{"id":13462,"date":"2021-10-18T17:14:51","date_gmt":"2021-10-18T21:14:51","guid":{"rendered":"https:\/\/cep-experts.ca\/?p=13462"},"modified":"2021-10-18T17:17:16","modified_gmt":"2021-10-18T21:17:16","slug":"la-poussiere-de-silice-cristalline-meconnue-mais-redoutable","status":"publish","type":"post","link":"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/","title":{"rendered":"La poussi\u00e8re de silice cristalline : m\u00e9connue, mais redoutable"},"content":{"rendered":"\t\t<div class=\"et_pb_section et_pb_with_background et_section_regular breadcrumbs_section\">\r\n\t\t\t<div class=\" et_pb_row breadcrumbs_row\">\r\n\t\t\t\t<div class=\"et_pb_column et_pb_column_4_4 breadcrumbs_column\">\r\n\t\t\t\t\t<div class=\"et_pb_code et_pb_module breadcrumbs_module\">\r\n\t\t\t\t\t\t<span><span><a href=\"https:\/\/cep-experts.ca\/fr\/\">Accueil<\/a><\/span><\/span>\t\t\t\t\t<\/div> <!-- .et_pb_code -->\r\n\t\t\t\t<\/div> <!-- .et_pb_column -->\r\n\t\t\t<\/div> <!-- .et_pb_row -->\r\n\t\t<\/div>\r\n\t[et_pb_section bb_built=\u00a0\u00bb1&Prime; inner_width=\u00a0\u00bbauto\u00a0\u00bb inner_max_width=\u00a0\u00bb1080px\u00a0\u00bb][et_pb_row][et_pb_column type=\u00a0\u00bb4_4&Prime; custom_padding__hover=\u00a0\u00bb|||\u00a0\u00bb custom_padding=\u00a0\u00bb|||\u00a0\u00bb][et_pb_text _builder_version=\u00a0\u00bb4.11.1&Prime; text_text_shadow_horizontal_length=\u00a0\u00bbtext_text_shadow_style,%91object Object%93&Prime; text_text_shadow_horizontal_length_tablet=\u00a0\u00bb0px\u00a0\u00bb text_text_shadow_vertical_length=\u00a0\u00bbtext_text_shadow_style,%91object Object%93&Prime; text_text_shadow_vertical_length_tablet=\u00a0\u00bb0px\u00a0\u00bb text_text_shadow_blur_strength=\u00a0\u00bbtext_text_shadow_style,%91object Object%93&Prime; text_text_shadow_blur_strength_tablet=\u00a0\u00bb1px\u00a0\u00bb link_text_shadow_horizontal_length=\u00a0\u00bblink_text_shadow_style,%91object Object%93&Prime; link_text_shadow_horizontal_length_tablet=\u00a0\u00bb0px\u00a0\u00bb link_text_shadow_vertical_length=\u00a0\u00bblink_text_shadow_style,%91object Object%93&Prime; link_text_shadow_vertical_length_tablet=\u00a0\u00bb0px\u00a0\u00bb link_text_shadow_blur_strength=\u00a0\u00bblink_text_shadow_style,%91object Object%93&Prime; link_text_shadow_blur_strength_tablet=\u00a0\u00bb1px\u00a0\u00bb ul_text_shadow_horizontal_length=\u00a0\u00bbul_text_shadow_style,%91object Object%93&Prime; ul_text_shadow_horizontal_length_tablet=\u00a0\u00bb0px\u00a0\u00bb ul_text_shadow_vertical_length=\u00a0\u00bbul_text_shadow_style,%91object Object%93&Prime; ul_text_shadow_vertical_length_tablet=\u00a0\u00bb0px\u00a0\u00bb ul_text_shadow_blur_strength=\u00a0\u00bbul_text_shadow_style,%91object Object%93&Prime; ul_text_shadow_blur_strength_tablet=\u00a0\u00bb1px\u00a0\u00bb ol_text_shadow_horizontal_length=\u00a0\u00bbol_text_shadow_style,%91object Object%93&Prime; ol_text_shadow_horizontal_length_tablet=\u00a0\u00bb0px\u00a0\u00bb ol_text_shadow_vertical_length=\u00a0\u00bbol_text_shadow_style,%91object Object%93&Prime; ol_text_shadow_vertical_length_tablet=\u00a0\u00bb0px\u00a0\u00bb ol_text_shadow_blur_strength=\u00a0\u00bbol_text_shadow_style,%91object Object%93&Prime; ol_text_shadow_blur_strength_tablet=\u00a0\u00bb1px\u00a0\u00bb quote_text_shadow_horizontal_length=\u00a0\u00bbquote_text_shadow_style,%91object Object%93&Prime; quote_text_shadow_horizontal_length_tablet=\u00a0\u00bb0px\u00a0\u00bb quote_text_shadow_vertical_length=\u00a0\u00bbquote_text_shadow_style,%91object Object%93&Prime; quote_text_shadow_vertical_length_tablet=\u00a0\u00bb0px\u00a0\u00bb