A novel paper rag as ‘D-SERS’ substrate for detection of pesticide residues at various peels

Zhu, Yiqun; Li, Minqiang; Yu, Daoyang; Yang, Liangbao

doi:10.1016/j.talanta.2014.04.066

Cited by 136 publications

(71 citation statements)

References 41 publications

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“…[27][28][29][30][31][32][33][34][35][36][37] One of the important applications of these magnetic SERS substrates is to detect pesticide residues on vegetables and fruit peels due to the fingerprint and high sensitivity provided by SERS. 38 However, in order to enrich analytes, pesticide molecules that have penetrated into the peels are preliminary extracted out of peel surface by ethanol for 1-2 h, [39][40][41] which is far away from the requirement of rapid detections and lies in the same time stage as HPLC (or HPLC-MS).…”

mentioning

confidence: 99%

“…Raman Shift (cm -1 ) 40 μg/cm To test the specificity of the method, parathion-methyl and mancozeb were detected separately by the same detection procedure for thiram. As shown in Fig.…”

mentioning

confidence: 99%

“…Correspondingly, the latter strategy is time-consuming and the detection displays a low sensitivity. On the other hand, the SMSPE is a very simple and rapid pretreatment technique, which accelerates the complicate pretreatment process and avoids the long-time preliminary extraction and the complete evaporation in the other approaches 39,40. SERS measurements of pesticide residues.…”

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confidence: 99%

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Fe₃O₄@Graphene Oxide@Ag Particles for Surface Magnet Solid-Phase Extraction Surface-Enhanced Raman Scattering (SMSPE-SERS): From Sample Pretreatment to Detection All-in-One

Liu

Wang

Deng

et al. 2016

ACS Appl. Mater. Interfaces

115

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A multifunctional magnetic graphene surface-enhanced Raman scattering (SERS) substrate was fabricated successfully by the layer-by-layer assembly of silver and graphene oxide (GO) nanoparticles (NPs) on the magnetic ferroferric oxide particles (Fe3O4@GO@Ag). This ternary particle possesses magnetic properties, SERS activity, and adsorption ability simultaneously. Owing to the multifunction of this Fe3O4@GO@Ag ternary complex, we put forward a new method called a surface magnetic solid-phase extraction (SMSPE) technique, for the SERS detections of pesticide residues on the fruit peels. SMSPE integrates many sample pretreatment procedures, such as surface extraction, separation sample, and detection, all-in-one. So this method shows great superiority in simplicity, rapidity, and high efficiency above other standard methods. The whole detection process can be finished within 20 min including the sample pretreatment and SERS detection. Owing to the high density of Ag NPs, the detection sensitivity is high enough that the lowest detectable concentrations are 0.48 and 40 ng/cm(2) for thiram and thiabendazole, which are much lower than the maximal residue limits in fruit prescribed by the U.S. Environmental Protection Agency. This multifunctional ternary particle and its corresponding analytical method have been proven to be applicable for practical samples and also valuable for other surface analysis.

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mentioning

confidence: 99%

“…Raman Shift (cm -1 ) 40 μg/cm To test the specificity of the method, parathion-methyl and mancozeb were detected separately by the same detection procedure for thiram. As shown in Fig.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

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Fe₃O₄@Graphene Oxide@Ag Particles for Surface Magnet Solid-Phase Extraction Surface-Enhanced Raman Scattering (SMSPE-SERS): From Sample Pretreatment to Detection All-in-One

Liu

Wang

Deng

et al. 2016

ACS Appl. Mater. Interfaces

115

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“…The hierarchical structure of the paper contributes to easy uptake and concentration the target into the SERS hot spots and leads to excellent performance. Similarly, Ag NPs-decorated filter paper was synthesized as a "dynamic SERS" substrate for the rapid and accurate identification of pesticide residues at various peels [70]. By using the separation ability of paper-based strip, the paper-based substrate is possibly applied for trace detection from the complex sample containing multiple components.…”

Section: Paper-based Substrate For Both Concentrating and Separatingmentioning

confidence: 99%

Precision Target Guide Strategy for Applying SERS into Environmental Monitoring

Ouyang¹,

Li²,

Zhu³

et al. 2017

Raman Spectroscopy and Applications

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Surface enhanced Raman spectroscopy (SERS) is a promising analytical technique that exhibits various applications in trace detection and identification. When it is applied into environmental monitoring, we should concern several key points to improve detection sensitivity and selectivity for the detection in complex matrix. In this tutorial review, we mainly focus on the strategies for improving the use of SERS into environmental application. The strategies are summarized for enhancing the ability of the substrate to selectively capture specific targets, and for achieving separation and concentration of the analytes from the matrix and the assembly structures for multiple phase detection. We have also introduced several newly developed detection systems using portable instruments and miniaturized devices that are more suitable for infield applications. In addition, we discuss the present challenges that hide it from wide real application and give the outlook for the future development in applying SERS in environmental monitoring.

