Thermal decomposition of surface compounds for the generation of small quantities of acetaldehyde: Calibration of a thermal desorption-gas chromatography-flame ionization detection |
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| Authors: | El?bieta Przyk Piotr Konieczka Jan F. Biernat |
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| Affiliation: | a Department of Analytical Chemistry, Chemical Faculty, Gdansk University of Technology, 11/12 Narutowicza St. 80-952 Gdańsk, Poland
b Department of Chemical Technology, Chemical Faculty, Gdansk University of Technology, 11/12 Narutowicza St. 80-952 Gdańsk, Poland |
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| Abstract: | The paper presents a new method for the generation of acetaldehyde in the amounts that allow to calibrate the measuring system. The method is based on thermal decomposition of surface compounds at the range 130-190 °C, in which an acetaldehyde as the decomposition product is released. The synthetic pathway leading to the desired surface compounds is described. Investigations demonstrated that the synthesis of the compounds on the surface of the support material (silica gel) was carried out homogeneously. The technique proposed was used for the generation of gaseous standard mixtures containing acetaldehyde for the calibration of a thermal desorber-gas chromatograph-flame ionization detector system. |
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| Keywords: | Acetaldehyde Chemical modification of silica gel surface Surface compounds Thermal decomposition Gaseous standard mixtures |
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