Article
Chemistry, Applied
A. Lorena Picone, Maria Luz Rizzato, Anabela R. Lusi, Rosana M. Romano
Summary: A novel SERS method for detecting thiram residues in fruit and vegetable peels was reported, showing promising results in experiments.
Article
Spectroscopy
Xiaoyuan Ma, Jie Xie, Zhouping Wang, Yin Zhang
Summary: A flexible SERS substrate based on PDMS modified with gold nanostars was developed for in-situ detection of pesticide residues on fruit surfaces. The substrate showed good signal uniformity, stability, and sensitivity, with the capability to directly detect pesticides in agricultural products on site without the need for sample preprocessing steps.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Nanoscience & Nanotechnology
Xingxing Yu, Yan Sun, Jieyu Hu, Junjie Wang, Xiumei Zhuang, Shenghao Zhang, Haiting Ren, Hongxing Qiu, Yueshou Zhang, Yongjun Hu
Summary: A three-dimensional MoS2/Au/Ag nanostructure was developed for rapid and sensitive detection of pesticide residues using Surface-enhanced Raman scattering (SERS). The nanostructures combine the advantages of high-enhancement SERS substrates and high-accuracy ratiometric Raman detection. They showed excellent SERS activity in ratiometric analysis and successfully detected thiabendazole (TBZ) in apple juice with a limit of detection down to 0.1 ppm.
ACS APPLIED NANO MATERIALS
(2023)
Article
Food Science & Technology
Luyao Wang, Pei Ma, Hui Chen, Min Chang, Ping Lu, Ning Chen, Yanbing Yuan, Nan Chen, Xuedian Zhang
Summary: This study developed a fast, sensitive, economical, and lossless surface-enhanced Raman spectroscopy (SERS)-based method for the detection of residues of widely used insecticides and herbicides, CPF and 2,4-D. The method can accurately detect mixed pesticide residues on an apple surface at a minimum concentration of 0.001 mg L-1, which is below the pesticide residue standard. It has potential for accurate detection of pesticide residues in other agricultural and food industries.
Article
Food Science & Technology
Alfredo Nicolas Dominguez, Luis Emanuel Jimenez, Rosa Maria Susana Alvarez
Summary: This study applied surface-enhanced Raman spectroscopy (SERS) for the qualitative and semi-quantitative detection of pyraclostrobin in agricultural products. By using a simple and low-cost SERS active substrate, the fungicide was successfully detected in lemon peel at a high concentration. The molecule was found to adopt different orientations on the substrate.
JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION
(2023)
Article
Instruments & Instrumentation
Yao Xiong, Junshi Huang, Ruimei Wu, Xiang Geng, Haigen Zuo, Xu Wang, Lulu Xu, Shirong Ai
Summary: Surface-enhanced Raman spectroscopy (SERS) combined with characteristic peak screening methods was developed for analyzing chlorpyrifos pesticide residues in rice. The results showed that using six selected characteristic peaks, the analysis could be completed quickly and accurately.
APPLIED SPECTROSCOPY
(2023)
Article
Food Science & Technology
Min-Hui Lin, Lin Sun, Fanbin Kong, Mengshi Lin
Summary: This study established a novel, facile, and rapid testing technique using surface-enhanced Raman spectroscopy (SERS) coupled with gold nanostars as a SERS substrate to detect pesticide residues in green tea. The spiky tips of gold nanostars acted as SERS hot spots to enhance Raman signals, while the rough topography increased surface area for better substrate-analyte interactions. The SERS method showed great potential for qualification and quantification of trace contaminants in foods with a detection limit of 0.2 mg/kg for paraquat in green tea samples.
