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A method for determination of the total dissolved free fatty-acid content of sea water

Published online by Cambridge University Press:  11 May 2009

Paul Treguer ,
Pierre Le Corre  and
Pierre Courtot
Paul Treguer
Affiliation:
Groupe d'Océanologie Chimique, Université de Bretagne Occidentale, Avenue Le Gorgeu, 29 N, Brest, France
Pierre Le Corre
Affiliation:
Groupe d'Océanologie Chimique, Université de Bretagne Occidentale, Avenue Le Gorgeu, 29 N, Brest, France
Pierre Courtot
Affiliation:
Groupe d'Océanologie Chimique, Université de Bretagne Occidentale, Avenue Le Gorgeu, 29 N, Brest, France
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Extract

A new method is proposed for the determination of total dissolved free fatty acids (FFA) in sea water. After preliminary extraction by chloroform, a copper complex is formed which is then extracted by a chloroform-heptane solution. Copper concentration is measured by atomic absorption spectrophotometry. The method is particularly adapted to the determination of long chain FFA (longer than C10) and dissolved organic matter usually present in sea water gives no interference. At the 30 μ/l. level the standard deviation is 1 μ/l. for seven determinations.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 52 , Issue 4 , November 1972 , pp. 1045 - 1055
Copyright
Copyright © Marine Biological Association of the United Kingdom 1972

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