Natural fluorinated organics in fluorite and rocks

Details Natural fluorinated organics in fluorite and rocks Natural fluorinated organics in fluorite and rocks

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000georl..27.1883h&link_type=abstract

Geophysical Research Letters, Volume 27, Issue 13, p. 1883-1886

Mathematics

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8

Atmospheric Composition And Structure: Geochemical Cycles, Global Change: Atmosphere, Mineralogy And Petrology

Scientific paper

Results of measurements of fluorinated compounds in gasses extracted from igneous and metamorphic rocks are reported. A new extraction method analogous to a pepper mill for geological samples is described. It permits extraction at low temperatures and ensures a rapid transfer of extracted gases from active surfaces to cryogenic pre-concentration loop. Values for CF4, CF3Cl, CF2Cl2, CFCl3, CHF3, SF6 and NF3 in fluorites, granites, basalts and other igneous and metamorphic rocks are reported. It is proposed that trifluoroacetic acid (TFA) that was recently discovered in various environmental archives could also origin from similar geogenic sources.

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