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“…The peak at 928 cm -1 is associated with the stretching CH 3 N and C=S modes. The peak at 556 cm -1 arises from the SS stretching mode [10,11] .…”

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confidence: 99%

Fabrication of silver nanoparticles decorated anodic aluminum oxide as the SERS substrate for the detection of pesticide thiram

Tan

2015

Optoelectron. Lett.

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An efficient surface-enhanced Raman scattering (SERS) substrate is developed based on silver nanoparticles decorated anodic aluminum oxide (Ag/AAO). The AAO templates were fabricated using a two-step anodization approach, and silver nanoparticles (AgNPs) were obtained by thermal decomposition of Ag nitrate in AAO. The structure of Ag/AAO hybrid substrate is characterized by scanning electron microscopy (SEM). The results show that the as-prepared SERS substrates consist of high-density AgNPs with sizes of tens of nanometers. The AgNPs are adsorbed on the surface of AAO template in the form of network structure which is called "hot spot". The SERS enhancement ability of the nanostructure is verified using thiram as probing molecules. The limit of detection is as low as 1×10 -9 mol/L. The results indicate that the as-prepared substrate possesses excellent SERS sensitivity, high stability and uniformity enhancement.Surface-enhanced Raman scattering (SERS) has attracted more and more attention due to its high sensitivity and the ability to provide fingerprint information of the target molecules. Particularly, it has shown outstanding sensitivity in detecting trace of analytes, sometimes even up to single molecule detection level [1][2][3][4][5][6][7] . However, this technique has not been widely used in practical applications. One major problem is lack of SERS substrates with high stability and sensitivity which can generate reproducible SERS spectra. Therefore, for obtaining an ideal SERS enhancement as well as high sensitivity, high stability and uniformity should be both taken into account. The template synthesis method has been shown to be a selectable approach for fabricating SERS substrates. The anodic aluminum oxide (AAO) membrane with satisfactory physical stability and chemical inertia has attracted a great deal of interest as templates in the preparation of various nanostructures, such as nanotubes, nanowires, nanorods and nanoparticles [8,9] . In this paper, we develop an easy and inexpensive method to fabricate high-density silver nanoparticles (AgNPs) decorated AAO (Ag/AAO). A lot of "hot spot" structures are obtained with uniform distribution due to AgNPs loaded on AAO in the form of network structure.High purity aluminum was obtained from Beijing Iron and Steel Institute. Silver nitrate and thiram were purchased from J&K, Co., Ltd. Oxalic acid, phosphoric acid, chromium trioxide and sulfuric acid were purchased from Beijing Chemical Reagent Company. All the reagents except aluminum were used as received without further purification. All aqueous solutions were prepared using deionized water. Porous AAO template was prepared by a two-step anodization method. Briefly, the aluminum foil was first rinsed with acetone in an ultrasonic bath for 10 min. In electropolishing, the aluminum was immersed in a mixed solution of sulfuric acid (mass percent of 20%), phosphoric acid (mass percent of 80%) and chromium trioxide (mass percent of 2%), and used as the anode at 9 V and 90 °C for 10 min. Then the foil was ano...

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A novel paper rag as ‘D-SERS’ substrate for detection of pesticide residues at various peels

Cited by 136 publications

References 41 publications

Fe₃O₄@Graphene Oxide@Ag Particles for Surface Magnet Solid-Phase Extraction Surface-Enhanced Raman Scattering (SMSPE-SERS): From Sample Pretreatment to Detection All-in-One

Fe₃O₄@Graphene Oxide@Ag Particles for Surface Magnet Solid-Phase Extraction Surface-Enhanced Raman Scattering (SMSPE-SERS): From Sample Pretreatment to Detection All-in-One

Precision Target Guide Strategy for Applying SERS into Environmental Monitoring

Fabrication of silver nanoparticles decorated anodic aluminum oxide as the SERS substrate for the detection of pesticide thiram

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A novel paper rag as ‘D-SERS’ substrate for detection of pesticide residues at various peels

Cited by 136 publications

References 41 publications

Fe3O4@Graphene Oxide@Ag Particles for Surface Magnet Solid-Phase Extraction Surface-Enhanced Raman Scattering (SMSPE-SERS): From Sample Pretreatment to Detection All-in-One

Fe3O4@Graphene Oxide@Ag Particles for Surface Magnet Solid-Phase Extraction Surface-Enhanced Raman Scattering (SMSPE-SERS): From Sample Pretreatment to Detection All-in-One

Precision Target Guide Strategy for Applying SERS into Environmental Monitoring

Fabrication of silver nanoparticles decorated anodic aluminum oxide as the SERS substrate for the detection of pesticide thiram

Contact Info

Product

Resources

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Fe₃O₄@Graphene Oxide@Ag Particles for Surface Magnet Solid-Phase Extraction Surface-Enhanced Raman Scattering (SMSPE-SERS): From Sample Pretreatment to Detection All-in-One

Fe₃O₄@Graphene Oxide@Ag Particles for Surface Magnet Solid-Phase Extraction Surface-Enhanced Raman Scattering (SMSPE-SERS): From Sample Pretreatment to Detection All-in-One