Abstract View
Exposure to Long-range-transported Particulate Matter and Evaluation of Health Effects using MPPD model
HYEON-JU OH, Yoonki Min, Rutgers, The State University of New Jersey
Abstract Number: 462
Working Group: Aerosol Exposure
Abstract
Exposure to particulate matters (PM) is known to cause cardiovascular disease and increase mortality and morbidity. Asian dust clouds are carried eastwards by prevailing westerly winds and these dust clouds were eventually transported for more than one full circuit around the globe in about 2 weeks in Korea. Here, we have characterized concentrations of PM and synoptic air flow trajectories were classified into four clusters by HYSPLIT model for Asian dusts in Jeju island for spring season. Also, we evaluated contribution of specific microenvironments to the exposure for different age groups and calculated inhaled PM doses and deposited mass/mass flux so as to evaluate health effects using Multiple-Path Particle Dosimetry (MPPD) model. The average outdoor PM10 concentrations ranged within 29.3 – 65.4 µg/m3, while the concentrations of PM10 for the Asian dust were 127.0 – 342.0 µg/m3. The concentrations of PM10 in indoors were within 26.32 - 43.5 µg/m3. Air masses from cluster 1 and 2 were 24 % and 29 % (in 2017), cluster 2 and 3 were 24 % and 32 % (in 2018) and cluster 1 and 3 were 28 % and 26 % (in 2019), more frequent, respectively, for Asian dusts. The calculated inhaled PM10 doses from specific microenvironments (Home, working or school and transportation) were from 5.28 µg to 101.48 µg depending on age group and different microenvironments while the calculated PM10 inhaled doses for Asian dusts ranged within 67.92 µg -769.27 µg. In the aerosol deposition based on MPPD model, the corresponding values for daily particle deposited mass for two age groups ranged from 8.64 ×10-5 (age 8) to 8.64 ×10-4 (age 21). Overall, the highest contributions were found to come from indoor working time (age 21) (male) and outdoor activity for Asian dust (age 21). This work shows human exposure to PM for Asian dust associated with health effects for a sustainability.