DETERMINATION BY CAPILLARY GAS-CHROMATOGRAPHY OF PYROMELLITIC ACID THROUGH CONVERSION TO TETRAETHYLTRIFLUORO AND TETRAMETHYLESTERS

Authors
RUSSO MV GORETTI G LIBERTI A
Citation
Mv. Russo et al., DETERMINATION BY CAPILLARY GAS-CHROMATOGRAPHY OF PYROMELLITIC ACID THROUGH CONVERSION TO TETRAETHYLTRIFLUORO AND TETRAMETHYLESTERS, Analusis, 23(3), 1995, pp. 128-130
Citations number
11
Categorie Soggetti
Chemistry Analytical
Journal title
Analusis → ACNP
ISSN journal
03654877
Volume
23
Issue
3
Year of publication
1995
Pages
128 - 130
Database
ISI
SICI code
0365-4877(1995)23:3<128:DBCGOP>2.0.ZU;2-#
Abstract
An analytical procedure for the determination of pyromellitic acid is described, consisting in its conversion to tetraethyltrifluoroester by means of 2,2,2-trifluoroethanol. The chromatographic behaviour of the resulting ester, pyromellitic tetra(2,2,2-trifluoroethyl)ester, has b een characterized by GC-MS. The determination is carried out by capill ary GC and an electron capture detector. The procedure has been develo ped in order to determine traces of pyromellitic acid, which might be used in the manufacturing of polyethylenterephthalate plastics (PET) a nd to evaluate the migration of this compound in bottles filled either with water or acetic acid solution.