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Citation: LI Xia, CHEN Xiao-Shui, HUANG Yi-Wei, YANG Jun, WEN Bao-Ying, ZHOU Guo-Jun, LI Jian-Feng. Simultaneous Determination of Triadimenol and Triadimefon in Raw Tobacco by Surface-enhanced Raman Spectroscopy[J]. Chinese Journal of Analytical Chemistry, ;2020, 48(12): 1747-1752. doi: 10.19756/j.issn.0253-3820.201460 shu

Simultaneous Determination of Triadimenol and Triadimefon in Raw Tobacco by Surface-enhanced Raman Spectroscopy

1.
China Tobacco Zhejiang Industrial Co. Ltd., Hangzhou 310008, China;
2.
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China

Received Date: 4 August 2020
Revised Date: 8 September 2020

Fund Project: This work was supported by the National Natural Science Foundation of China (Nos. 21925404, 21775127) and the Project of China Tobacco Zhejiang Co. Ltd. (No. ZJZY2019C005).

Surface-enhanced Raman spectroscopy (SERS) can obtain highly sensitive structural information of substances with ultralow concentration or even at the single-molecule level. Herein, a rapid detection method for triadimenol and triadimefon in raw tobacco was established using SERS combined with portable Raman spectrometer. In this method, polyamide under acidic conditions was used as a purifying agent to remove the interference from pigments, phenols, organic acids and other impurities in tobacco. Gold-based SERS substrates were used to amplify the Raman signals through the adsorption of triadimenol and triadimefon on the surface of gold nanoparticles. It was found that the detection sensitivity of triadimenol and triadimefon residues in raw tobacco was 1 mg/kg, and the time needed was 8-12 min. This method was simple, low-cost, and accurate, thus was suitable for the rapid detection of triadimenol and triadimefon pesticide residues in tobacco.
- Surface-enhanced Raman spectroscopy,
- Tobacco,
- Pesticide residues,
- Triadimenol,
- Triadimefon,
- Polyamide,
- Rapid detection
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