Contamination des sédiments récents après leur prélèvement

Details Contamination des sédiments récents après leur prélèvement Contamination des sédiments récents après leur prélèvement

Apr 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975gecoa..39..531d&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 39, Issue 4, pp.531-534

Computer Science

Scientific paper

The hydrocarbon content of recent sediments is often very low. Consequently, account must be taken of the numerous possibilities of contamination, which may completely obscure analytical results and, therefore, their interpretation. Two new contaminants are described and their causes determined: (1) hydrocarbons, essentially even-numbered n -alkanes, from the polyethylene core sleeves of Kullenberg corers, (2) n -heptadecane, biosynthesized during the storage of wet sediments at 4°C, in darkness. In order to avoid these contaminants, it is advisable to core without plastic core sleeves, and to store the freeze-dried sediments in metal or glassware, under an inert atmosphere. Some of the conclusions of previously published works about hydrocarbons in recent sediments should be re-evaluated.

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