View PDF Version
 
DOI: 10.1039/A701722G (Paper) Reference Section for: Analyst, 1997, 122, 995-998

Trace Determination of Strong Acids in NitroPlasticizers

(Note: The full text of this document is currently only available in the PDF Version )

Sylvain Désilets and Sylvie Villeneuve

Abstract

A titration method was applied to the trace determination of strong acids in a variety of nitro plasticizers. The analyses were performed in acetonitrile using an automatic titrator and a calomel combined glass electrode for non-aqueous solutions. A dilute solution of sodium hydroxide (5.00 × 10-4M) in methanol was used as the titrant. The sensitivity and precision of the method were greatly increased by the addition of a known volume of dilute nitric acid to the solvent in which the titrations were performed. Very low acid content values were detected in the plasticizers with the experimental conditions used. The detection limit was found to be 0.001 mg g-1 of NaOH in the sample (0.000025 m equiv. g-1) and the measured acid content values were reproducible.

References

  1. M. A. Hiskey, K. R. Brower and J. C. Oxley, J. Phys. Chem, 1991, 95, 3955 CrossRef CAS.
  2. L. M. Druet and M. Asselin, J. Energ. Mater., 1988, 6, 27 Search PubMed.
  3. The Merck Index—An Encyclopedia of Chemicals, Drugs and Biologicals, Merck, Rahway, NJ, USA, 10th edn., 1983, p. 947 Search PubMed.
  4. M. R. Legrand, A. J. Aristarain and R. J. Delmas, Anal. Chem., 1982, 54, 1336 CAS.
  5. J. Kucharsky and L. Safarik, Titrations in Non-aqueous Solvents, Elsevier, Amsterdam, 1965 Search PubMed.
  6. B. Saigal, G. K. Joshi and H. K. Khatri, Asian J. Chem., 1993, 5, 366 Search PubMed.
  7. N. I. Denisova and A. A. Golubeva, J. Anal. Chem. USSR, 1972, 27, 1221 Search PubMed.
  8. K. Molt and Y. J. Cho, J. Mol. Struct., 1995, 349, 345 CrossRef CAS.
  9. L. Meites, N. Faneli and P. Papoff, Anal. Chim. Acta, 1987, 192, 33 CrossRef CAS.
  10. Y. C. Wu, D. Feng and W. F. Koch, J. Solution Chem., 1989, 18, 641 CrossRef CAS.
  11. E. J. Rogeberg and T. Kallqvist, Vatten, 1988, 44, 89 Search PubMed.
  12. K. Lindroos, Analyst, 1987, 112, 71 RSC.
  13. T. Nakashima and K. H. Lieser, Radiochim. Acta, 1986, 39, 149 CAS.
  14. G. M. Shutov, V. K. Berg, R. G. Chirkova and E. Y. Orlova, J. Anal. Chem. USSR, 1972, 27, 807 Search PubMed.
  15. R. L. Tanner, Adv. Chem. Ser., 1993, 232, 229 Search PubMed.
  16. P. Koutrakis, J. M. Wolfson and J. D. Spengler, Atmos. Environ., 1988, 22, 157 CrossRef CAS.
  17. E. Grunwald, Anal. Chem., 1954, 26, 1696 CrossRef CAS.
Click here to see how this site uses Cookies. View our privacy policy here.