Fatty acids and Pb-210 geochronology of a sediment core from Buzzards Bay, Massachusetts

Details Fatty acids and Pb-210 geochronology of a sediment core from Buzzards Bay, Massachusetts Fatty acids and Pb-210 geochronology of a sediment core from Buzzards Bay, Massachusetts

Feb 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977gecoa..41..289f&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 41, Issue 2, pp.289-296

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6

Scientific paper

Four sections of a Pb-210 dated core of 62 cm length from Buzzards Bay, Massachusetts, were analyzed for fatty acids. A comparison of fatty acids extracted by Soxhlet extraction (unbound fatty acids) with fatty acids extracted by subsequent saponification extraction of the same sample (bound fatty acids) showed the former did not undergo diagenetic loss any faster than the latter. However, compositional differences between bound and unbound fatty acids were apparent in the top section of 1-2 cm and were less apparent in the 54-58 cm section. At least 14% of the bound fatty acids are esterified to non-solvent extractable material. The net conversion of fatty acids to other compounds is 32 /g dry weight sediment over the first 30 yr after deposition.

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