quote_text_shadow_blur_strength=\u00a0\u00bbquote_text_shadow_style,%91object Object%93&Prime; quote_text_shadow_blur_strength_tablet=\u00a0\u00bb1px\u00a0\u00bb header_text_shadow_horizontal_length=\u00a0\u00bbheader_text_shadow_style,%91object Object%93&Prime; header_text_shadow_horizontal_length_tablet=\u00a0\u00bb0px\u00a0\u00bb header_text_shadow_vertical_length=\u00a0\u00bbheader_text_shadow_style,%91object Object%93&Prime; header_text_shadow_vertical_length_tablet=\u00a0\u00bb0px\u00a0\u00bb header_text_shadow_blur_strength=\u00a0\u00bbheader_text_shadow_style,%91object Object%93&Prime; header_text_shadow_blur_strength_tablet=\u00a0\u00bb1px\u00a0\u00bb header_2_text_shadow_horizontal_length=\u00a0\u00bbheader_2_text_shadow_style,%91object Object%93&Prime; header_2_text_shadow_horizontal_length_tablet=\u00a0\u00bb0px\u00a0\u00bb header_2_text_shadow_vertical_length=\u00a0\u00bbheader_2_text_shadow_style,%91object Object%93&Prime; header_2_text_shadow_vertical_length_tablet=\u00a0\u00bb0px\u00a0\u00bb header_2_text_shadow_blur_strength=\u00a0\u00bbheader_2_text_shadow_style,%91object Object%93&Prime; header_2_text_shadow_blur_strength_tablet=\u00a0\u00bb1px\u00a0\u00bb header_3_text_shadow_horizontal_length=\u00a0\u00bbheader_3_text_shadow_style,%91object Object%93&Prime; header_3_text_shadow_horizontal_length_tablet=\u00a0\u00bb0px\u00a0\u00bb header_3_text_shadow_vertical_length=\u00a0\u00bbheader_3_text_shadow_style,%91object Object%93&Prime; header_3_text_shadow_vertical_length_tablet=\u00a0\u00bb0px\u00a0\u00bb header_3_text_shadow_blur_strength=\u00a0\u00bbheader_3_text_shadow_style,%91object Object%93&Prime; header_3_text_shadow_blur_strength_tablet=\u00a0\u00bb1px\u00a0\u00bb header_4_text_shadow_horizontal_length=\u00a0\u00bbheader_4_text_shadow_style,%91object Object%93&Prime; header_4_text_shadow_horizontal_length_tablet=\u00a0\u00bb0px\u00a0\u00bb header_4_text_shadow_vertical_length=\u00a0\u00bbheader_4_text_shadow_style,%91object Object%93&Prime; header_4_text_shadow_vertical_length_tablet=\u00a0\u00bb0px\u00a0\u00bb header_4_text_shadow_blur_strength=\u00a0\u00bbheader_4_text_shadow_style,%91object Object%93&Prime; header_4_text_shadow_blur_strength_tablet=\u00a0\u00bb1px\u00a0\u00bb header_5_text_shadow_horizontal_length=\u00a0\u00bbheader_5_text_shadow_style,%91object Object%93&Prime; header_5_text_shadow_horizontal_length_tablet=\u00a0\u00bb0px\u00a0\u00bb header_5_text_shadow_vertical_length=\u00a0\u00bbheader_5_text_shadow_style,%91object Object%93&Prime; header_5_text_shadow_vertical_length_tablet=\u00a0\u00bb0px\u00a0\u00bb header_5_text_shadow_blur_strength=\u00a0\u00bbheader_5_text_shadow_style,%91object Object%93&Prime; header_5_text_shadow_blur_strength_tablet=\u00a0\u00bb1px\u00a0\u00bb header_6_text_shadow_horizontal_length=\u00a0\u00bbheader_6_text_shadow_style,%91object Object%93&Prime; header_6_text_shadow_horizontal_length_tablet=\u00a0\u00bb0px\u00a0\u00bb header_6_text_shadow_vertical_length=\u00a0\u00bbheader_6_text_shadow_style,%91object Object%93&Prime; header_6_text_shadow_vertical_length_tablet=\u00a0\u00bb0px\u00a0\u00bb header_6_text_shadow_blur_strength=\u00a0\u00bbheader_6_text_shadow_style,%91object Object%93&Prime; header_6_text_shadow_blur_strength_tablet=\u00a0\u00bb1px\u00a0\u00bb box_shadow_horizontal_tablet=\u00a0\u00bb0px\u00a0\u00bb box_shadow_vertical_tablet=\u00a0\u00bb0px\u00a0\u00bb box_shadow_blur_tablet=\u00a0\u00bb40px\u00a0\u00bb box_shadow_spread_tablet=\u00a0\u00bb0px\u00a0\u00bb