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Application of passive diffusion tubes to short-term indoor and personal exposure measurement of nitrogen dioxide

Heal, M.R. and O'Donoghue, M A and Agius, R.M. and Beverland, I J (1999) Application of passive diffusion tubes to short-term indoor and personal exposure measurement of nitrogen dioxide. Environment International, 25 (1). pp. 3-8. ISSN 0160-4120

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Abstract

Palmes-type passive diffusion tubes were shown to be as accurate in the measurement of indoor NO2 during short-term (2- and 3-d) exposures as during 1-week exposures. The statistical limit of detection for cumulative NO2 in 2- and 3-d exposure was 150 (nL L−1h). The mean coefficient of variation for duplicate 2- and 3-d exposures was < 13%. A pilot study measuring personal, indoor (living room) and outdoor (just outside the home) NO2 over 3 d for 8 volunteers demonstrated the feasibility and reliability of using passive diffusion tubes for short-term personal exposure measurements, and confirmed the necessity of obtaining actual exposure profiles for a specific subpopulation.