Optimal conditions of heating for an acrylic varnish have been determined by a study with a Setaram apparatus (simultaneous TG-DTA). While the dry var nish underwent thermal decomposition, the carbonyl compounds emitted were adsorbed on silica cartridges and separated by high-performance liquid chromatography. The thermal decomposition up to 650 ° C and up to 350 ° C showed that formaldehyde and acetaldehyde were the predominant toxic car bonyl compounds. Acrolein was found only when the varnish was heated up to 650°C; it was not emitted when heating was limited to 350°C. These experi mental results are compared with analyses performed in the industrial sector.
Lipari F., Swarin SJ: 2-4-Dinitrophenylhydrazine coated florisil sampling cartridges for the determination of formaldehyde in air. Environ Sci Technol1985;19:70-74.
2.
Kirscher P.: Aldehydes in air. Analysis1992;20: 48-50.
3.
Kuwata K., Vebori M., Yamasaki Y.: Determination of aliphatic and aromatic aldehydes in polluted air as their 2,4-dinitrophenylhydrazones by high performance liquid chromatography. J ChromatogrSci1979;17:264-268.
4.
Arfi C., Renacco E., Pauli AM, Pastor J.: Etude du comportement thermique d'une mousse isolante urée-formol. J Therm Anal1988 ;34:523-529.
5.
Arfi C., Renacco E., Pauli AM, Pastor J., Grimaldi F., Gouezo F., Viala A.: Mousse isolante urée-formol, humidité et pollution de l'air par le formaldéhyde . Man Ecosyst1989; 1:351-356.