Article
Engineering, Environmental
Ting Wang, Shuangpeng Wang, Zehua Cheng, Jinchao Wei, Lele Yang, Zhangfeng Zhong, Hao Hu, Yitao Wang, Bingpu Zhou, Peng Li
Summary: Pesticide residues pose a significant threat to human health and the environment, driving the need for rapid and effective detection methods. Core-shell nanostructures as novel SERS substrates have been widely utilized in rapid pesticide detection research. Understanding and monitoring pesticide residues can be improved through the classification and evaluation of different core-shell nanostructures and early-warning analysis.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Environmental Sciences
Mingtao Li, Xiang Zhang
Summary: The SERS technique shows promise as an analytical tool for rapid, sensitive, and selective detection of environmental pollutants, with advantages such as huge signal amplification and quick target analyte identification. Advances in nanostructure SERS substrates and portable Raman devices will help promote this novel detection technology for rapid on-site testing in the future.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2021)
Article
Chemistry, Applied
Meiting Guo, Fang Wang, Wang Guo, Run Tian, Tingtiao Pan, Ping Lu
Summary: This study investigated the adsorption behavior of the pesticide pymetrozine on Au@AgNPs surfaces and established a surface-enhanced Raman scattering (SERS) method for detecting pymetrozine residues in apples. The results showed that pymetrozine exhibited different forms of adsorption on the Au@AgNPs surface in various solutions, and the SERS method achieved high sensitivity through the synergistic effect of pymetrozine, Au@AgNPs, and NaOH.
Article
Materials Science, Multidisciplinary
Chansi, Satyapal Chaudhary, Ashish Mani, Lalit M. Bharadwaj, Tinku Basu
Summary: The hand-held electrochemical sensor interfaced with a smartphone allows rapid monitoring of organophosphate in vegetable extract on-site. Its simple and inexpensive architecture, combined with a miniaturized potentiostat powered by rechargeable battery, inspired the construction of adaptable sensors through software modulation, thus opening new avenues for affordable sensor and wearable device fabrication.
Article
Spectroscopy
Zhengdong Zhu, Xiaoyi Shi, Yating Feng, Meng He, Cheng Ye, Hongyang Zhou, Maofeng Zhang, Wei Zhang, Jianhua Li, Changlong Jiang
Summary: A biomimetic synthesis method was reported for the fabrication of a reliable surface-enhanced Raman scattering (SERS) substrate capable of in-situ detection of analytes adsorbed on nonplanar surfaces. The use of a lotus leaf mastoid structure replica on a flexible and transparent PDMS film, combined with plasmonic AgNPs, resulted in a powerful chemical sensor with high sensitivity and multiplex detecting capability. The sensor showed high signal repeatability due to the periodic mastoid structure array and excellent durability for identifying trace analytes on curved surfaces.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Biochemistry & Molecular Biology
Zhangmei Hu, Dandan Peng, Feiyue Xing, Xiang Wen, Kun Xie, Xuemei Xu, Hui Zhang, Feifei Wei, Xiaoke Zheng, Meikun Fan
Summary: A highly sensitive liquid freestanding membrane SERS method was developed for quantitative detection of insecticide deltamethrin residues. It showed good accuracy and high sensitivity, and could be applied in household pesticide residues analysis.
Article
Green & Sustainable Science & Technology
Meng He, Zhihao Li, Yujie Guo, Maofeng Zhang, Zhengdong Zhu, Xiaoyi Shi, Konghao Han, Youju Huang, Honglin Liu
Summary: Researchers demonstrated a method of shrinking three-dimensional (3D) hot spot droplets on a hydrophobic substrate for the quantitative and multiplex detection of pesticide residues using portable Raman spectrometer. The shrunk droplets, consisting of analyte solution and AgNPs sol, simultaneously increased the density of plasmonic hot spots and immobilized target molecules. The proposed strategy exhibited excellent SERS sensitivity for the analysis of pesticides down to 10(-8) m and achieved quantitative analysis and multi-component detection of pesticide residues on honeysuckle surface.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Nanoscience & Nanotechnology
Xin Yi, Zhishan Yuan, Xiao Yu, Lijuan Zheng, Chengyong Wang
Summary: Pesticide residues pose a global threat to human health, and conventional sensors are unable to detect them on both the surface and inside agricultural products simultaneously. In this study, a new microneedle patch-based surface-enhanced Raman spectroscopy (SERS) sensor is introduced, which can detect pesticide residues on both the surface and inside agricultural products using needles and the basement. The Ag nanoparticles and sodium hyaluronate/poly(vinyl alcohol) (HA/PVA) hydrogel in this sensor amplify the Raman signals of pesticide residues and enable convenient collection. The stepped structure of the microneedles increases the sensor's surface area. The sensor has been shown to detect thiram and thiabendazole (TBZ) pesticide residues with detection limits of 10-7 and 10-8 M, respectively. The detection process is minimally invasive and harmless to agricultural products. The application of this microneedle patch-based SERS sensor can be extended to the safety and health monitoring of other plants and animals.
ACS APPLIED MATERIALS & INTERFACES
(2023)