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Validation of a dif...
Validation of a diffusive sampler for NO2
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- Hagenbjörk-Gustafsson, Annika, 1956- (författare)
- Umeå universitet,Yrkes- och miljömedicin
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- Lindahl, Roger (författare)
- Umeå universitet,Kemiska institutionen
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- Levin, Jan-Olof (författare)
- Umeå universitet,Kemiska institutionen
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Karlsson, Doris (författare)
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(creator_code:org_t)
- Royal Society of Chemistry, 1999
- 1999
- Engelska.
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Ingår i: Journal of Environmental Monitoring. - : Royal Society of Chemistry. - 1464-0325 .- 1464-0333. ; 1, s. 349-352
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A diffusive sampler for NO2, Willems badge, was validated in laboratory experiments and field tests. The collecting reagent for NO2 in the sampler is triethanolamine, and the analysis is based on a modified colorimetric method, theSaltzman method. The analysis was performed by a flow injection analysis (FIA) technique. The sampling rate for the sampler was determined to be 40.0 ml min−1. There was no effect of NO2 concentration or relative humidity on sampling rate, and the influence of sampling time was found to be small. The detection limit was 4 mg m−3 for a 24 hsample. The capacity is high enough to allow sampling of 150 mg m−3 for 7 days, which is twice the recommended Swedish short-term (24 h) guideline value as a 98-percentile over 6 months. In field tests, the sampler performedwell, even at wind speeds higher than 2 m s−1, and at low temperatures. The overall uncertainty of the method was 24%. The sensitivity and capacity of the method also make it suitable for personal sampling for 2–8 h in working environments.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Arbetsmedicin och miljömedicin (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Occupational Health and Environmental Health (hsv//eng)
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- diffusive sampler
- NO2
- validation
- analytisk kemi
- Analytical Chemistry
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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