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  • Indoor air pollution by 2-ethyl-1-hexanol in non-domestic buildings in Nagoya, Japan.

Indoor air pollution by 2-ethyl-1-hexanol in non-domestic buildings in Nagoya, Japan.

Journal of environmental monitoring : JEM (2006-11-01)
Kiyoshi Sakai, Michihiro Kamijima, Eiji Shibata, Hironobu Ohno, Tamie Nakajima
ABSTRACT

2-Ethyl-1-hexanol is a possibly causative chemical in sick building symptoms, although 2-ethyl-1-hexanol has received little attention as a hazardous substance in studies on indoor air pollution. Airborne 2-ethyl-1-hexanol concentrations were measured from 2002 to 2004 in 99 rooms of 42 non-domestic buildings in Nagoya, Japan. The diffusive sampling method is effective for the measurement of a low level of 2-ethyl-1-hexanol in indoor air. The geometric mean (geometric standard deviation) of 2-ethyl-1-hexanol concentrations was 16.5 (5.4) microg m(-3) in indoor air and 1.9 (2.2) microg m(-3) in outdoor air. The maximum concentration of 2-ethyl-1-hexanol in indoor air and outdoor air was 2709 microg m(-3) and 12.4 microg m(-3), respectively. Fewer rooms in a small number of new buildings showed high concentrations of 2-ethyl-1-hexanol, while low concentrations were observed in many rooms of these buildings as well as the other new buildings. The room-to-room concentrations of 2-ethyl-1-hexanol in each building exhibited a wide variation. The geometric mean of the 2-ethyl-1-hexanol concentrations was significantly higher for indoor air than for outdoor air (p < 0.01). The correlation of the 2-ethyl-1-hexanol concentrations between indoor and outdoor air was not significant. Mechanical ventilation was effective in the temporary reduction of indoor 2-ethyl-1-hexanol level. These results suggest that the predominant source of 2-ethyl-1-hexanol was indoor areas.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
2-Ethyl-1-hexanol, ≥99%, FG
Sigma-Aldrich
Titanium(IV) 2-ethylhexyloxide, 95%
Sigma-Aldrich
2-Ethyl-1-hexanol, ≥99.6%
Sigma-Aldrich
2-Ethyl-1-hexanol, puriss., ≥99.0% (GC)
Supelco
2-Ethyl-1-hexanol, analytical standard