期刊
ATMOSPHERIC POLLUTION RESEARCH
卷 12, 期 4, 页码 112-121出版社
TURKISH NATL COMMITTEE AIR POLLUTION RES & CONTROL-TUNCAP
DOI: 10.1016/j.apr.2021.02.018
关键词
Exposure assessment; Particulate matter (PM); Ultrafine particles (UFP); Deposition dose; MPPD
资金
- National Natural Science Foundation of China [52072045]
- Natural Science Basic Research Plan in Shaanxi Province of China [2020JM225]
- Postgraduate Research and Practice Innovation Program of Jiangsu Province, China [KYCX20_0129]
Assessment of pedestrian exposure and lung deposition in Xi'an, China revealed variations in particulate matter deposition among different age groups and genders, with higher total deposition doses in males for most particle-size fractions. The study also found that ultrafine particles (UFP) had higher deposition in the pulmonary region, emphasizing the need to include UFP in current air-quality indices.
Assessment of pedestrian exposure and lung deposition is critical to better understanding the health risks resulting from exposure to ambient particles, and to develop site-specific risk control countermeasures. In this study, real-time mobile-monitoring campaigns of three different PM size fractions (PM10, PM2.5 and UFP) were performed during morning and evening peak hours in two seasons (summer and winter), along road sections with differing characteristics (commercial and residential) in Xi'an, China. The Multiple-Path Particle Dosimetry model (MPPD) was utilized to quantify the total and regional depositions for both adults and teens of different genders. Observed PM10, PM2.5 and UFP concentrations showed pronounced regional, seasonal, and diurnal variabilities. The total deposition dose was higher in males than in females for all particle-size fractions in both age groups, except for UFPs in the teen group, the total deposition dose was higher in females. As for regional depositions, these were observed to be highest in the head region, compared with the tracheobronchial and pulmonary regions, regardless of a participant's age or gender. PM10 and PM2.5 showed the highest depositions in the head region for all age groups (PM10: 90%; PM2.5: 67%), while UFP was highly deposited in the pulmonary region (66%). The dominant percentage of UFP deposition in the pulmonary regions strengthens the need to incorporate UFP into the current air-quality index.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据