Qualitative Analysis of Lambda-Cyhalothrin on Chinese Cabbage Using Mid-Infrared Spectroscopy Combined with Fuzzy Feature Extraction Algorithms

Yanjun Shen, Xiaohong Wu, Bin Wu, Yang Tan and Jinmao Liu
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Yanjun Shen: Institute of Talented Engineering Students, Jiangsu University, Zhenjiang 212013, China
Xiaohong Wu: School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, China
Bin Wu: Department of Information Engineering, Chuzhou Polytechnic, Chuzhou 239000, China
Yang Tan: Institute of Talented Engineering Students, Jiangsu University, Zhenjiang 212013, China
Jinmao Liu: Institute of Talented Engineering Students, Jiangsu University, Zhenjiang 212013, China

Agriculture, 2021, vol. 11, issue 3, 1-14

Abstract: Excess pesticide residues on cabbage are harmful to humans. In this study, we propose an innovative strategy for a quick and nondestructive qualitative test of lambda-cyhalothrin residues on Chinese cabbage. Spectral profiles of Chinese cabbage leaf samples with different concentrations of surface residues of lambda-cyhalothrin were collected with an Agilent Cary 630 FTIR Spectrometer. Standard normal variate (SNV), multiplicative scatter correlation (MSC), and principle component analysis (PCA) were utilized to preprocess the spectra. Then, fuzzy Foley-Sammon transformation (FFST), fuzzy linear discriminant analysis (FLDA), and fuzzy uncorrelated discriminant transformation (FUDT) were employed to extract features from the spectra data. Finally, k -nearest neighbor ( k NN) was applied to classify samples according to the concentration of lambda-cyhalothrin residue. The highest identification accuracy rates of FFST, FLDA, and FUDT were 100%, 97.22%, and 100%, respectively. FUDT performed the best considering the combination of accuracy rate and required computing time. We believe that mid-infrared spectroscopy combined with fuzzy uncorrelated discriminant analysis is an effective method to accurately and quickly conduct qualitative analyses of lambda-cyhalothrin residues on Chinese cabbages. This method may have applications in other crops and other pesticide residues.

Keywords: Chinese cabbage; lambda-cyhalothrin; mid-infrared spectroscopy; fuzzy linear discriminant analysis; fuzzy Foley-Sammon transformation; fuzzy uncorrelated discriminant analysis; k NN (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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