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(For further information on spectroscopy, see:
http://speclab.cr.usgs.gov)
TITLE: Plastic_Pipe GDS344 Blue DESCRIPT
DOCUMENTATION_FORMAT: Man_Made
SAMPLE_ID: GDS344
MATERIAL_TYPE: Plastic
MATERIAL: Water-Pipe
FORMULA: CH4 compound
FORMULA_HTML: CH4 compound
COLLECTION_LOCALITY: Denver, Colorado
ORIGINAL_DONOR: Gregg Swayze
CURRENT_SAMPLE_LOCATION: USGS Denver Spectroscopy Lab
ULTIMATE_SAMPLE_LOCATION: USGS Denver Spectroscopy Lab
SAMPLE_DESCRIPTION:
Blue plastic water main pipe fragment 1.9 cm thick. Type typically used in new construction of housing projects in the USA.
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:
The spectrum has a broad peak at 0.499 microns and notable absorption doublet at 0.676 microns probably due to the light blue pigment. There are other absorptions at 1.20 and 1.42 microns. Absorptions at 1.7 and 2.3 microns are C-H related.
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 10421 | 0.2-3.0µm | 200 | g.s.= |
| LIB_SPECTRA: | splib06a r 29017 | g.s.= |