vertical_offset_tablet=\u00a0\u00bb0&Prime; horizontal_offset_tablet=\u00a0\u00bb0&Prime; z_index_tablet=\u00a0\u00bb0&Prime;]\r\n\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-13455\" src=\"https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/dans-la-tete-dun-expert.png\" alt=\"\" width=\"5000\" height=\"1225\" srcset=\"https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/dans-la-tete-dun-expert.png 5000w, https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/dans-la-tete-dun-expert-1280x314.png 1280w, https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/dans-la-tete-dun-expert-980x240.png 980w, https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/dans-la-tete-dun-expert-480x118.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) and (max-width: 1280px) 1280px, (min-width: 1281px) 5000px, 100vw\" \/><\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-13480\" src=\"https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/michel-millmore-cep-sur-chantier-scaled.jpg\" alt=\"\" width=\"161\" height=\"214\" \/>On conna\u00eet depuis plusieurs ann\u00e9es les dangers reli\u00e9s \u00e0 la poussi\u00e8re d\u2019amiante, si bien que son usage sous certaines formes est maintenant interdit au Qu\u00e9bec. Mais peu de gens connaissent la poussi\u00e8re de silice cristalline et les risques li\u00e9s \u00e0 son exposition. <a href=\"https:\/\/cep-experts.ca\/fr\/expert\/michel-millmore\/\"><strong>Michel Millmore<\/strong><\/a>, technologue professionnel (T.P.) et \u00e9valuateur environnemental de site agr\u00e9\u00e9 (EESA<sup>\u00ae<\/sup>) chez CEP Forensique nous en parle bri\u00e8vement, sous forme de questions-r\u00e9ponses.<\/p>\r\n<p>\u00a0<\/p>\r\n<p><strong>1. Qu\u2019est-ce que la poussi\u00e8re de silice cristalline et dans quel contexte peut-on y \u00eatre expos\u00e9?<\/strong><\/p>\r\n<p>La silice cristalline est un \u00e9l\u00e9ment de base de plusieurs min\u00e9raux. On en retrouve notamment dans le sable, dans la pierre et dans les sols en g\u00e9n\u00e9ral. Il y en a sous forme de quartz et sous d\u2019autres formes \u00e9galement. Celle de quartz est celle que l\u2019on retrouve le plus abondamment.<\/p>\r\n<p>Par exemple, dans les processus de l\u2019industrie mini\u00e8re, o\u00f9 il y a du concassage de pierres et de roches qui soul\u00e8ve de la poussi\u00e8re, il peut y avoir de la silice cristalline. On comprendra qu\u2019elle va \u00e9galement entrer dans la composition de plusieurs mat\u00e9riaux de construction comme le b\u00e9ton, le mortier, ou encore la brique. On peut m\u00eame en trouver dans les rev\u00eatements int\u00e9rieurs, les compos\u00e9s \u00e0 joints et les panneaux de gypse.<\/p>\r\n<p>Et quand ces mat\u00e9riaux se retrouvent sous forme de poussi\u00e8res, comme en sciant du b\u00e9ton ou en brisant du marbre, par exemple, des particules de silice cristalline vont se d\u00e9gager de ces travaux, \u00eatre a\u00e9roport\u00e9es et devenir respirables. Il s\u2019agit de la principale voie d\u2019exposition \u00e0 la silice cristalline.<\/p>\r\n<p><strong>2. Bien qu\u2019il s\u2019agisse d\u2019un contaminant \u00e9mergent, la Commission des normes, de l\u2019\u00e9quit\u00e9, de la sant\u00e9 et de la s\u00e9curit\u00e9 du travail (CNESST) veille \u00e0 l\u2019application de r\u00e8gles pour r\u00e9duire l\u2019exposition des travailleurs sujets \u00e0 l\u2019\u00eatre. Que dit leur politique de \u00ab tol\u00e9rance z\u00e9ro \u00bb \u00e0 ce sujet?<\/strong><\/p>\r\n<p>La CNESST a identifi\u00e9 certaines cat\u00e9gories d\u2019activit\u00e9s qui comportent un risque accru d\u2019exposition \u00e0 la poussi\u00e8re de silice cristalline. On peut penser \u00e0 des travaux de per\u00e7age, de scarification (incision) du b\u00e9ton, de d\u00e9capage au jet d\u2019abrasif (sandblast), de taillage de pierres, de d\u00e9coupe de comptoir en marbre ou en granit, par exemple.