Use of reactive tracers to determine ambient OH radical concentrations: application within the indoor environment.
The hydroxyl radical (OH) plays a key role in determining indoor air quality. However, its highly reactive nature and low concentration indoors impede direct analysis. This paper describes the techniques used to indirectly quantify indoor OH, including the development of a new method based on the instantaneous release of chemical tracers into the air. This method was used to detect ambient OH in two indoor seminar rooms following tracer detection by gas chromatography-mass spectrometry (GCMS). The results from these tests add to the small number of experiments that have measured indoor OH which are discussed with regard to future directions within air quality research.
White
Iain R
IR
School of Chemistry, Bristol University, Bristol BS8 1TS, UK.
Martin
Damien
D
Muñoz
M Paz
MP
Petersson
Fredrik K
FK
Henshaw
Stephen J
SJ
Nickless
Graham
G
Lloyd-Jones
Guy C
GC
Clemitshaw
Kevin C
KC
Shallcross
Dudley E
DE
D016902:Air Pollution, Indoor / Q000032:analysis*; D002070:Butadienes / Q000737:chemistry; D002248:Carbon Monoxide / Q000032:analysis; D004784:Environmental Monitoring / Q000379:methods*; D045782:Hemiterpenes / Q000737:chemistry; D006813:Humidity; D017665:Hydroxyl Radical / Q000032:analysis*; D010126:Ozone / Q000032:analysis; D010420:Pentanes / Q000737:chemistry; D013696:Temperature; D013997:Time Factors; D055549:Volatile Organic Compounds / Q000032:analysis
D002070:Butadienes; D045782:Hemiterpenes; D010420:Pentanes; D055549:Volatile Organic Compounds; C005059:isoprene; D017665:Hydroxyl Radical; D010126:Ozone; D002248:Carbon Monoxide