Simultaneous detection of mixed pesticide residues based on portable Raman spectrometer and Au@Ag nanoparticles SERS substrate

被引：29
|
作者：
Ma, Lixin [1 ]
Han, En [1 ]
Yin, Limei [1 ,2 ]
Xu, Qian [1 ]
Zou, Caixia [1 ]
Bai, Junwen [1 ]
Wu, Wei [1 ]
Cai, Jianrong [1 ]
机构：
[1] Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang 212013, Peoples R China
[2] Jiangsu Univ, Sch Agr Engn, Key Lab Modern Agr Equipment & Technol, Minist Educ, Zhenjiang 212013, Peoples R China
来源：
FOOD CONTROL | 2023年 / 153卷
基金：
中国国家自然科学基金;
关键词：
Au@Ag nanoparticles; Simultaneous detection; Portable SERS; Thiram; Acetamiprid; SCATTERING; SPECTROSCOPY; SILVER; THIRAM;
D O I：
10.1016/j.foodcont.2023.109951
中图分类号：
TS2 [食品工业];
学科分类号：
0832 ;
摘要：
A label-free SERS sensor was successfully developed for simultaneous detection of acetamiprid and thiram using easily synthesized bimetallic core-shell Au@Ag nanoparticles. Au@Ag nanoparticles synthesized by a seed-mediated growth method were used as SERS substrates to realize simultaneous detection of mixed pesticides according to the SERS intensity at 635 (acetamiprid) and 1385 (thiram) cm-1. Complex mixed pesticide systems were established to research the feasibility of simultaneous detection of this SERS sensor. The method showed satisfactory linearity in the range of 5-100 & mu;M and 0.5-10 & mu;M with the limit of detection of 1.22 & mu;M and 0.076 & mu;M for acetamiprid and thiram in apple juice samples, respectively. The recovery for accuracy and precision analysis was 90.2-122.12% in apple juice samples. This SERS detection method combined with portable Raman spectrometer will become a powerful tool for simultaneous testing of multiple contaminants in food safety on-site detection.
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页数：10
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