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Quantitative Determination of Chlormequat Chloride Residue in Wheat Using Surface-Enhanced Raman Spectroscopy
Joint Authors
Weng, Shizhuang
Qiu, Mengqing
Dong, Ronglu
Wang, Fang
Zhao, Jinling
Huang, Linsheng
Zhang, Dongyan
Source
International Journal of Analytical Chemistry
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-07-10
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
A simple and sensitive method for detection of chlormequat chloride residue in wheat was developed using surface-enhanced Raman spectroscopy (SERS) coupled with chemometric methods on a portable Raman spectrometer.
Pretreatment of wheat samples was performed using a two-step extraction procedure.
Effective and uniform active substrate (gold nanorods) was prepared and mixed with the sample extraction solution for SERS measurement.
The limit of detection for chlormequat chloride in wheat extracting solutions and wheat samples was 0.25 mg/L and 0.25 μg/g, which was far below the maximum residual value in wheat of China.
Then, support vector regression (SVR) and kernel principal component analysis (KPCA), multiple linear regression, and partial least squares regression were employed to develop the regression models for quantitative analysis of chlormequat chloride residue with spectra around the characteristic peaks at 666, 713, and 853 cm−1.
As for the residue in wheat, the predicted recovery of established optimal model was in the range of 94.7% to 104.6%, and the standard deviation was about 0.007 mg/L to 0.066 mg/L.
The results demonstrated that SERS, SVR, and KPCA can provide the accurate and quantitative determination for chlormequat chloride residue in wheat.
American Psychological Association (APA)
Weng, Shizhuang& Qiu, Mengqing& Dong, Ronglu& Wang, Fang& Zhao, Jinling& Huang, Linsheng…[et al.]. 2018. Quantitative Determination of Chlormequat Chloride Residue in Wheat Using Surface-Enhanced Raman Spectroscopy. International Journal of Analytical Chemistry،Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1166451
Modern Language Association (MLA)
Weng, Shizhuang…[et al.]. Quantitative Determination of Chlormequat Chloride Residue in Wheat Using Surface-Enhanced Raman Spectroscopy. International Journal of Analytical Chemistry No. 2018 (2018), pp.1-8.
https://search.emarefa.net/detail/BIM-1166451
American Medical Association (AMA)
Weng, Shizhuang& Qiu, Mengqing& Dong, Ronglu& Wang, Fang& Zhao, Jinling& Huang, Linsheng…[et al.]. Quantitative Determination of Chlormequat Chloride Residue in Wheat Using Surface-Enhanced Raman Spectroscopy. International Journal of Analytical Chemistry. 2018. Vol. 2018, no. 2018, pp.1-8.
https://search.emarefa.net/detail/BIM-1166451
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1166451