PMID- 18409636 OWN - NLM STAT- MEDLINE DCOM- 20080710 LR - 20190715 IS - 0013-936X (Print) IS - 0013-936X (Linking) VI - 42 IP - 6 DP - 2008 Mar 15 TI - Effects of child care center ventilation strategies on volatile organic compounds of indoor and outdoor origins. PG - 2054-9 AB - Preschool children can be at risk from harmful volatile organic compounds (VOCs) exposures in child care centers (CCCs). However, the effectiveness of ventilation for mitigating indoor VOCs exposures from myriad sources in CCCs is unclear. We investigated relationships between indoor exposures and risks of VOCs from indoor and outdoor sources under differentventilation strategies in 104 tropical CCCs. Factor analyses identified five dominant source groups of which four were associated with indoor sources, and one was associated with both indoor and outdoor sources. Indoor VOCs exposures and risks associated with indoor sources were lower in naturally (NV) and hybrid ventilated (HB) CCCs compared to air-conditioned CCCs (ACMV and AC). This is attributed to enhanced dilution via higher ventilation in NV and HB CCCs compared to ACMV and AC CCCs. Conversely, there were no discernible differences in VOCs exposures and risk associated with both indoorand outdoor sources across differentventilation strategies. The observations made in this study have implications of ventilation strategies used in other settings. To mitigate VOCs exposures and risk, it is important to identify their major indoor and outdoor sources first. FAU - Zuraimi, Mohamed S AU - Zuraimi MS AD - Department of Building, School of Design and Environment, National University of Singapore, 4 Architecture Drive, SDE2, Singapore. bdgzms@nus.edu.sg FAU - Tham, Kwok W AU - Tham KW LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Environ Sci Technol JT - Environmental science & technology JID - 0213155 RN - 0 (Air Pollutants) RN - 0 (Organic Chemicals) SB - IM MH - Air Pollutants/*analysis/toxicity MH - Air Pollution, Indoor/adverse effects/*analysis MH - Child MH - *Child Day Care Centers MH - Environmental Monitoring MH - Epidemiological Monitoring MH - Humans MH - Neoplasms/epidemiology MH - Organic Chemicals/*analysis/toxicity MH - Risk Assessment MH - Singapore/epidemiology MH - Ventilation/*methods MH - Volatilization EDAT- 2008/04/16 09:00 MHDA- 2008/07/11 09:00 CRDT- 2008/04/16 09:00 PHST- 2008/04/16 09:00 [pubmed] PHST- 2008/07/11 09:00 [medline] PHST- 2008/04/16 09:00 [entrez] AID - 10.1021/es0714033 [doi] PST - ppublish SO - Environ Sci Technol. 2008 Mar 15;42(6):2054-9. doi: 10.1021/es0714033.