1. © Identification Of Different Kinds Of Plastics Using Laser- Induced Breakdown Spectroscopy For Waste Management Gondal, MA; Siddiqu, MN TAYLOR FRANCIS INC, JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES ENVIRONMENTAL ENGINEERING; pp: 1989-1997; Vol: 42 King Fahd University of Petroleum & Minerals http://www.kfupm.edu.sa Summary Laser-Induced Breakdown Spectroscopy (LIBS) was applied for the identification of various kinds of plastics for management and recycling of plastic waste. In order to fingerprint these plastics, a laser-produced plasma emission was recorded for spectral analysis of various kinds of plastics. The plasma was generated by focusing a Nd:YAG laser radiation at wavelength = 1064 nm having laser energy = 40 mJ. The 6 main family of plastics tested are: Low Density Polyethylene (LDPE), High Density Polyethylene (HDPE), Polypropylenes (PP), Polystyrene (PS), Polyethylene Terephthalate (PET) and Polyvinyl chloride (PVC). The capability of this technique is demonstrated by the analysis of the major constituents carbon and hydrogen present in polymer matrices. The LIBS signal intensity measured for carbon and hydrogen was detrimental for the fingerprinting of various kinds of plastics. The C/H line intensity ratio was 1.68, 1.51, 1.42, 1.16, 1.01 and 0.91 for HDPE, LDPE, PS, PP, PET and PVC respectively. The detection limits of carbon and hydrogen were found to be approximately 6 mu g/g by applying 20 laser shots. The unique features of LIBS are: it is a simple, rapid, remote, real-time analysis without sampling requirements. The study demonstrated that LIBS could be applied as a best tool for sorting out different kinds plastics on a fast scale for waste management. The health hazards of different kinds of plastics are also described. Copyright: King Fahd University of Petroleum & Minerals; http://www.kfupm.edu.sa

2. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 28. 29. 30. 31. © References: *CDC, 2001, NAT REP HUM EXP ENV *EC CTR PLAST TASK, 1996, EC CTR PLAST TASK FO *RISK RED ENG LAB, 1992, EPA600S92005 RISK RE *ROYAL COMM, 1999, STAND METH EX WAT WA AHMED I, 1993, J FIZ MALAYS, V14, P43 ANGLOS D, 1997, APPL SPECTROSC, V51, P1025 CIUCCI A, 1996, APPL PHYS B-LASERS O, V63, P185 COLAO F, 2002, SPECTROCHIM ACTA B, V57, P1219 FOTAKIS C, 1997, OSA TOPS LASERS OPTI, V9, P99 GOBERNADOMITRE PAC, 1997, APPL SPECTROSC, V8, P1125 GONDAL MA, 1997, APPL OPTICS, V36, P3195 GONDAL MA, 2000, TALANTA, V53, P147 GONDAL MA, 2001, APPL OPTICS, V40, P2010 GONDAL MA, 2006, DETECTION HEAVY META, V69, P1072 GONDAL MA, 2007, DETERMINATION POISON, V71, P73 GONDAL MA, 2007, J ENV SCI HLTH A, V42, P6 GONDAL MA, 2007, ROLE VARIOUS MAT TRA, V72, P642 KNOPP R, 1996, FRESEN J ANAL CHEM, V355, P16 LO KM, 2002, APPL SPECTROSC, V56, P682 MARAVELAKI P, 1997, ACTA B, V52, P41 PIEPMEIER EH, 1986, ANAL APPL LASERS, CH19 RADZIEMSKI LJ, 1989, LASER INDUCED PLASMA RADZIEMSKI LJ, 2002, SPECTROCHIM ACTA B, V57, P1109 REDHWI HH, 2001, COMMUNICATION RUSAK DA, 1997, CRIT REV ANAL CHEM, V27, P257 SALLE B, 2005, SPECTROCHIM ACTA B, V60, P479, DOI 27.10.1016/j.sab.2005.02.009 SRINIVASAN R, 1989, CHEM REV, V89, P1303 STRATIS DN, 2000, APPL SPECTROSC, V54, P1719 STRIGANOVE A, 1968, TABLE SPECTRAL LINES TOGNONI E, 2002, SPECTROCHIM ACTA B, V57, P1115 For pre-prints please write to: magondal@kfupm.edu.sa Copyright: King Fahd University of Petroleum & Minerals; http://www.kfupm.edu.sa