A Controlled-Atmosphere Plasma Arc for Emission Spectrography of Nonmetal Elements
Abstract:To estimate the weight percents of certain nonmetal elements in organic compounds found in petroleum reservoirs, the Bureau of Mines designed and constructed a controlled-atmosphere plasma are which effectively excludes air from the plasma. Selected organic compounds that contained nonmetal elements were mixed with a solvent essentially free of those elements. The weight percents of the nonmetal elements were estimated from the produced diatomic spectral bands; results were reasonably accurate. Analytical working curves were prepared for nitrogen in the range from 15 to 450 μg for 100 mg samples using the analytical carbon–nitrogen band at 3883 Å and the internal standard carbon–carbon band at 3607 Å. Curves also were prepared for hydrogen, sulfur, and oxygen that had limited sensitivity to detection. Another indicated application of this plasma arc is for characterization of high-boiling petroleum fractions in liquid chromatographic effluents. The rates at which diatomic species are produced and destroyed directly influence the intensity of each corresponding band spectrum.
Document Type: Research Article
Affiliations: Bartlesville Petroleum Research Center, Bureau of Mines, U. S. Department of the Interior, Bartlesville, Oklahoma 74003
Publication date: November 1, 1970
More about this publication?
- The Society publishes the internationally recognized, peer reviewed journal, Applied Spectroscopy, which is available both in print and online. Subscriptions are included with membership or can be purchased by institutional or corporate organizations. Abstracts may be viewed free of charge. Previously published as Bulletin (Society for Applied Spectroscopy)
- Editorial Board
- Information for Authors
- Submit a Paper
- Subscribe to this Title
- Membership Information
- Request copyrighted SAS materials
- Spectroscopic Nomenclature
- Focal Point (Open Access)
- ingentaconnect is not responsible for the content or availability of external websites