| Title: | Controlled air exchange rate method to evaluate reduction of volatile organic compounds by indoor air cleaners |
| Author(s): | Rajapakse MY; Pistochini TE; Borras E; McCartney MM; Davis CE; |
| Address: | "Mechanical and Aerospace Engineering, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA; UC Davis Lung Center, University of California Davis, Davis, CA, USA. Mechanical and Aerospace Engineering, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA; Western Cooling Efficiency Center, University of California, One Shields Avenue, Davis, CA, 95616, USA. Mechanical and Aerospace Engineering, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA; UC Davis Lung Center, University of California Davis, Davis, CA, USA; VA Northern California Health Care System, Mather, CA, USA. Mechanical and Aerospace Engineering, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA; UC Davis Lung Center, University of California Davis, Davis, CA, USA; VA Northern California Health Care System, Mather, CA, USA. Electronic address: cedavis@ucdavis.edu" |
| DOI: | 10.1016/j.chemosphere.2022.137528 |
| ISSN/ISBN: | 1879-1298 (Electronic) 0045-6535 (Print) 0045-6535 (Linking) |
| Abstract: | "Air cleaning technologies are needed to reduce indoor concentrations and exposure to volatile organic compounds (VOCs). Currently, air cleaning technologies lack an accepted test standard to evaluate their VOC removal performance. A protocol to evaluate the VOC removal performance of air cleaning devices was developed and piloted with two devices. This method injects a VOC mixture and carbon dioxide into a test chamber, supplies outdoor air at a standard building ventilation rate, periodically measures the VOC concentrations in the chamber using solid phase microextraction-gas chromatography-mass spectrometry over a 3-h decay period, and compares the decay rate of VOCs to carbon dioxide to measure the VOC removal air cleaning performance. The method was demonstrated with both a hydroxyl radical generator and an activated carbon air cleaner. It was shown that the activated carbon air cleaner device tested had a clean air delivery rate an order of magnitude greater than the hydroxyl radical generator device (72.10 vs 6.32 m(3)/h)" |
| Keywords: | "*Volatile Organic Compounds/analysis *Air Pollution, Indoor/prevention & control/analysis *Air Pollutants/analysis Charcoal/analysis Carbon Dioxide/analysis Hydroxyl Radical/analysis Environmental Monitoring Air cleaning Indoor air quality Method of test;" |
| Notes: | "MedlineRajapakse, Maneeshin Y Pistochini, Theresa E Borras, Eva McCartney, Mitchell M Davis, Cristina E eng I01 BX004965/BX/BLRD VA/ U18 TR003795/TR/NCATS NIH HHS/ UG3 OD023365/OD/NIH HHS/ U01 TR004083/TR/NCATS NIH HHS/ UL1 TR001860/TR/NCATS NIH HHS/ P30 ES023513/ES/NIEHS NIH HHS/ England 2022/12/18 Chemosphere. 2023 Feb; 313:137528. doi: 10.1016/j.chemosphere.2022.137528. Epub 2022 Dec 14" |
