Laboratoire de Pollution et Traitement des Eaux, Université Frères Mentouri, Route de Aïn El Bey, 25017, Constantine, Algeria.
Centre de Recherche Scientifique et Technique en Analyses Physico-Chimiques, BP 384, Siège ex-Pasna Zone Industrielle, CP 42004, Bou-Ismail, Tipaza, Algeria.
Environ Sci Pollut Res Int. 2018 May;25(13):12303-12328. doi: 10.1007/s11356-018-1715-x. Epub 2018 Mar 19.
In order to assess the significance of PM in ambient air, it is necessary to evaluate their physical and chemical characteristics as well as identify their major emission sources. On a global scale, particulate matter in the atmosphere arises mainly from the combustion process of motorized vehicles, but natural sources are still considered as the major contributors. In Africa, PM emissions differ from those in developed countries; human activities such as biomass burning in households, poor household waste management, and the high number of diesel-powered vehicles are the predominant anthropogenic sources. Natural contributions are also observed. Saharan dust and savanna fires are the most common atmospheric natural sources of particulate matter. The present literature review gives an overview of the status of air quality in African cities and highlights the various sources of particulate matter emissions and local human activities specific to each African region. This could likely serve as a reference to evaluate the current air quality in this region and will be a useful tool in the future to develop pollution mitigation strategies at the source. Recommendations are proposed in the conclusion in order to reduce emissions from their sources, taking into account the low-income African countries.
为了评估环境空气中 PM 的重要性,有必要评估其物理和化学特性,并确定其主要排放源。在全球范围内,大气中的颗粒物主要来自机动车的燃烧过程,但自然源仍被认为是主要贡献者。在非洲,PM 排放与发达国家不同;人类活动,如家庭燃烧生物质、家庭垃圾管理不善以及大量使用柴油车辆,是主要的人为排放源。也观察到自然贡献。撒哈拉尘埃和热带草原火灾是大气中颗粒物的最常见自然来源。本文献综述概述了非洲城市的空气质量状况,并强调了每个非洲地区特有的颗粒物排放源和当地人类活动。这可能有助于评估该地区当前的空气质量,并将成为未来在源头制定污染缓解策略的有用工具。结论中提出了一些建议,以考虑到非洲低收入国家的情况,从源头上减少排放。