Pollution de l'air


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PDF Pollution de l’air

La pollution de l'air entraîne plusieurs phénomènes naturels graves tels que: L'effet de serre: réchauffement de la planète dû à une augmentation du dioxyde de carbone dans l'air Ce phénomène naturel permet de maintenir la Terre à une température moyenne favorable à la vie (environ 15°C)

PDF An Introduction to Air Pollution – Definitions

Abstract: Definitions and classifications used in the study of air pollution are introduced Also introduced are a brief history of air pollution its regulation and trend s of its ambient concentration s and emissions Keywords: Anthropogenic biogenic geogenic emissions; primary and secondary pollutants;

PDF Qualité de l’air LA POLLUTION DE L’AIR

Cet indice quotidien permet de noter de 1 à 10 la qualité globale de l’air à travers la concentration de 4 polluants (dioxyde de soufre dioxyde d’azote ozone et particules) De 1 à 4 la qualité est très bonne à bonne De 5 à 7 elle est moyenne à médiocre De 8 à 10 elle est mauvaise à très mauvaise

  • What are the effects of air pollution?

    The combined efects from ambient (outdoor) air pollution and indoor (household, in particular) air pollution cause approximately 7 million premature deaths every year, largely as a result of increased mortality from stroke, IHD, COPD, lung cancer and acute respiratory infections (1).

  • What is a good indicator of ambient air pollution?

    2.5 is the indicator of ambient air pollution that best predicts health impacts, and can be measured locally. Assessment of additional indicators is also useful.1 In-situ measurements are generally provided by national or subnational institutions. In addition, a global database, the WHO Global Ambient Air Quality Database (8) compiles annual PM

  • What is the global database of household air pollution measurements?

    Global database of household air pollution measurements (50): This database contains household air pollution measurements (household and/ or personal measurements) collected in hundreds of studies. The contribution of domestic fuel burning to ambient air pollution can be estimated through source apportionment studies.

  • What happens if air pollution levels are above who guidelines?

    When people are exposed to air pollution levels above the WHO guideline levels, they are at increased risk of health impacts, in particular cardiovascular and respiratory diseases and lung cancer. The current air quality (for PM) can be informed through the following.

2.2 Ambient air pollution

This section contains the guidance to improve air quality in a location or country, information on the context and additional tools. While in-depth local assessments are generally needed to identify the most appropriate and eficient solutions, some lines of action are fundamental to achieve cleaner air, such as clean energy generation and transport

2.3 Indoor air pollution: household air pollution, second-hand tobacco smoke, dampness and mould

This section covers guidance to improve the quality of air within and around household environments from various pollutants and polluting sources. The most important source of pollution worldwide, in particular in low- and middle-income countries,3 comes from ineficient fuel combustion for cooking, heating and lighting, generating PM and other noxi

2.3.3 Dampness and mould

This section summarizes measures to control mould growth indoors. The most important means for avoiding adverse health efects is the prevention (or minimization) of persistent dampness and microbial growth on interior surfaces and in building structures. cdn.who.int

Overview

Indoor moisture can lead to microbial pollution caused by hundreds of species of bacteria and fungi, in particular filamentous fungi (mould), growing indoors. The most important efects are increased prevalence of respiratory symptoms, allergies and asthma as well as perturbation of the immunological system. cdn.who.int

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On appelle pollution de l'air un ensemble de gaz et de particules en suspension présents dans l'air (intérieur ou extérieur) dont les niveaux de concentration varient en fonction des émissions et des conditions météorologiques, et qui sont nuisibles pour la santé et l'environnement.

Quel est la cause de la pollution de l'air ?

Les phénomènes naturels (éruptions volcaniques, brumes de sable, incendies de forêts, etc.) et les activités humaines (industries, transports, agriculture, chauffage résidentiel, etc.) sont à l'origine d'émissions de gaz et de particules dans l'atmosphère.

C'est quoi la pollution de l'air ?

La pollution de l'air, c'est la modification de la composition de l'air par des polluants nuisibles à la santé et à l'environnement.
. Ces polluants proviennent de la nature (feux de forêt par exemple) ou des activités humaines (trafic routier, chauffage, industrie, agriculture…).

Quelles sont les 4 conséquences de la pollution de l'air ?

Effets des polluants sur la santé > A long terme, développement de cancers (poumon, vessie), maladies cardiovasculaires et respiratoires, atteinte du développement neurologique de l'enfant, diabète, …










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