An Effective Classification Procedure for Plastic Food Packaging Based on NIRS

Abstract:

Near-infrared spectroscopy (NIRS) is a technique that shows many possibilities in the field of identifying chemicals and materials. Plastic food packaging is not excluded of this practical application. In the current recycling system, a plastic identification must be done to avoid the hidden danger caused by defective goods. In an attempt to develop an alternative plastic identification technology, four plastics are collected including Polypropylene (PP), Polyethylene (PE), Polyethylene Terephthalate (PET), and Polystyrene (PS), and a qualitative model with Factor Analysis method will be built. Performance of the model varies substantially if wave bands and multivariate data analysis techniques change. When the wavelength ranges from 4700 to 10000cm^-1, plastic food packaging whose spectrum data are optimized by first derivative + vector normalization with 5 factors can be successfully identified, with which a classification error of less than 4% can be reached within the validation set of 100 spectrum. The results obtained indicate that the method proposed in this paper has a real potential for future plastic classification uses.

• Periodical: Applied Mechanics and Materials (Volumes 88-89)
• Pages: 399-403
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.88-89.399
• Online since: August 2011
• Authors: Jing Jing Wang, De Xin Hou, Bei Lei Wu, Shu Liang Ye, Heng Yang
• Keywords: Classification, Factor Analysis (FA), Near Infrared Spectroscopy (NIRS), Plastic

References

[1] L.J. Xie, Y.B. Ying, T.J. Ying: submitted to Journal of Food Engineering (2009).

[2] Cozzolino D. Moron: submitted to Journal of Soil Tillage Research (2006).

[3] M. Watari, Y. Ozaki: submitted to Journal of Appl. Spectroscopy (2004).

[4] D.B. Coates, R.M. Dixon: submitted to Journal of Near. Infrared Spec (2008).

[5] Y.L. Rao, B.R. Xiang, X.H. Zhou, Z.M. Wang, S.F. Xie, J.P. Xu: submitted to Journal of Food Eng (2009).

[6] S. Armenta, S. Garrigues, M. Guardia: submitted to Journal of Anal. Chim. Acta (2007).

[7] Tan Yao, Wang Qunwei, Wang Hao: submitted to Journal of China Plastic Industry (2009).

[8] Magali Laasonen, Jukka Rantanen, et al: submitted to Journal of The Analyst (2001).

[9] Eisenreich N, Rohe Th: submitted to Journal of Kunststoff, (1996).

[10] Dou Yanli, Zhang Wanxi, et al: submitted to Journal of Analysis Chemistry (2006).

[11] Yang Aiming, Lin Lizhong, et al: submitted to Journal of Yunnan University Journal (2001).