[en] Possible fractionation effects of carbon isotopes during sampling mineral waters containing dissolved inorganic carbon are discussed. The discussion is based on selected literature data and some experiments on carbon isotope fractionation in mineral water during outgasing the sample in open system conditions. It was found that CO2 diffused from water to the air is enriched in 13C by 7.8 0/00. The authors recommend handling samples in closed system conditions in which maximal isotopic fractionation of about 1 0/00 is possible. (author)
Akademie der Wissenschaften der DDR, Leipzig. Zentralinstitut fuer Isotopen- und Strahlenforschung; 340 p; Jun 1980; p. 57-68; 2. workshop on isotopes in nature; Leipzig, German Democratic Republic; 5 - 9 Nov 1979