Particulate matter deposition in the human respiratory system: A health risk assessment at a technical university

Q3 Environmental Science
Salman Khan, V. Sahu, Nachimuthu Manoj Kumar, B. Gurjar
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引用次数: 0

Abstract

Introduction: This study quantified Particulate Matter (PM) deposition and its clearance in the Human Respiratory Tract (HRT) at different microenvironments of a university. The university is located adjacent to the National Highway (NH 334) and main bus stop of the city, thus highly affected by PM pollution. Materials and methods: The deposition calculations were performed using a widely accepted MPPD 3.04 model. Three seasons (summer, winter and monsoon), seven microenvironments (including three Lecture Hall Complexes (LHCs), a library, two laboratories and outdoor), and different activity patterns associated with each microenvironment were considered. Results: The deposited mass of coarse fraction (PM2.5-10) in different HRT regions follows the order: pulmonary (0.5%)
人体呼吸系统中的颗粒物沉积:一所技术大学的健康风险评估
导言:本研究量化了某大学不同微环境中的颗粒物(PM)沉积及其在人体呼吸道(HRT)中的清除情况。该大学毗邻国道(NH 334)和城市主要公交车站,因此受可吸入颗粒物污染的影响很大。材料和方法:沉积计算采用广为接受的 MPPD 3.04 模型。考虑了三个季节(夏季、冬季和季风季节)、七个微环境(包括三个报告厅、一个图书馆、两个实验室和室外)以及与每个微环境相关的不同活动模式。研究结果粗颗粒物(PM2.5-10)在不同HRT区域的沉积量依次为:肺(0.5%)<气管支气管(2%)<头部(或胸腔外区域)(97.5%)。就肺叶区域而言,由于下叶体积较大,其沉积率(53%)高于中叶(8%)和上叶(39%)。此外,还发现坐姿活动水平对肺叶沉积最为关键。HRT的总沉积量在室外最大,在图书馆最小。PM2.5-10在冬季和季风沉积的差异为100%,PM1-2.5为75%,PM1为126%。PM1 的清除率是这样的:即使在 6 个月后,气管支气管中仍有 1.5% 的颗粒物,肺部地区仍有 64% 的颗粒物。结论研究结果表明,体育锻炼水平、吸入方式和颗粒大小对区域沉积有显著影响。例如,剧烈运动会导致更多颗粒沉积在头部区域,而久坐活动则会导致更多颗粒沉积在肺部和气管支气管。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Air Pollution and Health
Journal of Air Pollution and Health Environmental Science-Global and Planetary Change
CiteScore
1.90
自引率
0.00%
发文量
36
审稿时长
8 weeks
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