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A Measurement Method on Pesticide Residues of Apple Surface Based on Laser-Induced Breakdown Spectroscopy

文献类型： 外文期刊

作者： Ma, Feiyu 1 ; Dong, Daming 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Natl Engn Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China

关键词： Laser-induced breakdown spectroscopy;Pesticide residues;Apples;Chlorpyrifos

期刊名称：FOOD ANALYTICAL METHODS （ 影响因子：3.366； 五年影响因子：3.07 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Pesticide residues on fruit surfaces do great harm, but it is difficult to realize the fast and on-site measurement of pesticide residues. In this paper, we explored the potential application of laser-induced breakdown spectroscopy (LIBS) technology for the fast measurement of chlorpyrifos residues on apple surfaces. The spectral characteristics of phosphorus (213.62 and 214.91 nm), sulfur (393.33 and 396.89 nm), and chlorine (837.594 nm) in chlorpyrifos could be captured by LIBS. Significant spectra differences were found between untreated apples and apples sprayed with chlorpyrifos. The results of chemometrics methods indicate that the spectra of clean apples and the apples sprayed with several different concentrations of chlorpyrifos have obvious differences. The study demonstrates that laser-induced breakdown spectroscopy, which has advantages in micro-destructive, fast, and on-site test, not only can detect chlorpyrifos on fruit surfaces but also allows the semi-quantitative detection.

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