Document Detail

Trace determination of carbon and oxygen in tungsten by spark-source mass-spectrography.
MedLine Citation:
PMID:  18962117     Owner:  NLM     Status:  In-Data-Review    
A high pumping-speed vacuum system, incorporating a mechanical cryo-pump, was designed and built to attach to the source of a spark-source mass-spectrometer to reduce the partial pressure of carbon- and oxygen-containing gases. Pressures in the 10(-10) mmHg range were obtained, which provide a suitable environment for the determination of carbon and oxygen in tungsten. The effect of the partial pressure of CO on carbon and oxygen determination has been studied and characterized. A determination limit of 1 ppm has been achieved for these elements in tungsten.
D L Dugger; D Oblas
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Talanta     Volume:  24     ISSN:  0039-9140     ISO Abbreviation:  Talanta     Publication Date:  1977 Jul 
Date Detail:
Created Date:  2008-10-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  2984816R     Medline TA:  Talanta     Country:  England    
Other Details:
Languages:  eng     Pagination:  447-51     Citation Subset:  -    
GTE Laboratories, Waltham, Massachusetts 02154, U.S.A.
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