利用流动空气质量站数据确定里约热内卢市污染物浓度的关键区域

João Rogério Borges Amorim Rodrigues, Guilherme Dantas, Bruno Siciliano, Cleyton Martins da Silva, Graciela Arbilla
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引用次数: 0

摘要

最近的研究表明,对流层臭氧、细颗粒物和二氧化氮是对人类健康产生重大影响的城市空气污染物。监测空气质量在里约热内卢等几个城市是一项挑战,在这些城市,固定地点空气质量监测站的数量及其空间分布不足以评估大气污染物的程度。然而,尽管缺乏资源,移动站获得的数据是确定哪些地区正在经历严重空气质量状况的宝贵手段,并为空气质量管理计划提供关键信息。本研究的主要目的是对市环境与气候部(SMAC)移动站在2010-2018年期间获得的数据进行批判性分析。直径≤2.5µm的颗粒物(PM2.5)、O3、NO2、SO2和CO的浓度测定结果表明,PM2.5和O3是主要污染物质,且城市北部的这些化合物的空气质量指数较高。此外,西南地区的臭氧水平相对较高,可能是由于挥发性有机化合物(VOC)限制臭氧形成的NO2浓度较低。这些因素应该被市政府在未来的城市空气质量管理控制策略的讨论中考虑。这项研究还显示了流动监测站在初步调查污染物浓度方面的价值,主要是在对空气质量管理财政投资有限的国家。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Using mobile air quality station data to identify critical areas in the city of Rio de Janeiro regarding pollutant concentrations
Recent studies have shown that tropospheric ozone, fine particulate matter and nitrogen dioxide are the urban air pollutants of major concern regarding human health effects. Monitoring air quality is a challenge in several cities, such as Rio de Janeiro, where the number of fixed-site air quality monitoring stations and their spatial distribution are insufficient to assess the extent of atmospheric pollutants. However, despite this lack of resources, the data obtained by mobile stations are a valuable means of determining which areas are experiencing critical air quality conditions, and provide key information for an air quality management program. The main purpose of this study was to conduct a critical analysis of data obtained by the Municipal Department of Environment and Climate (SMAC) mobile station in the period 2010–2018. Concentrations determined for particulate matter with a diameter ≤2.5 µm (PM2.5), O3, NO2, SO2 and CO showed that PM2.5 and O3 are the pollutants of major concern, and that the north of the city has higher air quality indices for these compounds. In addition, the south-west district had relatively high ozone levels, probably owing to low concentrations of NO2 in a volatile organic compound (VOC)-limited ozone formation regime. These factors should be considered by the municipal government in future discussions of control strategies for managing the city’s air quality. This study also shows the value of mobile stations in making a preliminary survey of pollutant concentrations, mainly in countries with limited financial investment in air quality management.
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