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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Plastic_PETE GDS379 TrnslBrn DESCRIPT
DOCUMENTATION_FORMAT: Man_Made
SAMPLE_ID: GDS379
MATERIAL_TYPE: Plastic
MATERIAL: Plastic PETE, Polyethylene terephthalate
FORMULA: CH4 compound
FORMULA_HTML: CH4 compound
COLLECTION_LOCALITY: Grocery Store
ORIGINAL_DONOR: Gregg Swayze
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Laboratory
SAMPLE_DESCRIPTION:
Translucent dark brown PETE Plastic from a pop bottle. Sample is 1 mm thick.
END_SAMPLE_DESCRIPTION.
XRD_ANALYSIS:
END_XRD_ANALYSIS.
COMPOSITIONAL_ANALYSIS_TYPE: None # XRF, EM(WDS), ICP(Trace), WChem
COMPOSITION_TRACE: None
COMPOSITION_DISCUSSION:
END_COMPOSITION_DISCUSSION.
MICROSCOPIC_EXAMINATION:
END_MICROSCOPIC_EXAMINATION.
SPECTROSCOPIC_DISCUSSION:
Spectrum has a broad absorption in the visible centered near 0.48 microns with a reflectance peak at 0.612 microns. There is an additional band at 0.66 microns before the absorption edge. The spectrum is flat from 0.8 microns to 1.0 microns. A series of complex absorptions dominate the spectrum from this point out to 2.5 microns. The 1.7 micron C-H stretch absorptions and 2.3 micron C-H combination bands are strong in this sample. There is also a complex of four absorptions centered near 2.15 microns.
END_SPECTROSCOPIC_DISCUSSION.
SPECTRAL_PURITY: 1a2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns
| LIB_SPECTRA_HED: | where | Wave Range | Av_Rs_Pwr | Comment |
|---|---|---|---|---|
| LIB_SPECTRA: | splib05a r 10299 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 28874 | g.s.= |