Experiment
Title
Vis-NIR reflectance spectra of biomolecules dry powders at 293±2 K
DOI
10.26302/SSHADE/EXPERIMENT_OP_20180111_001
Data reference
Poch, Olivier (2014): Vis-NIR reflectance spectra of biomolecules dry powders at 293±2 K. SSHADE/BYPASS (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_OP_20180111_001
Publications
Comments
This experiment presents data shown in Figure 2 of the publication.
Database(s)
Experimentalists
Type(s)
laboratory measurement
Description
Reflectance spectra (from 0.38 to 2.4 µm) of commercial powders of some of the main terrestrial biomolecules were measured at room temperature (~293 K) and pressure (~1 atm): proteins, DNA, phospholipids, carbohydrates, pigments (porphyrins, carotenoid)
Number of spectra
9
Variable type(s)
  • sample composition
Comments
The different samples of biomolecules were prepared and measured one after the other.
Instrument
Hyperspectral imaging system Vis-NIR
Sample holder
The SCITEAS chamber was fully open, at room temperature and pressure. The samples were deposited on top of a big aluminum cylinder, directly below the imaging system (no window).
Standard medium
air
Observation mode
spectrum
Spectral range type(s)
Vis, NIR
Valid spectral range(s)
Min - Max (${\mu}m$) Sampling (${\mu}m$) Resolution (${\mu}m$) Position accuracy (${\mu}m$) Absorption edge
#1 0.38 - 0.96 0.02 0.015
#2 0.96 - 2.4 0.01 0.03
Observation geometry
biconical
Observation mode
fixed angles
Emergence angle
13.0°
Azimuth angle
0.0°
Comments
The light beam emitted from the extremity of the fibre bundle positionned about 300 mm above the sample surface has a divergence half-angle of 12.7°. The light source incidence and azimuth angles are slightly variable from pixel to pixel.
Illumination
Observation
Comments
partial polarization variable with wavelength (from monochromator grating)
Observation mode
roi averaged
Date begin - end
2014-02-12 - 2014-02-25

Versions

Release date
2018-01-31 23:51:01 UTC+0000
Version (Date)
#1 (2018-01-20 23:09:59 UTC+0000)