Analysis of waste electrical and electronic equipment (WEEE) using laser induced breakdown spectroscopy (LIBS) and multivariate analysis

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• 作者：Miguel 脕ngel Aguirre ; Montserrat Hidalgo ; Antonio Canals ; Joaquim A. N贸brega ; Edenir R. Pereira-Filho
• 关键词：Waste electrical equipment ; Waste electronic equipment ; Hazardous elements ; Laser induced breakdown spectroscopy ; Chemometric strategies
• 刊名：Talanta
• 出版年：15 December, 2013
• 年：2013
• 卷：117
• 期：Complete
• 页码：419-424
• 全文大小：1233 K

文摘

This study shows the application of laser induced breakdown spectroscopy (LIBS) for waste electrical and electronic equipment (WEEE) investigation. Several emission spectra were obtained for 7 different mobiles from 4 different manufacturers. Using the emission spectra of the black components it was possible to see some differences among the manufacturers and some emission lines from organic elements and molecules (N, O, CN and C₂) led to the highest contribution for this differentiation. Some polymeric internal parts in contact with the inner pieces of the mobiles and covered with a special paint presented a strong emission signal for Cr. The white pieces presented mainly Al, Ba and Ti in their composition. Finally, this study developed a procedure for LIBS emission spectra using chemometric strategies and suitable information can be obtained for identification of manufacturer and counterfeit products. In addition, the results obtained can improve the classification for establishing recycling strategies of e-waste.