Bibliographic Citation
| Document | For copies of Journal Articles, please contact the Publisher or your local public or university library and refer to the information in the Resource Relation field. For copies of other documents, please see the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or Document Availability. |
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| Title | Comparison of quartz and pyrex tubes for combustion of organic samples for stable carbon isotope analysis |
| Creator/Author | Boutton, T.W. ; Wong, W.W. ; Hachey, D.L. ; Lee, L.S. ; Cabrera, M.P. ; Klein, P.D. |
| Publication Date | 1983 Sep 01 |
| OSTI Identifier | OSTI ID: 5035438 |
| Other Number(s) | CODEN: ANCHA |
| Resource Type | Journal Article |
| Resource Relation | Anal. Chem. ; Vol/Issue: 55:11 |
| Research Org | Texas Children`s Hospital, Houston |
| Subject | 400102 -- Chemical & Spectral Procedures; ;CARBON 13-- CHEMICAL ANALYSIS;COMBUSTION CHAMBERS-- COMPARATIVE EVALUATIONS;ORGANIC COMPOUNDS-- COMBUSTION; CARBON DIOXIDE;MASS SPECTROSCOPY;PYREX;QUARTZ;TUBES |
| Related Subject | BOROSILICATE GLASS;CARBON COMPOUNDS;CARBON ISOTOPES;CARBON OXIDES;CHALCOGENIDES;CHEMICAL REACTIONS;EVEN-ODD NUCLEI;GLASS;ISOTOPES;LIGHT NUCLEI;MINERALS;NUCLEI;OXIDATION;OXIDE MINERALS;OXIDES;OXYGEN COMPOUNDS;SILICON COMPOUNDS;SILICON OXIDES;SPECTROSCOPY;STABLE ISOTOPES;THERMOCHEMICAL PROCESSES |
| Description/Abstract | Most laboratories that perform routine stable carbon isotope determinations on organic samples employ a sealed-tube combustion method.^Because Pyrex tubing is approximately 14% of the cost of quartz tubing, /sup 13/C values and percent carbon obtained on a variety of organic substances have been compared using both the combustion in quartz tubing at 850/sup 0/ and in Pyrex tubing at 550/sup 0/C.^On the average, yields of carbon were 28% lower for the Pyrex method.^Despite incomplete combustion, mean /sup 13/C values were virtually identical for a given organic sample whether it was combusted by the quartz or Pyrex method.^Potential drawbacks of the Pyrex method include: susceptibility to cracking during rapid temperature change; incomplete combustion preventing quantitative analysis of carbon; and more variable replicate /sup 13/C determinations.^5 references, 1 table. |
| Country of Publication | United States |
| Language | English |
| Format | Pages: 1832-1833 |
| System Entry Date | 2001 May 13 |
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Last Updated: 02/08/2009