A Method for the determination of low concentration of organic vapours in air and exhaled breath

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      <subfield code="a">A Method for the determination of low concentration of organic vapours in air and exhaled breath</subfield>
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      <subfield code="a">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 individuals</subfield>
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