<\/p>\r\n<p>Pour ces activit\u00e9s, la CNESST applique une politique de tol\u00e9rance z\u00e9ro, c\u2019est-\u00e0-dire que m\u00eame dans les cas o\u00f9 l\u2019on peut d\u00e9montrer par des pr\u00e9l\u00e8vements d\u2019air que les concentrations de silice cristalline sont inf\u00e9rieures aux normes r\u00e8glementaires, la CNESST peut exiger que le travailleur porte un appareil respiratoire appropri\u00e9 et qu\u2019il utilise des mesures de contr\u00f4le de la poussi\u00e8re pendant les travaux.<\/p>\r\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-13459\" src=\"https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/cep-poussiere-silice-cristalline.jpg\" alt=\"\" width=\"1320\" height=\"880\" srcset=\"https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/cep-poussiere-silice-cristalline.jpg 1320w, https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/cep-poussiere-silice-cristalline-1280x853.jpg 1280w, https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/cep-poussiere-silice-cristalline-980x653.jpg 980w, https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/cep-poussiere-silice-cristalline-480x320.jpg 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) and (max-width: 1280px) 1280px, (min-width: 1281px) 1320px, 100vw\" \/><\/p>\r\n<p><strong>3. Quels sont les risques pour la sant\u00e9 li\u00e9s \u00e0 l\u2019exposition \u00e0 la poussi\u00e8re de silice cristalline ?<\/strong><\/p>\r\n<p>Une exposition prolong\u00e9e \u00e0 des concentrations \u00e9lev\u00e9es de silice cristalline peut entra\u00eener des maladies pulmonaires, notamment la silicose, soit une fibrose dite irr\u00e9versible des tissus du poumon qui conduira \u00e9ventuellement \u00e0 une perte de la capacit\u00e9 pulmonaire partielle ou compl\u00e8te pouvant m\u00eame devenir fatale en cas de complications.<\/p>\r\n<p>L\u2019apparition de la silicose et sa gravit\u00e9 varie selon les concentrations de silice cristalline auxquelles une personne est expos\u00e9e et selon la dur\u00e9e de cette exposition. Un peu comme l\u2019amiantose pour l\u2019amiante, la silice va entra\u00eener la silicose. De plus, des \u00e9tudes conduites par le Centre international de recherche sur le cancer ont conclu que la silice cristalline sous forme de quartz est un canc\u00e9rig\u00e8ne chez l\u2019humain quand elle est inhal\u00e9e en milieu de travail.<\/p>\r\n<p><strong>4. En plus de pouvoir contaminer l\u2019air ambiant, la silice cristalline peut s\u2019introduire dans les b\u00e2timents par un syst\u00e8me de ventilation et se d\u00e9poser sur des surfaces. Si une d\u00e9contamination compl\u00e8te d\u2019un immeuble devient n\u00e9cessaire, les co\u00fbts peuvent rapidement devenir exorbitants, n\u2019est-ce pas?<\/strong><\/p>\r\n<p>C\u2019est en effet le cas! Bien qu\u2019il n\u2019y ait pas de normes ou de directives en ce qui concerne la pr\u00e9sence de silice cristalline dans la poussi\u00e8re d\u00e9pos\u00e9e, certains experts font valoir qu\u2019elle constitue tout de m\u00eame un risque contre lequel il est n\u00e9cessaire de se pr\u00e9munir.<\/p>\r\n<p>La pr\u00e9sence, m\u00eame tr\u00e8s faible, de traces de silice cristalline, a fortiori dans les syst\u00e8mes de ventilation, suffira parfois pour que ces experts recommandent un nettoyage complet des syst\u00e8mes de ventilation. Et ces nettoyages sont faits selon des sp\u00e9cifications tr\u00e8s rigoureuses.