{"id":13883,"date":"2019-11-20T17:14:58","date_gmt":"2019-11-21T01:14:58","guid":{"rendered":"https:\/\/massive.rupertport.com\/qualite-de-lair\/"},"modified":"2025-04-03T13:14:08","modified_gmt":"2025-04-03T21:14:08","slug":"qualite-de-lair","status":"publish","type":"page","link":"https:\/\/www.rupertport.com\/fr\/qualite-de-lair\/","title":{"rendered":"Qualit\u00e9 de l&rsquo;air"},"content":{"rendered":"\n<p>Une bonne qualit\u00e9 de l&rsquo;air se r\u00e9f\u00e8re \u00e0 un air propre, clair et non pollu\u00e9. La mauvaise qualit\u00e9 de l&rsquo;air est le r\u00e9sultat d&rsquo;un certain nombre de facteurs, notamment les \u00e9missions provenant de diverses sources, tant naturelles qu&rsquo;humaines. La mauvaise qualit\u00e9 de l&rsquo;air est pr\u00e9occupante lorsque les polluants atteignent des concentrations suffisamment \u00e9lev\u00e9es pour mettre en danger la sant\u00e9 humaine et\/ou l&rsquo;environnement.  <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Quels sont les polluants atmosph\u00e9riques mesur\u00e9s au port ?<\/h3>\n\n\n\n<p>Les particules en suspension dans l&rsquo;air sont de minuscules particules solides ou liquides en suspension dans l&rsquo;air. Les particules sont omnipr\u00e9sentes autour de nous et ont des origines tr\u00e8s diverses. Les particules dont le diam\u00e8tre est inf\u00e9rieur ou \u00e9gal \u00e0 10 microns (0,01 millim\u00e8tre) sont appel\u00e9es PM10. Toutefois, les PM 2,5, particules de 2,5 microns ou moins, sont les plus pr\u00e9occupantes.  <\/p>\n\n\n\n<p>L&rsquo;administration portuaire de Prince Rupert mesure les niveaux ambiants de particules (PM<sub>2,5<\/sub> et PM<sub>10<\/sub>), d&rsquo;oxydes d&rsquo;azote (NO<sub>X<\/sub>, NO<sub>2<\/sub>, NO), de dioxyde de soufre (SO<sub>2<\/sub>) et d&rsquo;ozone troposph\u00e9rique (O<sub>3<\/sub>).<\/p>\n\n\n\n<p>Les PM<sub>2,5<\/sub> et les PM<sub>10<\/sub> d\u00e9signent les particules en suspension dans l&rsquo;air dont le diam\u00e8tre est inf\u00e9rieur ou \u00e9gal \u00e0 2,5 microns et inf\u00e9rieur ou \u00e9gal \u00e0 10 microns, respectivement. Les particules sont naturellement pr\u00e9sentes dans l&rsquo;air (par exemple, l&rsquo;alt\u00e9ration des mat\u00e9riaux terrestres, la fum\u00e9e), mais les concentrations peuvent \u00eatre augment\u00e9es par l&rsquo;activit\u00e9 humaine (par exemple, la poussi\u00e8re des routes, les \u00e9missions de diesel).<\/p>\n\n\n\n<p>Le NO et le NO<sub>2<\/sub> sont commun\u00e9ment appel\u00e9s NO<sub>X<\/sub>. Les NO<sub>X<\/sub> sont produits lorsque l&rsquo;azote et l&rsquo;oxyg\u00e8ne r\u00e9agissent dans l&rsquo;air \u00e0 des temp\u00e9ratures \u00e9lev\u00e9es, comme c&rsquo;est le cas lors de la combustion dans les moteurs de v\u00e9hicules ou de la foudre. Les NO<sub>X<\/sub> peuvent ensuite r\u00e9agir dans l&rsquo;air pour former du smog et des pluies acides.<\/p>\n\n\n\n<p>Le SO<sub>2<\/sub> est introduit dans l&rsquo;atmosph\u00e8re par l&rsquo;activit\u00e9 humaine, via la combustion de carburants contenant du soufre, ou par des sources naturelles telles que les volcans. Le SO<sub>2<\/sub> peut contribuer \u00e0 la pollution par les particules et aux pluies acides.<\/p>\n\n\n\n<p>O<sub>3<\/sub> est naturellement pr\u00e9sent dans la troposph\u00e8re, mais \u00e0 des niveaux \u00e9lev\u00e9s, il a des effets n\u00e9fastes. Il se forme principalement par r\u00e9action avec d&rsquo;autres gaz, dont les NO<sub>X<\/sub>, et provoque le smog.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Comment la qualit\u00e9 de l&rsquo;air est-elle surveill\u00e9e ?<\/h3>\n\n\n\n<p>La mesure et la surveillance des param\u00e8tres de la qualit\u00e9 de l&rsquo;air est un outil essentiel dans la gestion de la qualit\u00e9 de l&rsquo;air. L&rsquo;APPR surveille actuellement la qualit\u00e9 de l&rsquo;air en temps r\u00e9el dans deux stations : Westview (PM<sub>2.5<\/sub>, PM<sub>10<\/sub>, NO<sub>X<\/sub>) et Fairview (PM<sub>2.5<\/sub>, PM<sub>10<\/sub>, NO<sub>X<\/sub>, SO<sub>2<\/sub>, O<sub>3<\/sub>).<\/p>\n\n\n\n<p>Des relev\u00e9s sont disponibles de la station de surveillance \u00e0 <a href=\"http:\/\/www.env.gov.bc.ca\/epd\/bcairquality\/data\/station.html?id=E312331\">Fairview<\/a> et en <a href=\"https:\/\/www.env.gov.bc.ca\/epd\/bcairquality\/data\/station.html?id=E327924\">Port Edward<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Qu&rsquo;est-ce qui d\u00e9termine une mauvaise qualit\u00e9 de l&rsquo;air ?<\/h3>\n\n\n\n<p>La strat\u00e9gie du minist\u00e8re de l&rsquo;environnement et du changement climatique de la Colombie-Britannique a fix\u00e9 des objectifs de qualit\u00e9 de l&rsquo;air. L&rsquo;autorit\u00e9 portuaire de Prince Rupert se mesure \u00e0 ces objectifs. <a href=\"https:\/\/www2.gov.bc.ca\/gov\/content\/environment\/air-land-water\/air\">Apprendre plus ici<\/a>.<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Une bonne qualit\u00e9 de l&rsquo;air se r\u00e9f\u00e8re \u00e0 un air propre, clair et non pollu\u00e9. La mauvaise qualit\u00e9 de l&rsquo;air est le r\u00e9sultat d&rsquo;un certain nombre de facteurs, notamment les \u00e9missions provenant de diverses sources, tant naturelles qu&rsquo;humaines. La mauvaise qualit\u00e9 de l&rsquo;air est pr\u00e9occupante lorsque les polluants atteignent des concentrations suffisamment \u00e9lev\u00e9es pour mettre [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":10197,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-13883","page","type-page","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Maintien d&#039;excellentes normes de qualit\u00e9 de l&#039;air | Autorit\u00e9 portuaire de Prince Rupert<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez nos mesures pour maintenir une excellente qualit\u00e9 de l&#039;air \u00e0 l&#039;L&#039;Administration portuaire de Prince Rupert. 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