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

被引：44

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.

引用

页数：10

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