{"id":5421,"date":"2026-04-15T03:42:33","date_gmt":"2026-04-15T07:42:33","guid":{"rendered":"https:\/\/laboratorytesting.com\/?page_id=5421"},"modified":"2026-04-15T03:46:17","modified_gmt":"2026-04-15T07:46:17","slug":"chromium-in-mce-membranes","status":"publish","type":"page","link":"https:\/\/laboratorytesting.com\/fr\/resources\/lead\/chromium-in-mce-membranes\/","title":{"rendered":"Chrome dans les membranes MCE"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"5421\" class=\"elementor elementor-5421\" data-elementor-settings=\"{&quot;ha_cmc_init_switcher&quot;:&quot;no&quot;}\" data-elementor-post-type=\"page\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f0777b3 bg-four-corner-image elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f0777b3\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4760a46\" data-id=\"4760a46\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4f2fe9f elementor-widget elementor-widget-heading\" data-id=\"4f2fe9f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Chrome dans les membranes MCE<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cec391b elementor-widget elementor-widget-image\" data-id=\"cec391b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1440\" height=\"501\" src=\"https:\/\/laboratorytesting.com\/wp-content\/uploads\/2026\/04\/chromium-in-mce-membranes.jpg\" class=\"attachment-full size-full wp-image-5424\" alt=\"\" srcset=\"https:\/\/laboratorytesting.com\/wp-content\/uploads\/2026\/04\/chromium-in-mce-membranes.jpg 1440w, https:\/\/laboratorytesting.com\/wp-content\/uploads\/2026\/04\/chromium-in-mce-membranes-300x104.jpg 300w, https:\/\/laboratorytesting.com\/wp-content\/uploads\/2026\/04\/chromium-in-mce-membranes-1024x356.jpg 1024w, https:\/\/laboratorytesting.com\/wp-content\/uploads\/2026\/04\/chromium-in-mce-membranes-768x267.jpg 768w, https:\/\/laboratorytesting.com\/wp-content\/uploads\/2026\/04\/chromium-in-mce-membranes-600x209.jpg 600w\" sizes=\"(max-width: 1440px) 100vw, 1440px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3c6595c elementor-widget elementor-widget-text-editor\" data-id=\"3c6595c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>EMSL Analytical Inc. (EMSL) a r\u00e9cemment men\u00e9 une enqu\u00eate \u00e0 l&#039;\u00e9chelle de son r\u00e9seau concernant les niveaux \u00e9lev\u00e9s de chrome fr\u00e9quemment observ\u00e9s dans les membranes en ester de cellulose mixte (MCE) utilis\u00e9es pour la collecte des particules m\u00e9talliques dans l&#039;air. Bien que la pr\u00e9sence de traces de chrome dans les membranes MCE soit connue depuis de nombreuses ann\u00e9es, EMSL souhaite informer ses clients de l&#039;impact potentiel sur leurs r\u00e9sultats d&#039;analyse.<\/p><p>Il est important de distinguer l&#039;origine du chrome entre la contamination li\u00e9e \u00e0 la proc\u00e9dure (par exemple, un blanc de terrain) et celle intrins\u00e8que au mat\u00e9riau de la membrane avant son utilisation sur le terrain (blanc de support). Bien qu&#039;EMSL d\u00e9cline toute responsabilit\u00e9 quant \u00e0 l&#039;origine du chrome, nous encourageons nos clients \u00e0 joindre des blancs \u00e0 leurs \u00e9chantillons afin de pouvoir suivre et documenter les niveaux potentiels de chrome et d&#039;autres m\u00e9taux.<\/p><p>L&#039;analyse a \u00e9t\u00e9 r\u00e9alis\u00e9e par spectrom\u00e9trie d&#039;\u00e9mission atomique \u00e0 plasma inductif (ICP-AES) coupl\u00e9e \u00e0 la spectrom\u00e9trie de masse (MS). Toutes les membranes MCE \u00e9valu\u00e9es avaient un diam\u00e8tre de 37 mm et une porosit\u00e9 de 0,8 \u00b5m. Bien que les teneurs en chrome varient d&#039;une membrane \u00e0 l&#039;autre selon les fournisseurs, voire d&#039;une membrane \u00e0 l&#039;autre au sein d&#039;un m\u00eame lot, notre \u00e9tude a r\u00e9v\u00e9l\u00e9 que des teneurs en chrome allant de 0,2 \u00b5g \u00e0 0,6 \u00b5g, voire plus, par membrane \u00e9taient courantes.<\/p><p>EMSL esp\u00e8re que ces informations vous seront utiles pour la r\u00e9alisation de votre projet. Pour obtenir de l&#039;aide suppl\u00e9mentaire, veuillez consulter notre site web ou composer le 1\u00a0800\u00a0220-3675.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Chromium in MCE Membranes EMSL Analytical Inc. (EMSL) recently conducted a network-wide investigation into elevated chromium levels commonly found in mixed cellulose ester (MCE) membranes utilized for collection of metal particulates in air. While the presence of trace chromium levels [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":5401,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":"","footnotes":""},"class_list":["post-5421","page","type-page","status-publish","hentry","slug-chromium-in-mce-membranes","odd_post_id"],"_links":{"self":[{"href":"https:\/\/laboratorytesting.com\/fr\/wp-json\/wp\/v2\/pages\/5421","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/laboratorytesting.com\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/laboratorytesting.com\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/laboratorytesting.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/laboratorytesting.com\/fr\/wp-json\/wp\/v2\/comments?post=5421"}],"version-history":[{"count":4,"href":"https:\/\/laboratorytesting.com\/fr\/wp-json\/wp\/v2\/pages\/5421\/revisions"}],"predecessor-version":[{"id":5427,"href":"https:\/\/laboratorytesting.com\/fr\/wp-json\/wp\/v2\/pages\/5421\/revisions\/5427"}],"up":[{"embeddable":true,"href":"https:\/\/laboratorytesting.com\/fr\/wp-json\/wp\/v2\/pages\/5401"}],"wp:attachment":[{"href":"https:\/\/laboratorytesting.com\/fr\/wp-json\/wp\/v2\/media?parent=5421"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}