<\/p>\r\n<p>On aura donc compris que lorsqu\u2019il s\u2019agit d\u2019un immeuble de bureaux, ces travaux peuvent entra\u00eener des co\u00fbts de plusieurs centaines de milliers de dollars parce que ces b\u00e2timents sont dot\u00e9s de syst\u00e8mes de ventilation \u00e9normes qui ont bien souvent \u00e9t\u00e9 mal entretenus depuis 40 ou 50 ans.<\/p>\r\n<p><strong>5. Qui devra la payer la facture? Comment d\u00e9terminer qui est responsable de la pr\u00e9sence de poussi\u00e8res de silice cristalline dans un lieu?<\/strong><\/p>\r\n<p>Il n\u2019est pas possible de dater la pr\u00e9sence de silice cristalline sur une surface par une analyse en laboratoire. Donc, il n\u2019est pas possible de distinguer de la silice cristalline sous forme de quartz provenant d\u2019un \u00e9v\u00e9nement \u00ab A \u00bb de celle provenant d\u2019un \u00e9v\u00e9nement \u00ab B \u00bb. La d\u00e9monstration qu\u2019un \u00e9v\u00e9nement sp\u00e9cifique a occasionn\u00e9 le d\u00e9p\u00f4t de poussi\u00e8re qui contient de la silice cristalline est habituellement circonstancielle.<\/p>\r\n<p>Par exemple, il est assez facile d\u2019\u00e9tablir un lien avec une surface poussi\u00e9reuse d\u00e9couverte au lendemain de travaux de construction quand cette surface est g\u00e9n\u00e9ralement exempte de poussi\u00e8re et qu\u2019elle est nettoy\u00e9e sur une base r\u00e9guli\u00e8re.<\/p>\r\n<p>Par contre, il peut \u00eatre beaucoup plus difficile d\u2019\u00e9tablir un lien entre des poussi\u00e8res d\u00e9pos\u00e9es dans un endroit moins accessible, comme l\u2019int\u00e9rieur d\u2019un syst\u00e8me de ventilation, les entre-plafonds d\u2019un immeuble ou les cavit\u00e9s murales, surtout quand il s\u2019agit d\u2019installations datant de plusieurs ann\u00e9es et qu\u2019elles ne font pas l\u2019objet d\u2019un nettoyage r\u00e9gulier. Donc, trouver qui est responsable peut s\u2019av\u00e9rer difficile, voire impossible.<\/p>\r\n\r\n[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section]","protected":false},"excerpt":{"rendered":"<p>On conna\u00eet depuis plusieurs ann\u00e9es les dangers reli\u00e9s \u00e0 la poussi\u00e8re d\u2019amiante, si bien que son usage sous certaines formes est maintenant interdit au Qu\u00e9bec. Mais peu de gens connaissent la poussi\u00e8re de silice cristalline et les risques li\u00e9s \u00e0 son exposition. <\/p>\n","protected":false},"author":4,"featured_media":13459,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-13462","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>La poussi\u00e8re de silice cristalline : m\u00e9connue, mais redoutable - CEP Forensique<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/\" \/>\n<meta property=\"og:locale\" content=\"fr_CA\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La poussi\u00e8re de silice cristalline : m\u00e9connue, mais redoutable - CEP Forensique\" \/>\n<meta property=\"og:description\" content=\"On conna\u00eet depuis plusieurs ann\u00e9es les dangers reli\u00e9s \u00e0 la poussi\u00e8re d\u2019amiante, si bien que son usage sous certaines formes est maintenant interdit au Qu\u00e9bec. Mais peu de gens connaissent la poussi\u00e8re de silice cristalline et les risques li\u00e9s \u00e0 son exposition.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/\" \/>\n<meta property=\"og:site_name\" content=\"CEP Forensique\" \/>\n<meta property=\"article:published_time\" content=\"2021-10-18T21:14:51+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-10-18T21:17:16+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/cep-poussiere-silice-cristalline.