 -7的茶叶和石斛叶实际样品中的三唑磷、甲硫磷和福美双。M、10 -6 M 和 10 -6 M 分别。此外，实现了农药的多重检测，表明我们的策略在实际样品中农药残留定量分析方面具有巨大潜力。
更新日期：2022-08-18
中文翻译：
一种便携式 SERS 传感平台，用于对植物叶片上的农药残留进行多重鉴定和定量
在便携式设备上快速鉴定和定量检测有机磷农药对于食品安全评价和人类健康保护具有重要意义。然而，实现目标分析物的可靠、便携和灵敏检测的传统策略仍然具有挑战性。在这里，设计并制造了一种新型的双 MOF 诱导的用 AgNPs 修饰的 ZnO@Co 3 O 4异质结构作为表面增强拉曼散射 (SERS) 传感器，用于对有机磷农药进行灵敏识别和定量分析。ZnO@Co 3 O 4异质结诱导的 ZnO@Co 3 O 4中的电荷转移增强@Ag 与 ZnO@Ag 相比实现了 6.6 倍的信号放大。ZnO@Co 3 O 4异质结构和等离子体 AgNPs 的协同作用以及多孔结构的分子预富集使其能够超灵敏地检测三唑磷 (10 -9 M)、fonofos (10 -8 M) 和福美双 (10 - 7 M) 甚至在便携式拉曼仪器上。SERS 传感器表现出优异的信号再现性，RSD 值小于 8%，长期稳定性，30 天后信号损失仅为 8.9%。此外，该 SERS 平台可快速定量分析 LOD 值为 10 -7的茶叶和石斛叶实际样品中的三唑磷、甲硫磷和福美双。M、10 -6 M 和 10 -6 M 分别。此外，实现了农药的多重检测，表明我们的策略在实际样品中农药残留定量分析方面具有巨大潜力。
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