Child Care and Early Education Research Connections

Skip to main content

Infiltration of fine particles in urban daycares

Share
Description:
Singapore is a tropical country with a high density of day-care facilities whose indoor environments may be adversely affected by outdoor fine particle (PM2.5) air pollution. To reduce this problem requires effective, evidence-based exposure-reduction strategies. Little information is available on the penetration of outdoor PM2.5 into day-care environments. Our study attempted to address the following objectives: to measure indoor infiltration factor (Finf) of PM2.5 from outdoor P M2.5 and to determine the building parameters that modify the indoor PM2.5. We collected indoor/outdoor 1-min PM2.5 from 50 day-care classrooms. We noted mean Finf +/- SD of 0.65 +/- 0.22 in day-care rooms which are naturally ventilated and lower Finf +/- SD values of 0.47 +/- 0.18 for those that are air-conditioned: values which are lower than those reported in Singapore residences. The air exchange rates were higher in naturally ventilated rooms (1.47 vs 0.86 h?1). However, fine particle deposition rates were lower for naturally ventilated rooms (0.67 ± 0.43 h?1) compared with air-conditioned ones (1.03 ± 0.55 h?1) presumably due to composite rates linked to the filters within the split unit air-conditioners, higher recirculation rates, and interior surfaces in the latter. Our findings indicate that children remaining indoor in daycares where air-conditioning is used can reduce their PM2.5 exposures during outdoor pollution episodes. (author abstract)
Resource Type:
Reports & Papers
Country:
Singapore

- You May Also Like

These resources share similarities with the current selection. They are found by comparing the topic, author, and resource type of the currently selected resource to the rest of the library’s publications.

Associations between community built environments with early care and education classroom physical activity practices and barriers

Reports & Papersview

Ohio COVID-19 child care study findings

Reports & Papersview

Improving breastfeeding environments and feeding practices in family child care homes with the Go NAP SACC program

Reports & Papersview