Journal of Radioanalytical Chemistry

, Volume 13, Issue 1, pp 67–74 | Cite as

Investigation and radiometric determination of saturated and unsaturated aliphatic monocarboxylic acids and aromatic dicarboxylic acids

  • Cs. Ömböly
  • T. Szarvas
  • G. Végh
Article
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Abstract

Investigations have been carried out on the precipitation of calcium salts of saturated and unsaturated aliphatic monocarboxylic acids and of aromatic dicarboxylic acids. The optimum ethanol/water solvent ratio has been studied at which the sodium, ammonium or triethylammonium salts of the acids have a good solubility, whereas the calcium salts are poorly soluble and can be precipitated. Based on these investigations the radiometric determination of formic acid, palmitic acid, stearic acid, methacrylic acid, oleic acid, and o-, m- and p-phthalic acids has become possible. A linear correlation has been found between the solubilities of the calcium salts of o-, m- and p-phthalic acids and the dielectric constant of the solvent mixture. CaCl2 solution labelled with45CaCl2 was used for the titrations, with a solvent composition identical to that of the solution to be titrated. Radiometric titrations were carried out in 0.05M solutions for dicarboxylic acids, and in 0.1M solutions for monocarboxylic acids. For palmitic and stearic acids titrations were also carried out in the 0.01M concentration range. The equipment used for titrations was capable of detecting isotopes of soft β-radiation.

Keywords

Stearic Acid Methacrylic Acid Phthalic Acid Monocarboxylic Acid Calcium Salt 

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References

  1. 1.
    I. S. Fritz, Acid-Base Titrations in Non-aqueous Solvents, G. F. Smith Chemical Co., Columbus, Ohio, 1952.Google Scholar
  2. 2.
    R. S. Talit, M. N. Das, G. R. Somayayulu, Non-aqueous Titrations, Indian Assoc. for the Cultivation of Science, Calcutta, 1954.Google Scholar
  3. 3.
    T. Tasinaki, Analiza miareczkova w srodowiskoch niewodnych, Panstwome Wydawnictwo Naukova, Warsaw, 1956.Google Scholar
  4. 4.
    A. P. Kreshkhow, Supplement toR. S. Talit, M. N. Das, G. R. Somayayulu, Nevodnoe titrovanie, Goskhimizdat, Moscow, 1958.Google Scholar
  5. 5.
    I. Gyenes, Titration in Non-aqueous Solvents, Akadémiai Kiadó, Budapest, 1967.Google Scholar
  6. 6.
    I. Kucharsky, L. Safarik, Titration in Non-aqueous Solvents, Elsevier, Amsterdam, 1965.Google Scholar
  7. 7.
    V. S. Cherny, E. I. Vayl, N. A. Izmaylov,Trudy Kom. Analit. Khim., Akad. Nauk. SSSR 13 (1963) 445.Google Scholar
  8. 8.
    Cs. Ömböly, T. Szarvas, G. Végh J., Radioanal. Chem., 9 (1971) 229.Google Scholar
  9. 9.
    Cs. Ömböly, T. Szarvas, G. Végh. J. Radioanal. Chem., 4 (1970) 215.Google Scholar
  10. 10.
    N. A. Izmaylov, I. V. Krasovskii, V. V Alexandrov, E. I. Vayl,Dokl. Akad. Nauk SSSR, 74 (1950) 91.Google Scholar
  11. 11.
    S. A. Voskrenskii, R. S. Bochtimirov,Zh. Neorg. Khim., 2 (1957) 942.Google Scholar
  12. 12.
    N. A. Izmaylov, V. S. Cherny,Zh. Fiz. Khim., 24 (1960) 129, 319.Google Scholar

Copyright information

© Akadémiai Kiadó 1973

Authors and Affiliations

  • Cs. Ömböly
    • 1
  • T. Szarvas
    • 1
  • G. Végh
    • 1
  1. 1.Institute for Isotopes of the Hungarian Academy of SciencesBudapest(Hungary)

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