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MAP20071017150Gage, J.C.A Method for the determination of low concentration of organic vapours in air and exhaled breath / J.C. Gage, V. Lagesson and A. TunekSumario: A method is described for the determination of low concentrations of organic vapours in air and in exhaled breath. A measured volume is sample through a tube containing silica gel, then the vapour is desorbed with water in a closed tube and a sample of the head space air is taken for analysis by gas-liquid chromatography. The limit of sensitivity and maximal loading on the silica gel have been determined for benzene, n-butanol, acetone, hexane and trichloroethylene in street air and in the breath of non-occupationally exposed individualsEn: The Annals of occupational hygiene. - Oxford [etc.]. - nº 2, October 1977 ; p. 127-1341. Higiene industrial. 2. Contaminantes químicos. 3. Contaminación atmosférica. 4. Control de la contaminación. 5. Benceno. 6. Acetona. 7. N-hexano. 8. Tricloroetileno. 9. Vapores orgánicos. 10. Técnicas cromatográficas. 11. Métodos de control. 12. Motores. 13. Fuel. I. Lagesson, V.. II. Tunek, A.. III. Título. IV. Título: The Annals of occupational hygiene.