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1320\" \/>\n\t<meta property=\"og:image:height\" content=\"880\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"cynthia\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"cynthia\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimation du temps de lecture\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/\"},\"author\":{\"name\":\"cynthia\",\"@id\":\"https:\/\/cep-experts.ca\/fr\/#\/schema\/person\/bee85dd6361a906d9b914c78747f7480\"},\"headline\":\"La poussi\u00e8re de silice cristalline : m\u00e9connue, mais redoutable\",\"datePublished\":\"2021-10-18T21:14:51+00:00\",\"dateModified\":\"2021-10-18T21:17:16+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/\"},\"wordCount\":1749,\"image\":{\"@id\":\"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/cep-poussiere-silice-cristalline.jpg\",\"inLanguage\":\"fr-CA\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/\",\"url\":\"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/\",\"name\":\"La poussi\u00e8re de silice cristalline : m\u00e9connue, mais redoutable - CEP Forensique\",\"isPartOf\":{\"@id\":\"https:\/\/cep-experts.ca\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/cep-poussiere-silice-cristalline.jpg\",\"datePublished\":\"2021-10-18T21:14:51+00:00\",\"dateModified\":\"2021-10-18T21:17:16+00:00\",\"author\":{\"@id\":\"https:\/\/cep-experts.ca\/fr\/#\/schema\/person\/bee85dd6361a906d9b914c78747f7480\"},\"breadcrumb\":{\"@id\":\"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/#breadcrumb\"},\"inLanguage\":\"fr-CA\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-CA\",\"@id\":\"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/#primaryimage\",\"url\":\"https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/cep-poussiere-silice-cristalline.jpg\",\"contentUrl\":\"https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/cep-poussiere-silice-cristalline.jpg\",\"width\":1320,\"height\":880},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/cep-experts.ca\/fr\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"La poussi\u00e8re de silice cristalline : m\u00e9connue, mais redoutable\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/cep-experts.ca\/fr\/#website\",\"url\":\"https:\/\/cep-experts.ca\/fr\/\",\"name\":\"CEP Forensique\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/cep-experts.ca\/fr\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-CA\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/cep-experts.ca\/fr\/#\/schema\/person\/bee85dd6361a906d9b914c78747f7480\",\"name\":\"cynthia\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"La poussi\u00e8re de silice cristalline : m\u00e9connue, mais redoutable - CEP Forensique","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/","og_locale":"fr_CA","og_type":"article","og_title":"La poussi\u00e8re de silice cristalline : m\u00e9connue, mais redoutable - CEP Forensique","og_description":"On conna\u00eet depuis plusieurs ann\u00e9es les dangers reli\u00e9s \u00e0 la poussi\u00e8re d\u2019amiante, si bien que son usage sous certaines formes est maintenant interdit au Qu\u00e9bec. Mais peu de gens connaissent la poussi\u00e8re de silice cristalline et les risques li\u00e9s \u00e0 son exposition.","og_url":"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/","og_site_name":"CEP Forensique","article_published_time":"2021-10-18T21:14:51+00:00","article_modified_time":"2021-10-18T21:17:16+00:00","og_image":[{"width":1320,"height":880,"url":"https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/cep-poussiere-silice-cristalline.jpg","type":"image\/jpeg"}],"author":"cynthia","twitter_card":"summary_large_image","twitter_misc":{"\u00c9crit par":"cynthia","Estimation