The influence of pretreatment on humic acid yield and 14C age Carex peat
The object of the study was to assess the effects of a range of pretreatment/extraction schemes on the yields of humic acid and humin obtained from peat and the subsequent radiocarbon ages. We analyzed peat from Flókadalur in northern Iceland, collecting material from a profile containing seven visi...
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University of Arizona
1998
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ftuglasgow:oai:eprints.gla.ac.uk:7890 2024-06-02T08:09:18+00:00 The influence of pretreatment on humic acid yield and 14C age Carex peat Cook, G.T. Dugmore, A.J. Shore, J.S. 1998 https://eprints.gla.ac.uk/7890/ http://digitalcommons.library.arizona.edu/holdings/journal?r=http://radiocarbon.library.arizona.edu/ unknown University of Arizona Cook, G.T. <http://eprints.gla.ac.uk/view/author/5255.html>, Dugmore, A.J. and Shore, J.S. (1998) The influence of pretreatment on humic acid yield and 14C age Carex peat. Radiocarbon <https://eprints.gla.ac.uk/view/journal_volume/Radiocarbon.html>, 40(1), pp. 21-27. QD Chemistry QH Natural history Articles PeerReviewed 1998 ftuglasgow 2024-05-06T15:05:45Z The object of the study was to assess the effects of a range of pretreatment/extraction schemes on the yields of humic acid and humin obtained from peat and the subsequent radiocarbon ages. We analyzed peat from Flókadalur in northern Iceland, collecting material from a profile containing seven visible tephra horizons in the upper 3 m, whose form and extent indicated little disturbance to the section over the last 4000 yr. The results of a range of pretreatments demonstrated that time rather than the strength of alkali is the more important factor governing the extraction of humic acid. An increase in alkali molarity did not correspond to any systematic increase in yield, whereas an increase in time did, implying that the extraction is kinetically controlled. We found no evidence of variability in 14C age due to pretreatment scheme or between different geochemical fractions of the peat. Further implications from this study are that bog stability and ecological simplicity produce a favorable environment for 14C dating. Article in Journal/Newspaper Iceland University of Glasgow: Enlighten - Publications |
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University of Glasgow: Enlighten - Publications |
op_collection_id |
ftuglasgow |
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topic |
QD Chemistry QH Natural history |
spellingShingle |
QD Chemistry QH Natural history Cook, G.T. Dugmore, A.J. Shore, J.S. The influence of pretreatment on humic acid yield and 14C age Carex peat |
topic_facet |
QD Chemistry QH Natural history |
description |
The object of the study was to assess the effects of a range of pretreatment/extraction schemes on the yields of humic acid and humin obtained from peat and the subsequent radiocarbon ages. We analyzed peat from Flókadalur in northern Iceland, collecting material from a profile containing seven visible tephra horizons in the upper 3 m, whose form and extent indicated little disturbance to the section over the last 4000 yr. The results of a range of pretreatments demonstrated that time rather than the strength of alkali is the more important factor governing the extraction of humic acid. An increase in alkali molarity did not correspond to any systematic increase in yield, whereas an increase in time did, implying that the extraction is kinetically controlled. We found no evidence of variability in 14C age due to pretreatment scheme or between different geochemical fractions of the peat. Further implications from this study are that bog stability and ecological simplicity produce a favorable environment for 14C dating. |
format |
Article in Journal/Newspaper |
author |
Cook, G.T. Dugmore, A.J. Shore, J.S. |
author_facet |
Cook, G.T. Dugmore, A.J. Shore, J.S. |
author_sort |
Cook, G.T. |
title |
The influence of pretreatment on humic acid yield and 14C age Carex peat |
title_short |
The influence of pretreatment on humic acid yield and 14C age Carex peat |
title_full |
The influence of pretreatment on humic acid yield and 14C age Carex peat |
title_fullStr |
The influence of pretreatment on humic acid yield and 14C age Carex peat |
title_full_unstemmed |
The influence of pretreatment on humic acid yield and 14C age Carex peat |
title_sort |
influence of pretreatment on humic acid yield and 14c age carex peat |
publisher |
University of Arizona |
publishDate |
1998 |
url |
https://eprints.gla.ac.uk/7890/ http://digitalcommons.library.arizona.edu/holdings/journal?r=http://radiocarbon.library.arizona.edu/ |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
Cook, G.T. <http://eprints.gla.ac.uk/view/author/5255.html>, Dugmore, A.J. and Shore, J.S. (1998) The influence of pretreatment on humic acid yield and 14C age Carex peat. Radiocarbon <https://eprints.gla.ac.uk/view/journal_volume/Radiocarbon.html>, 40(1), pp. 21-27. |
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1800754988869222400 |