A novel metastable state nanoparticle-enhanced Raman spectroscopy coupled with thin layer chromatography for determination of multiple pesticides

Food Chemistry
Yan KangYiping Du

Abstract

A novel and highly sensitive metastable state nanoparticle-enhanced Raman spectroscopy (MSNERS) was reported in this work, which employed an amphiphilic polymer polyurethane-Ag nanoparticle (AgNPs) as the MSNERS substrate. Polyurethane could form micelle to incorporate nanoparticles and analytes, where targets could be in close contact with the metal surface, which was effective for further enhancing the detection sensitivity. Time-dependent visible absorption spectra and time-dependent Raman spectra indicated that polyurethane could greatly enhance the stability of AgNPs aggregates during the volatilization process, which was a great improvement of MSNERS substrate. Combining this MSNERS substrate with the rapid separation method of thin layer chromatography (TLC), this TLC-MSNERS was successfully applied to analyze mixed pesticides on fruit skin and the detection limits of thiabendazole, triazophos and phosmet were 0.02 μg/mL, 0.8 μg/mL, and 0.6 μg/mL, respectively. It enhanced 1 order of magnitude the signals of analytes in comparison to that of traditional TLC-SERS method.

Citations

Aug 8, 2020·Water Environment Research : a Research Publication of the Water Environment Federation·Chao LiJinkai Xue
Jul 1, 2019·Comprehensive Reviews in Food Science and Food Safety·Hongbin PuDa-Wen Sun
Dec 17, 2020·Comprehensive Reviews in Food Science and Food Safety·Yiqun HuangBarbara A Rasco
May 14, 2021·Critical Reviews in Analytical Chemistry·Mansour MahmoudpourJafar Ezzati Nazhad Dolatabadi
Dec 3, 2021·Critical Reviews in Food Science and Nutrition·Mingqi ZhaoA M Abd El-Aty

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