Carbon-13 fractionation in the oxidation of propionate of natural isotopic composition with permanganate and manganate

• Autorzy: Zieliński M. , Fry A. , Zielińska A. , Ogrinc N. , Papiernik-Zielińska H. , Kobal I.
• Języki publikacji: EN

Abstrakty

EN

Carbon-13 fractionation in the oxidation of sodium propionate of natural isotopic composition with permanganate in water solution and with manganate in alkaline solution has been investigated and compared with carbon-14 kinetic isotope effects in the oxidation of (3-14C) – and (2-14C) propionate with permanganate. The experimental carbon-13 isotope ratios, R(13C/12C)cumul., corrected for dilution of R(13C/12C)a by carbon dioxide derived from all external sources and by carbon dioxide derived from (C-1) and from (C-3) of propionate at its complete and partial oxidations, used for calculation of 13C alfa KIE, provided the carbon-13 isotope effects corresponding to initial oxidation of alpha carbon, which correlate well with (2-14C) KIE determined previously, (k12/k13 -1)?100 ? 1/2(k12/k14 -1)?100 ? 1/2(4.6š0.3) at 373 K. The possibility of extension of isotope ratio measurements, using modern double collector mass spectrometers, from geochemical, biomedical, agriculture and environmental research to carbon-13 isotope effects studies in chemical organic reactions is briefly discussed.

Słowa kluczowe

EN

carbon-13; carbon-14; fractionation; manganate; oxidation; permanganate; propionate

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2000
• Tom: Vol. 45, nr 4
• Strony: 221--224
• Opis fizyczny: Bibliogr. 23 poz., rys.

Twórcy

autor

Zieliński M.

autor

Fry A.

autor

Zielińska A.

autor

Ogrinc N.

autor

Papiernik-Zielińska H.

autor

Kobal I.

• Faculty of Chemistry, Jagiellonian University, 3 Ingardena Str., 30-060 Cracow, Poland, Fax: [phone]