Atmospheric pressure capacitively coupled plasma atomizer for atomic absorption and emission spectroscopy
CA 1314636 C · Owner: Blades, Michael Walter · Inventors: Blades, Michael Walter; Liang, Dong Cuan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel atmospheric pressure capactively coupled radio frequency plasma discharge method and apparatus are disclosed. The apparatus is suitable for atomic absorption and emission analysis of small discrete sample volumes (1-50µl). The plasma can be operated at very low Radio Frequency (RF) input powers (30- 600 W) which allows for optimal conditions for atom resonance line absorption measurements. Sample introduction into the plasma is by an electrically heated tantalum strip vaporizer. The vaporization and dissociation-atomization steps are separately controlled. Analyte absorption takes place in the plasma discharge which is characterized by a long pathlength (10-50 cm) and low support …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted March 16, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 16, 2010.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.