Investigation of volatile organic compounds in office buildings in Bangkok, Thailand: Concentrations, sources, and occupant symptoms

Ongwandee, Maneerat; Moonrinta, Rathakheth; Panyametheekul, Sirima; Tangbanluekal, Chalongkwan; Morrison, Glenn

doi:10.1016/j.buildenv.2011.01.026

Cited by 65 publications

(34 citation statements)

References 27 publications

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“…This inverse model is the same as used in previous analyses (Chan et al., ; Hodgson et al., ; Ongwandee et al., ; Tham et al., ; Zuraimi et al., ), except that it includes a term for per‐occupant emissions. All variables were taken at their measured BASE values without uncertainty at this point.…”

Section: Methodsmentioning

confidence: 99%

Do time‐averaged, whole‐building, effective volatile organic compound ( VOC ) emissions depend on the air exchange rate? A statistical analysis of trends for 46 VOC s in U . S . offices

Rackes

Waring

2015

Indoor Air

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We used existing data to develop distributions of time-averaged air exchange rates (AER), whole-building 'effective' emission rates of volatile organic compounds (VOC), and other variables for use in Monte Carlo analyses of U.S. offices. With these, we explored whether long-term VOC emission rates were related to the AER over the sector, as has been observed in the short term for some VOCs in single buildings. We fit and compared two statistical models to the data. In the independent emissions model (IEM), emissions were unaffected by other variables, while in the dependent emissions model (DEM), emissions responded to the AER via coupling through a conceptual boundary layer between the air and a lumped emission source. For 20 of 46 VOCs, the DEM was preferable to the IEM and emission rates, though variable, were higher in buildings with higher AERs. Most oxygenated VOCs and some alkanes were well fit by the DEM, while nearly all aromatics and halocarbons were independent. Trends by vapor pressure suggested multiple mechanisms could be involved. The factors of temperature, relative humidity, and building age were almost never associated with effective emission rates. Our findings suggest that effective emissions in real commercial buildings will be difficult to predict from deterministic experiments or models.

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Section: Methodsmentioning

confidence: 99%

Do time‐averaged, whole‐building, effective volatile organic compound ( VOC ) emissions depend on the air exchange rate? A statistical analysis of trends for 46 VOC s in U . S . offices

Rackes

Waring

2015

Indoor Air

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“…The HVAC systems was usually used to provide fresh and to clean air and remove the pollutants caused by the activity of occupants, the equipment of furniture and the materials of decoration [4]. Through normal indoor office activity and occupation, a great deal of contaminants and air pollutants, such as dander, dust, and chemicals could be generated [5]. These contaminants could pull into the HVAC system and re-circulated 5 to 7 times per day, on average [6].…”

Section: Introductionmentioning

confidence: 99%

Investigation of dust loading and culturable microorganisms of HVAC systems in 24 office buildings in Beijing

Liu

Zhu

et al. 2015

Energy and Buildings

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“…One of the major FA emissions results from the use of urea-FA resin, employed to bond wood products, such as medium density fibreboard (MDF), particleboard, oriented strand board and plywood; approximately 90 % of the wooden board produced world-wide makes use of this resin (Boran et al, 2011). This emission from wood-based panels is a particular problem due to contamination of air in interiors, with high concentrations of FA detected in offices with inadequate ventilation (Ongwandee et al, 2011). Indoor concentrations of FA are 2-10 times higher than outdoor concentrations (Blondel & Plaisance, 2011), ranking it among the most abundant pollutants in the indoor environment (Kim et al, 2013).…”

Section: Introductionmentioning

confidence: 98%

Determination of formaldehyde by flow injection analysis with spectrophotometric detection exploiting brilliant green–sulphite reaction

2015

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A method for the determination of formaldehyde by flow injection analysis with spectrophotometric detection is proposed, based on retarding the reaction between brilliant green and sulphite by the addition of formaldehyde; this was investigated for formaldehyde quantification in extracts from wood-based panels. For the first time, a heating step was explored, providing a sample throughput of 50 analyses per hour, with a limit of detection of 0.02 mg L −1 and linearity of 0.20-3.0 mg L −1 , which was adequate for the expected range of formaldehyde concentration in the extracts. The mean recovery observed for actual samples was in the range of 92-106 %, with a maximum relative standard deviation of 6.0 %. The paired t-test revealed no significant difference between this method and the official Nash method, demonstrating an appropriate accuracy and precision; the method is proposed as a simple, fast and inexpensive alternative for the routine determination of formaldehyde in an aqueous medium.

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Investigation of volatile organic compounds in office buildings in Bangkok, Thailand: Concentrations, sources, and occupant symptoms

Cited by 65 publications

References 27 publications

Do time‐averaged, whole‐building, effective volatile organic compound ( VOC ) emissions depend on the air exchange rate? A statistical analysis of trends for 46 VOC s in U . S . offices

Do time‐averaged, whole‐building, effective volatile organic compound ( VOC ) emissions depend on the air exchange rate? A statistical analysis of trends for 46 VOC s in U . S . offices

Investigation of dust loading and culturable microorganisms of HVAC systems in 24 office buildings in Beijing

Determination of formaldehyde by flow injection analysis with spectrophotometric detection exploiting brilliant green–sulphite reaction

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