G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 21/25 (2006.01) G01N 33/44 (2006.01)
Patent
CA 2060412
ABSTRACT OF THE DISCLOSURE: A process for the qualitative analysis of particles consisting of various kinds of plastic by emission spectroanalysis in which the light radiation which is emitted in response to an irradiation of light at shorter wavelengths and which has a comparatively long wavelength, is detected for radiation intensities within a relatively narros wavelength range to form an emission spectrum and predetermined discrete spectral lines or spectral line ranges of the plastics to be analyzed are detected and utilized for an identification of the plastic particles. Each plastic particle is subjected to a pulse of short- wavelength light, a characteristic number is: determined in accordance with an algorithm from the radiation intensities of the discrete spectral lines or spectral line ranges, and a sorting signal is generated in response to a comparison of that characteristic number with predetermined limiting values.
Hermes Robert E.
Loree Thomas R.
Metallgesellschaft Aktiengesellschaft
Robic
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