Title :
Measurement of pesticide residues in food based on diffuse reflectance IR spectroscopy
Author :
Hiroaki, Ishizawa ; Toyonori, Nishimatsu ; Eiji, Toba
Author_Institution :
Dept. of Textile Syst. Eng., Shinshu Univ., Ueda, Japan
fDate :
10/1/2002 12:00:00 AM
Abstract :
This paper describes nondestructive pesticide measurement of agricultural products based on Fourier transform infrared diffuse reflectance spectroscopy (FT-IR-DRS). Both FT-IR-DRS spectra and the concentration of the pesticide residues are measured for real lettuce samples. Thereafter, the calibration models to estimate the residual concentration of the pesticides are derived by the partial least square regression of the spectra. Cross validations of the calibration models are also carried out. By using this method, it takes two minutes to measure the multi-elements of pesticide residues in a sample lettuce head. Food safety inspection could be enhanced based on FT-IR-DRS.
Keywords :
Fourier transform spectroscopy; agriculture; calibration; chemical sensors; chemical variables measurement; food processing industry; infrared spectroscopy; least squares approximations; safety; spectrochemical analysis; FT-IR-DRS spectra; Fourier transform infrared diffuse reflectance spectroscopy; IR spectroscopy; agricultural products; calibration models cross validation; food pesticide residue measurement; food safety inspection; lettuce head multi-element pesticide residues; nondestructive pesticide measurement; pesticide residue concentration; spectra partial least squares regression; Agricultural products; Calibration; Fourier transforms; Infrared spectra; Least squares methods; Mirrors; Reflectivity; Spectroscopy; Systems engineering and theory; Textile technology;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2002.807791