Impact Analysis of Ultrahigh Pressure Treatment Pesticide Residues in Vegetables on near Infrared Spectroscopy Detection

Abstract:

In order to simplify the process of detecting pesticide residues in vegetables, reducing detection time to find a more efficient detection method, ultrahigh pressure processing technique was applied to NIR detection experiments on dimethoate residues in Chinese cabbage, the spectral data was pre-processed and optimized and a spectrum model was established. The results show that: ultrahigh-pressure extraction process did not affect the absorption of near infrared spectroscopy of extraction reagent acetone. A PLS model on near-infrared spectroscopy of samples within the range of 4100-11000cm^-1 was established, obtaining a correlation coefficient R of 87.14%, Rank of 9 and RMSECV of 0.139. Residual concentration of 10^-4-10^-5 has a small relative error, the prediction is better. Further processing and selection of samples will expand the range of predicted concentration.

• Periodical: Applied Mechanics and Materials (Volume 142)
• Pages: 46-49
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.142.46
• Online since: November 2011
• Authors: Ze Min Xu, Yu Jing Sun
• Keywords: Data Optimization, NIR, Pesticide Residue, Ultrahigh Pressure

References

[1] Felizardo P, Baptista P and Menezes J C: Analytica Chimica Acta Vol. 107-113(2007), p.595.

[2] Chen Ruizhan, Zhang Shouqin and Dou Jianping: Transaction of the CSAE Vol. 150-154(2005), p.21.

[3] Liuwei, Liu Jianhua and Xie Mingyong: Agricultural and Food Chemistry Vol. 5376-5380(2009), p.57.

[4] Alemen G D: Food Science Vol. 388-390(1996), p.61.

[5] Chen Ruizhan, Liu Zhiqiang and Zhang Shouqin: Chinese Herbal Medicine Vol. 1905-1908(2007), p.38.

[6] Xu Min, Shun Gui and Dong Tieyou: Journal of Henan University of Science and technology(Agricultural science) Vol. 63-66(2003), p.23.

[7] Wang Duojia, Zhou Xiangyang and Jin Tongming: Spectroscopy and Spectral Analysis Vol. 447-450(2004), p.24.