du temps de lecture":"9 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/#article","isPartOf":{"@id":"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/"},"author":{"name":"cynthia","@id":"https:\/\/cep-experts.ca\/fr\/#\/schema\/person\/bee85dd6361a906d9b914c78747f7480"},"headline":"La poussi\u00e8re de silice cristalline : m\u00e9connue, mais redoutable","datePublished":"2021-10-18T21:14:51+00:00","dateModified":"2021-10-18T21:17:16+00:00","mainEntityOfPage":{"@id":"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/"},"wordCount":1749,"image":{"@id":"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/#primaryimage"},"thumbnailUrl":"https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/cep-poussiere-silice-cristalline.jpg","inLanguage":"fr-CA"},{"@type":"WebPage","@id":"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/","url":"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/","name":"La poussi\u00e8re de silice cristalline : m\u00e9connue, mais redoutable - CEP Forensique","isPartOf":{"@id":"https:\/\/cep-experts.ca\/fr\/#website"},"primaryImageOfPage":{"@id":"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/#primaryimage"},"image":{"@id":"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/#primaryimage"},"thumbnailUrl":"https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/cep-poussiere-silice-cristalline.jpg","datePublished":"2021-10-18T21:14:51+00:00","dateModified":"2021-10-18T21:17:16+00:00","author":{"@id":"https:\/\/cep-experts.ca\/fr\/#\/schema\/person\/bee85dd6361a906d9b914c78747f7480"},"breadcrumb":{"@id":"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/#breadcrumb"},"inLanguage":"fr-CA","potentialAction":[{"@type":"ReadAction","target":["https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/"]}]},{"@type":"ImageObject","inLanguage":"fr-CA","@id":"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/#primaryimage","url":"https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/cep-poussiere-silice-cristalline.jpg","contentUrl":"https:\/\/cep-experts.ca\/wp-content\/uploads\/2021\/10\/cep-poussiere-silice-cristalline.jpg","width":1320,"height":880},{"@type":"BreadcrumbList","@id":"https:\/\/cep-experts.ca\/fr\/la-poussiere-de-silice-cristalline-meconnue-mais-redoutable\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/cep-experts.ca\/fr\/"},{"@type":"ListItem","position":2,"name":"La poussi\u00e8re de silice cristalline : m\u00e9connue, mais redoutable"}]},{"@type":"WebSite","@id":"https:\/\/cep-experts.ca\/fr\/#website","url":"https:\/\/cep-experts.ca\/fr\/","name":"CEP Forensique","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/cep-experts.ca\/fr\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-CA"},{"@type":"Person","@id":"https:\/\/cep-experts.ca\/fr\/#\/schema\/person\/bee85dd6361a906d9b914c78747f7480","name":"cynthia"}]}},"_links":{"self":[{"href":"https:\/\/cep-experts.ca\/fr\/wp-json\/wp\/v2\/posts\/13462","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cep-experts.ca\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cep-experts.ca\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cep-experts.ca\/fr\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/cep-experts.ca\/fr\/wp-json\/wp\/v2\/comments?post=13462"}],"version-history":[{"count":0,"href":"https:\/\/cep-experts.ca\/fr\/wp-json\/wp\/v2\/posts\/13462\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cep-experts.ca\/fr\/wp-json\/wp\/v2\/media\/13459"}],"wp:attachment":[{"href":"https:\/\/cep-experts.ca\/fr\/wp-json\/wp\/v2\/media?parent=13462"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}