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Problems Associated with the Use of Coal As a Source of 14C-Free Background Material

Published online by Cambridge University Press:  18 July 2016

David C Lowe
David C Lowe*
Affiliation:
National Center for Atmospheric Research * , Boulder, Colorado 80307
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Abstract

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Many 14C dating laboratories have established that coal samples exhibit a finite 14C age, apparently caused by contamination of the specimens before any laboratory preparation is undertaken. In this work, the possibility that the contamination is due to microbial and fungal activity in the coal substrate is considered and some suggestions are made for alternative sources of background test materials for 14C dating laboratories. Initial results indicate that geologically formed graphites contain little 14C and are likely to be good background test materials, especially in 14C AMS laboratories.

Type
Research Article
Information
Radiocarbon , Volume 31 , Issue 2 , 1989 , pp. 117 - 120
Copyright
Copyright © The American Journal of Science 

References

Blendowski, R, Fliessbach, T and Walliser, H, 1987, Microscopic calculation of the 14C decay of radium nuclei: Nuclear Physics, v 464A, p 75–89.CrossRefGoogle Scholar
Cohen, M S and Aronson, H, 1987, Microbial degradation of coal by Polyporus versicolor: Metabolism and product characterization: Electric Power Research Inst Rept EPRI AP-5013-SR, Palo Alto, California.Google Scholar
Cohen, M S and Gabrielle, P D, 1982, Degradation of coal by the fungi Polyporus versicolor and Poria montiola: Appl Environ Microbiol, v44, p 23–27.CrossRefGoogle Scholar
Ehrlich, H L, 1981, Geomicrobiology: New York, Marcel Dekker, Inc, p 251–281.Google Scholar
Greenwell, G, 1987, It's a dirty job; microbes could do it; process coal and ore and control pollution: Sci American, v 257, p 47–48.CrossRefGoogle Scholar
Haggin, J, 1988, Argonne program provides reliable, stable coal samples for research: Chemical Eng News, Oct 3, p 29–32.CrossRefGoogle Scholar
Jull, A J T, Barker, D L and Donahue, D J, 1987, On the 14C content in radioactive ores: Chem Geol, v 66, p 35–40.Google Scholar
Olson, G J and Brinckmann, F E, 1986, Bioprocessing of coal: Fuel, v 65, p 1638–1646.CrossRefGoogle Scholar
Paca, J and Gregr, V, 1977, Utilization of coal oxidation products by bacteria—Part 1: Process Biochem, v 12, p 14–17.Google Scholar
Rose, H J and Jones, G A, 1984, A new kind of natural radioactivity: Nature, v 307, p 245–247.CrossRefGoogle Scholar
Singer, P C and Stumm, W, 1979, Acidic mine drainage: The rate-determining step: Science, v 167, p 1121–1123.Google Scholar
Vogel, J S, Nelson, D E and Southon, J R, 1987, 14C background levels in an accelerator mass spectrometry system: Radiocarbon,, v 29, no. 3, p 323–333.CrossRefGoogle Scholar
Wixson, G B, Page, A L, Beckner, J L, Hamilton, L D and Neavel, R C, 1980, The resource and its utilization: Coal formation, in Trace element geochemistry of coal resource development related to environmental quality and health: Washington, DC, Natl Acad Press.Google Scholar