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14C in Extractives from Wood

Published online by Cambridge University Press:  18 July 2016

Ingrid U Olsson
Ingrid U Olsson*
Affiliation:
Institute of Physics, Uppsala University, Box 530, S-751 21 Uppsala, Sweden
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Abstract

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Two Pinus aristata samples submitted by C W Ferguson were separated in different fractions, as was done earlier with Pinus silvestris L from Sweden, to yield different fractions for studies of the pretreatment. One sample in this new series consisted of heartwood and the second of sapwood.

The treatment performed in the radiocarbon laboratory involved an acid treatment by boiling, washings, an hydroxide treatment at 80°C, washings and, finally, another acid treatment before being dried before the combustion. The sodium-hydroxide treatment was repeated to yield at least two soluble and two insoluble fractions.

The treatment performed by the wood chemists involved extractions with ethanol-benzene and water. The remaining wood was dated but was also used for the production of holocellulose. The extractives were partitioned between ethyl ether and water and that from the older wood was used for the isolation of neutrals, acids, and phenols. In all, 19 fractions of these two wood samples were dated.

It is confirmed that a treatment for 30 min in sodium hydroxide at 80°C is not sufficient to remove the extractives from the heartwood or the sapwood. A treatment at 80°C overnight with 1 percent NaOH yielded a sample from the older wood with a 14C content in good agreement with the results predicted from the curve presented by Stuiver (1978). The final statistical uncertainty in the present investigation was ca 4‰. The younger wood yielded results indicating a lower activity than that given by Stuiver.

Type
Dating Various Materials
Information
Radiocarbon , Volume 22 , Issue 2 , 1980 , pp. 515 - 524
Copyright
Copyright © The American Journal of Science 

References

Berger, Rainer, 1970, Ancient Egyptian radiocarbon chronology: Royal Soc [London] Philos Trans A, v 269, p 23–36.CrossRefGoogle Scholar
Berger, Rainer 1973, Tree-ring calibration of radiocarbon dates, in Rafter, T A and Grant-Taylor, T, eds, Internatl radiocarbon conf, 8th, Proc: Wellington, Royal Soc New Zealand, p A97-A103.Google Scholar
Jansen, H S, 1970, Secular variations of radiocarbon in New Zealand and Australian trees, in Olsson, I U, ed, Radiocarbon variations and absolute chronology, Nobel symposium 12, Proc: Stockholm, Almqvist and Wiksell, and New York, Tohn Wiley & Sons, p 261–274.Google Scholar
Jansen, H S 1973, Transfer of carbon from solvents to samples, in Rafter, T A and Grant-Taylor, T, eds, Internatl radiocarbon conf, 8th, Proc: Wellington, Royal Soc New Zealand, p B63-B68.Google Scholar
Libby, L M and Pandolfi, L J, 1976, Isotopic tree thermometers: Correlation with radiocarbon: Jour Geophys Research, v 81, p 6377–6381.Google Scholar
Long, Austin, Arnold, L D, Damon, P E, Ferguson, C W, Lerman, J C, and Wilson, A T, 1979, Radial translocation of carbon in bristlecone pine, in Berger, Rainer and Suess, H E, eds, Radiocarbon dating, Internatl radiocarbon conf, 9th, Proc: Berkeley/Los Angeles, Univ California Press, p 532–537.Google Scholar
Long, Austin and Lerman, J C, 1977, Stable isotopes in terrestrial organic material as paleoclimatic indicators: Summary of progress and request for renewal of support subm to Natl Sci Foundation, 61 p.Google Scholar
Olsson, I U, 1958, A C14 dating station using the CO2 proportional counting method: Arkiv f Fysik, v 13, p 37–60.Google Scholar
Olsson, I U 1966, Computer calculations of C14 determinations: Uppsala Univ Inst Physics rept, UUIP-447, 11 p.Google Scholar
Olsson, I, ed, 1970, Radiocarbon variations and absolute chronology. Nobel symposium 12, Proc: Stockholm, Almqvist and Wiksell, and New York, John Wiley & Sons.Google Scholar
Olsson, I 1979, The importance of the pretreatment of wood and charcoal samples, in Berger, Rainer and Suess, H E, eds, Radiocarbon dating, Internatl radiocarbon conf, 9th, Proc: Berkeley/Los Angeles, Univ California Press, p 135–146.Google Scholar
Olsson, I U, El-Daoushy, MFAF, Abd-El-Mageed, Abdalla, and Klasson, Martin, 1974, A comparison of different methods for pretreatment of bones. I: Geol Fören Stockholm Förh, v 96, p 171–181.CrossRefGoogle Scholar
Olsson, I U, El-Gammal, Shawky, and Göksu, Yeter, 1969, Uppsala natural radiocarbon measurements IX: Radiocarbon, v 11, p 515–544.Google Scholar
Olsson, I U, Klasson, Martin, and Abd-El-Mageed, Abdalla, 1972, Uppsala natural radiocarbon measurements XI: Radiocarbon, v 14, p 247–271.Google Scholar
Olsson, I U, and Osadebe, FAN, 1974, Carbon-isotope variations and fractionation corrections in 14C dating: Boreas, v 3, p 139–146.Google Scholar
Stuiver, Minze, 1978, Radiocarbon timescale tested against magnetic and other dating methods: Nature, v 273, p 271–274.CrossRefGoogle Scholar
Stuiver, Minze and Robinson, S W, 1974, University of Washington Geosecs North Atlantic carbon-14 results: Earth and Planetary Sci Letters, v 23, p 87–90.Google Scholar
Tans, P P, de Jong, A F M, and Mook, W G, 1978, Chemical pretreatment and radial flow of 14C in tree rings: Nature, v 271, p 234–235.Google Scholar
Wilson, A T, 1961, Carbon-14 from nuclear explosions as a short-term dating system: Use to determine the origin of heartwood: Nature, v 191, p 714.Google Scholar
Wilson, A T and Grinsted, M J, 1977, 12C/13C in cellulose and lignin as palaeothermometers: Nature, v 265, p 133–135.Google Scholar
Wilson, A T, Gumbley, J M, and Speddin, D J, 1963, Resin metabolism in the sapwood of Pinus radiata: Nature, v 198, p 500.Google Scholar