Abstract：The present article investigated the laser induced breakdown spectroscopy for a wide range of plastic (HDPE, LDPE, PET, NYLON) with the ultraviolet (UV) excitation wavelength. Compared with the National Institute of Standards and Technology atomic spectroscopy database line data, the author analyzed the detailed spectral atomic lines of the dominated elements. With the help of principal component analysis in the Chemometrics, the identification model was constructed under the method of cross-validation. Besides, all kinds of potential influence were analyzed for the detailed model. The result showed us vividly that the laser induced breakdown spectroscopy combined with the principal component analysis had the capacity to discriminate different plastic materials. It gave us a new method for model building and material discrimination. These results can be useful for further research on laser induced breakdown spectroscopy for the differentiation of different materials.
[1] Pasquini C，Cortez J，Silva L，J. Braz. Chem. Sco., 2007, 18: 463. [2] Giakoumaki A, Osticioli I, Anglos D. Appl. Phys. A, 2006, 83: 537. [3] Salle B, Mauchien P, Mautice S. Spectrochimica Acta Part B, 2007, 62: 739. [4] Janzen C, Fleign R, Noll R, et al. Spectrochimica Acta Part B，2005, 60: 993. [5] LU Ji-dong, LIU Yan, LI Ting(陆继东, 刘 彦, 李 婷). Joumal of South China University of Technology(Natural Science Edition)(华南理工大学学报·自然科学版), 2007, 35: 185. [6] ZHANG Da-cheng, MA Xin-wen, ZHU Xiao-long(张大成, 马新文, 朱小龙，等). Acta Physics Sinica(物理学报), 2008, 57: 6348. [7] LI Xin-zhong，YU Ding-sheng，XU Ri-wei，et al(李新中，余鼎声，徐日炜，等). China Plastics Industry(塑料工业)，2005, 10(33): 44. [8] Jennifer L Gottfried，Frank C De Lucia Jr et al. Army Research Laboratory，2007. [9] Jennifer L Gottfried，Frank C De Lucia Jr, et al. Anal. Bioanal. Chem., 2009, 395: 283. [10] DING Hui-lin, GAO Li-xin ZHENG Hai-yang, et al(丁慧林，高立新, 郑海洋等). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2010, 30(1)：1. [11] LIU Tao, TIAN Hong-xiang, GUO Wen-yong(刘 韬，田洪祥，郭文勇). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2010, 30(3)：779. [12] DAI Chuan-yun, GAO Xiao-yan, TANG Bo, et al(戴传云，高晓燕，汤 波，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2010, 30(2)：358. [13] LIN Ping, CHEN Yong-ming, HE Yong(林 萍，陈永明，何 勇). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2010, 29(2)：382. [14] LU Wan-zhen(陆婉珍). Modern Near Infrared Spectroscopy Analytical Technology(Second Edition)(现代近红外光谱分析技术，第2版). Beijing: China Petrochemical Press(北京：中国石化出版社)，2007. 39.
