Organic matter in eolian dusts over the Atlantic Ocean
The elemental and mineralogical composition and the microfossil and detritus content of particulate fallout from the lower troposphere over the Atlantic Ocean have been extensively documented in earlier work, and it was possible to ascribe terrigenous source areas to such fallout. A brief review of...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19780036581 2023-05-15T17:33:38+02:00 Organic matter in eolian dusts over the Atlantic Ocean Simoneit, B. R. T. Unclassified, Unlimited, Publicly available Nov 1, 1977 http://ntrs.nasa.gov/search.jsp?R=19780036581 unknown http://ntrs.nasa.gov/search.jsp?R=19780036581 Accession ID: 78A20490 Copyright Other Sources 45 1977 ftnasantrs 2012-02-15T13:27:19Z The elemental and mineralogical composition and the microfossil and detritus content of particulate fallout from the lower troposphere over the Atlantic Ocean have been extensively documented in earlier work, and it was possible to ascribe terrigenous source areas to such fallout. A brief review of the organic geochemistry of eolian dusts is also presented here. The lipids of eolian dusts sampled from the air mass over the eastern Atlantic from about 35 deg N to 30 deg S were analyzed here. These lipids consisted mainly of normal alkanes, carboxylic acids and alcohols. The n-alkanes were found to range from n-C23 to n-C35 with high CPI values and maximizing at n-C27 in the North Atlantic, at n-C29 in the equatorial Atlantic and at n-C31 in the South Atlantic. The n-fatty acids had mostly bimodal distributions, ranging from n-C12 to n-C30 (high CPI), with maxima at n-C16 and in the northern samples at n-C24 and in the southern samples at n-C26. The n-alcohols ranged from n-C12 to n-C32, with high CPI values and maxima mainly at n-C28. The compositions of these lipids indicated that their terrigenous sources were comprised mainly of higher plant vegetation and desiccated lacustrine mud flats on the African continent. Other/Unknown Material North Atlantic NASA Technical Reports Server (NTRS) |
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NASA Technical Reports Server (NTRS) |
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45 Simoneit, B. R. T. Organic matter in eolian dusts over the Atlantic Ocean |
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45 |
description |
The elemental and mineralogical composition and the microfossil and detritus content of particulate fallout from the lower troposphere over the Atlantic Ocean have been extensively documented in earlier work, and it was possible to ascribe terrigenous source areas to such fallout. A brief review of the organic geochemistry of eolian dusts is also presented here. The lipids of eolian dusts sampled from the air mass over the eastern Atlantic from about 35 deg N to 30 deg S were analyzed here. These lipids consisted mainly of normal alkanes, carboxylic acids and alcohols. The n-alkanes were found to range from n-C23 to n-C35 with high CPI values and maximizing at n-C27 in the North Atlantic, at n-C29 in the equatorial Atlantic and at n-C31 in the South Atlantic. The n-fatty acids had mostly bimodal distributions, ranging from n-C12 to n-C30 (high CPI), with maxima at n-C16 and in the northern samples at n-C24 and in the southern samples at n-C26. The n-alcohols ranged from n-C12 to n-C32, with high CPI values and maxima mainly at n-C28. The compositions of these lipids indicated that their terrigenous sources were comprised mainly of higher plant vegetation and desiccated lacustrine mud flats on the African continent. |
author |
Simoneit, B. R. T. |
author_facet |
Simoneit, B. R. T. |
author_sort |
Simoneit, B. R. T. |
title |
Organic matter in eolian dusts over the Atlantic Ocean |
title_short |
Organic matter in eolian dusts over the Atlantic Ocean |
title_full |
Organic matter in eolian dusts over the Atlantic Ocean |
title_fullStr |
Organic matter in eolian dusts over the Atlantic Ocean |
title_full_unstemmed |
Organic matter in eolian dusts over the Atlantic Ocean |
title_sort |
organic matter in eolian dusts over the atlantic ocean |
publishDate |
1977 |
url |
http://ntrs.nasa.gov/search.jsp?R=19780036581 |
op_coverage |
Unclassified, Unlimited, Publicly available |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19780036581 Accession ID: 78A20490 |
op_rights |
Copyright |
_version_ |
1766132209617469440 |