{"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\/es\/resources\/lead\/chromium-in-mce-membranes\/","title":{"rendered":"Cromo en membranas 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\">Cromo en membranas 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) llev\u00f3 a cabo recientemente una investigaci\u00f3n a nivel de toda su red sobre los elevados niveles de cromo que se encuentran com\u00fanmente en las membranas de \u00e9ster de celulosa mixta (MCE) utilizadas para la recolecci\u00f3n de part\u00edculas met\u00e1licas en el aire. Si bien la presencia de trazas de cromo en las membranas MCE se conoce desde hace muchos a\u00f1os, EMSL desea que sus clientes comprendan el impacto potencial en sus resultados anal\u00edticos.<\/p><p>Es importante distinguir entre la contaminaci\u00f3n por procedimientos (por ejemplo, una muestra de control) y la contaminaci\u00f3n inherente al material de la membrana antes de su uso en campo (muestra de control). Si bien EMSL no se responsabiliza de ninguna de las dos fuentes, recomendamos a nuestros clientes que env\u00eden muestras de control junto con sus muestras para que puedan rastrear y documentar los posibles niveles de cromo y otros metales.<\/p><p>El an\u00e1lisis se realiz\u00f3 mediante espectrometr\u00eda de emisi\u00f3n at\u00f3mica con plasma acoplado inductivamente (ICP), utilizando espectrometr\u00eda de emisi\u00f3n \u00f3ptica (OES) y espectrometr\u00eda de masas (MS). Todas las membranas MCE evaluadas ten\u00edan un di\u00e1metro de 37 mm y un tama\u00f1o de poro de 0,8 \u00b5m (micr\u00f3metros). Si bien los niveles de cromo variaron entre las membranas de diferentes proveedores, e incluso entre membranas individuales de un mismo lote, nuestra investigaci\u00f3n revel\u00f3 que los niveles de cromo oscilaban entre 0,2 \u00b5g (microgramos) y 0,6 \u00b5g o m\u00e1s por membrana.<\/p><p>EMSL espera que esta informaci\u00f3n le sea \u00fatil para alcanzar los objetivos de su proyecto. Visite nuestro sitio web o llame al 1.800.220.3675 para obtener ayuda adicional.<\/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\/es\/wp-json\/wp\/v2\/pages\/5421","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/laboratorytesting.com\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/laboratorytesting.com\/es\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/laboratorytesting.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/laboratorytesting.com\/es\/wp-json\/wp\/v2\/comments?post=5421"}],"version-history":[{"count":4,"href":"https:\/\/laboratorytesting.com\/es\/wp-json\/wp\/v2\/pages\/5421\/revisions"}],"predecessor-version":[{"id":5427,"href":"https:\/\/laboratorytesting.com\/es\/wp-json\/wp\/v2\/pages\/5421\/revisions\/5427"}],"up":[{"embeddable":true,"href":"https:\/\/laboratorytesting.com\/es\/wp-json\/wp\/v2\/pages\/5401"}],"wp:attachment":[{"href":"https:\/\/laboratorytesting.com\/es\/wp-json\/wp\/v2\/media?parent=5421"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}