Chlorine isotope effects in ion exchange chromatography

Journal Article · Thu Jan 01 00:00:00 EST 1976 · Angew. Chem. Int. Ed. Engl.; (United States)

DOI:https://doi.org/10.1002/anie.197600551· OSTI ID:7364395

Heumann, K G; Hoffmann, R

Ion exchange chromatographic studies were carried out to study the isotope effects in anion exchange equilibria and to test the possibility of chromatographic chlorine isotope enrichment. Samples of NaCl containing natural isotope abundance were applied to columns packed with the strongly basic anion exchanger AG1-X10 in the nitrate form and were eluted with 0.01-1M NaNO/sub 3/. An enrichment of /sup 37/Cl/sup -/ in the first fraction and a depletion in the last fraction are attributed to the assumption that /sup 35/Cl/sup -/ has a slightly larger ionic radius than /sup 37/Cl/sup -/. Steady state experiments indicated that the isotope effect was not kinetic in origin. A variation of the isotope effect with eluant concentration is attributed to differential modification of the activity coefficients of the isotopes in the ion exchanger phase and in the aqueous phase. (BLM)

• Research Organization: Univ., Regensburg, Ger.
• OSTI ID: 7364395
• Journal Information: Angew. Chem. Int. Ed. Engl.; (United States), Journal Name: Angew. Chem. Int. Ed. Engl.; (United States) Vol. 15:1; ISSN ACIEA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202* -- Isotope Effects
Isotope Exchange
& Isotope Separation
400203 -- Isotope Exchange & Isotope Separation-- (-1987)
CHLORINE 35
CHLORINE 37
CHLORINE ISOTOPES
CHROMATOGRAPHY
ION EXCHANGE CHROMATOGRAPHY
ISOTOPE EFFECTS
ISOTOPE SEPARATION
ISOTOPES
KINETICS
LIGHT NUCLEI
NUCLEI
ODD-EVEN NUCLEI
REACTION KINETICS
SEPARATION PROCESSES
STABLE ISOTOPES