Origin and significance of 13(2)-hydroxychlorophyll derivatives in sediments
The authenticity of hydroxychlorophyllderivatives in sediments has been verified by subjecting pure chlorophyll preparations to the extraction method used for sediments. Model studies of chlorophyll autoxidation reveal hydroxychlorophyll as the major product formed in the presence of hydrogen peroxi...
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ftnerc:oai:nora.nerc.ac.uk:17503 2023-05-15T13:45:12+02:00 Origin and significance of 13(2)-hydroxychlorophyll derivatives in sediments Walker, J. Stuart Squier, Angela H. Hodgson, Dominic A. Keely, Brendan J. 2002 http://nora.nerc.ac.uk/id/eprint/17503/ http://www.sciencedirect.com/science/article/pii/S014663800200178X unknown Elsevier Walker, J. Stuart; Squier, Angela H.; Hodgson, Dominic A. orcid:0000-0002-3841-3746 Keely, Brendan J. 2002 Origin and significance of 13(2)-hydroxychlorophyll derivatives in sediments. Organic Geochemistry, 33 (12). 1667-1674. 10,1016/S0146-6380(02)00178-X Chemistry Publication - Article PeerReviewed 2002 ftnerc 2023-02-04T19:31:09Z The authenticity of hydroxychlorophyllderivatives in sediments has been verified by subjecting pure chlorophyll preparations to the extraction method used for sediments. Model studies of chlorophyll autoxidation reveal hydroxychlorophyll as the major product formed in the presence of hydrogen peroxide. Its stability to further oxidation implies that hydroxychlorophyllderivatives are not precursors of aetioporphyrins and are more likely to produce cycloalkanoporphyrins via the processes of diagenesis. The occurrence of 132-hydroxyphaeophytin a throughout a sediment core from Loch Ness confirms it to be a widespread chlorophyll oxidation product formed during early diagenesis. Profiles of hydroxychlorophyllderivatives in a sediment core from an Antarctic lake demonstrate their potential for use as markers of oxidation processes in palaeoenvironmental assessment. Article in Journal/Newspaper Antarc* Antarctic Natural Environment Research Council: NERC Open Research Archive Antarctic |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
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unknown |
topic |
Chemistry |
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Chemistry Walker, J. Stuart Squier, Angela H. Hodgson, Dominic A. Keely, Brendan J. Origin and significance of 13(2)-hydroxychlorophyll derivatives in sediments |
topic_facet |
Chemistry |
description |
The authenticity of hydroxychlorophyllderivatives in sediments has been verified by subjecting pure chlorophyll preparations to the extraction method used for sediments. Model studies of chlorophyll autoxidation reveal hydroxychlorophyll as the major product formed in the presence of hydrogen peroxide. Its stability to further oxidation implies that hydroxychlorophyllderivatives are not precursors of aetioporphyrins and are more likely to produce cycloalkanoporphyrins via the processes of diagenesis. The occurrence of 132-hydroxyphaeophytin a throughout a sediment core from Loch Ness confirms it to be a widespread chlorophyll oxidation product formed during early diagenesis. Profiles of hydroxychlorophyllderivatives in a sediment core from an Antarctic lake demonstrate their potential for use as markers of oxidation processes in palaeoenvironmental assessment. |
format |
Article in Journal/Newspaper |
author |
Walker, J. Stuart Squier, Angela H. Hodgson, Dominic A. Keely, Brendan J. |
author_facet |
Walker, J. Stuart Squier, Angela H. Hodgson, Dominic A. Keely, Brendan J. |
author_sort |
Walker, J. Stuart |
title |
Origin and significance of 13(2)-hydroxychlorophyll derivatives in sediments |
title_short |
Origin and significance of 13(2)-hydroxychlorophyll derivatives in sediments |
title_full |
Origin and significance of 13(2)-hydroxychlorophyll derivatives in sediments |
title_fullStr |
Origin and significance of 13(2)-hydroxychlorophyll derivatives in sediments |
title_full_unstemmed |
Origin and significance of 13(2)-hydroxychlorophyll derivatives in sediments |
title_sort |
origin and significance of 13(2)-hydroxychlorophyll derivatives in sediments |
publisher |
Elsevier |
publishDate |
2002 |
url |
http://nora.nerc.ac.uk/id/eprint/17503/ http://www.sciencedirect.com/science/article/pii/S014663800200178X |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
Walker, J. Stuart; Squier, Angela H.; Hodgson, Dominic A. orcid:0000-0002-3841-3746 Keely, Brendan J. 2002 Origin and significance of 13(2)-hydroxychlorophyll derivatives in sediments. Organic Geochemistry, 33 (12). 1667-1674. 10,1016/S0146-6380(02)00178-X |
_version_ |
1766216342551134208 |