Laser-induced plasma spectroscopy for plastic identification

The goal of this work was instant identification of post‐consumer plastics by laser induced plasma spectrometry (LIPS). LIP spectra from plastics in a 200–800 nm spectral window were compared with reference spectral libraries stored in a computer. The libraries consisted of representative spectra fr...

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Bibliographic Details
Published in:Polymer engineering and science 2000-11, Vol.40 (11), p.2423-2429
Main Authors: Anzano, J. M., Gornushkin, I. B., Smith, B. W., Winefordner, J. D.
Format: Article
Language:English
Subjects:
Analysis
Applied sciences
Exact sciences and technology
Plasma spectroscopy
Plastics
Polyethylene
Polyethylene terephthalate
Polymer industry, paints, wood
Polypropylene
Polystyrene
Polyvinyl chloride
Spectrum analysis
Technology of polymers
Waste treatment
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Summary:The goal of this work was instant identification of post‐consumer plastics by laser induced plasma spectrometry (LIPS). LIP spectra from plastics in a 200–800 nm spectral window were compared with reference spectral libraries stored in a computer. The libraries consisted of representative spectra from different groups of recycled plastic samples. The plasma emission spectra of polyethylene terephthalate (PET), high density polyethylene (HDPE), polyvinyl chloride (PVC), low density polyethylene (LDPE), polypropylene (PP) and polystyrene (PS) were studied. Simple statistical correlation methods including linear and rank correlations were used. The probabilities of correct identification ranged from 0.8 to 1 with values close to unity for most of the polymers studied.
ISSN:0032-3888
1548-2634
DOI:10.1002/pen.11374