Diffusive sampling using tube-type adsorbent samplers can be applied to the measurement of volatile organic compounds (VOCs) in the air of homes and outdoors. In the present study samplers packed with Tenax TA have been used to investigate VOCs in the air of 44 homes and at 4 outdoor locations in the Southampton area of the UK as part of a study of the effects of measures for the alleviation of the symptoms of asthma. These measures included installation of mechanical ventilation with heat recovery (MVHR) systems in 20 of the homes. No significant changes in concentrations of 6 VOCs (benzene, toluene, xylene, decane, 1,2,4-trimethylbenzene and undecane) were observed following the MVHR installation. A range of other VOCs found in the homes is identified using mass spectrometry. Twelve different compounds were found to occur as the dominant peak in the chromatogram in one or more indoor air samples, whilst 63 different compounds appeared amongst the 10 biggest peaks.

Keywords:
Volatile organic compounds, Air, Adsorbent tubes, Diffusive sampling, Indoors
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1999
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