TY - JOUR
T1 - Equilibrium and non-equilibrium partition of tritium between organics and tissue water of different biological systems
AU - Kim, Maria Anna
AU - Baumgärtner, Franz
N1 - Funding Information:
Acknowledgements-Thiws ork has been performed partly under the research contract of the Commissions of European Communities (CEC). Helpful comments and discus-sions have been contributed by Professor Dr H. Ziegler, Technischettochschhle Miinchen. Dr E. G&z. Universitat
PY - 1994/3
Y1 - 1994/3
N2 - The biological tritium fractionation factor, accompanying the equilibrium partition of tritium between the organic and the aqueous phases of the biosystem through isotope effects on the enzyme reactions of its metabolism, has been determined. The ratio (R) of the specific activities of organically bound tritium and tissue water tritium has been measured under special conditions to eliminate analytical as well as biological interfering effects that possibly alter the experimental R value. Two plant categories with distinct photosynthetic CO2-fixation pathways, adapted to their different water use efficiency, namely barley (C3 plant) and maize (C4 plant), have been compared in order to estimate the natural variation of the biological tritium fractionation factors among different biosystems.
AB - The biological tritium fractionation factor, accompanying the equilibrium partition of tritium between the organic and the aqueous phases of the biosystem through isotope effects on the enzyme reactions of its metabolism, has been determined. The ratio (R) of the specific activities of organically bound tritium and tissue water tritium has been measured under special conditions to eliminate analytical as well as biological interfering effects that possibly alter the experimental R value. Two plant categories with distinct photosynthetic CO2-fixation pathways, adapted to their different water use efficiency, namely barley (C3 plant) and maize (C4 plant), have been compared in order to estimate the natural variation of the biological tritium fractionation factors among different biosystems.
UR - http://www.scopus.com/inward/record.url?scp=0028401552&partnerID=8YFLogxK
U2 - 10.1016/0969-8043(94)90050-7
DO - 10.1016/0969-8043(94)90050-7
M3 - Article
C2 - 8148834
AN - SCOPUS:0028401552
SN - 0969-8043
VL - 45
SP - 353
EP - 360
JO - Applied Radiation and Isotopes
JF - Applied Radiation and Isotopes
IS - 3
ER -