sources of indoor air pollution in new york city residences of asthmatic children

Individuals spend 90% of their time indoors approaching sources of particulate and gas air pollutants.
Separation of indoor particulate matter concentration by sulfur tracer method (PM)PM2.
5 Quality, Element and heat-resolved carbon fraction in New York City homes for asthma children.
According to the importance of indoor sources, species were sorted using enrichment factors associated with sulfur concentration.
A mixed-effect model was used to determine the architectural features and resident activity that led to the observed concentration.
Significant indoor sources of OC1, Cl, K and most remaining OC scores were detected.
We think 46% of indoor pm2. 5
5 Indoor quality related to indoor OC generation.
These sources include cooking (
O, Si, Cl, K, OC4 and OP), cleaning (
Most OC scores)
Candles/incense (
Black carbon BC)and smoking (
K, OC1, OC3 and EC1).
Outdoor sources account for 28% of indoor pm2. 5.
5 Quality, mainly light reaction products, metal and combustion products (
EC, EC2, Br, Mn, Pb, Ni, Ti, V and S).
Other indoor sources account for 26%, including
Suspension of crust elements (
Aluminum, zinc, iron, silicon and calcium).
Indoor sources account for 72% of pm2. 5.
5 Quality, may lead to differences in pm2. 5 composition between indoor and outdoor. 5 exposures.