Published:Journal of Chromatographic Science,
ISSN 0021-9665Volume
38, Number 9, September 000, pp. 369-376
Performance
of Capillary Columns for High-Temperature Gas ChromatographyAlberto
dos Santos Pereira and Francisco Radler de Aquino Neto*
LADETEC, Instituto de Química, Universidade Federal
do Rio de Janeiro, Ilha do Fundão, CT, Bloco A, Sala 607, Rio de Janeiro,
RJ, 21949-900, Brazil
The developments
in stationary-phase synthesis and capillary column technology have opened new
perspectives in the analysis of high-molecular-weight compounds (600 daltons)
and thermolabile organic compounds by high-temperature-high-resolution gas chromatography.
This branch of high-resolution gas chromatography deals with analysis performed
up to 390°C oven temperature (with some applications going up to 420°C
and even a few applications to 450°C maximum). The technique has been applied
to many different fields of science (e.g., organic geochemistry, environmental
chemistry, archeology, and natural product research). Apolar and medium-polar
gum phases can now be operated at temperatures from 400 to 480°C, but these
higher temperatures are seldom used because of the thermostability of the material
used to make the capillary tubing. This paper shows the performance of nine
commercial high-temperature columns when used in routine applications.
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