{"id":14140,"date":"2025-02-20T16:00:14","date_gmt":"2025-02-20T15:00:14","guid":{"rendered":"https:\/\/tera-environnement.com\/measurement-of-quaternary-ammoniums-in-workplace-air\/"},"modified":"2025-04-14T12:20:10","modified_gmt":"2025-04-14T10:20:10","slug":"measurement-of-quaternary-ammoniums-in-workplace-air","status":"publish","type":"post","link":"https:\/\/tera-environnement.com\/en\/measurement-of-quaternary-ammoniums-in-workplace-air\/","title":{"rendered":"Measurement of quaternary ammoniums in workplace air"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"14140\" class=\"elementor elementor-14140 elementor-13854\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-8d5069d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"8d5069d\" data-element_type=\"section\" data-e-type=\"section\">\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-abaae19\" data-id=\"abaae19\" 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-162cbc6 elementor-widget__width-auto elementor-widget elementor-widget-image\" data-id=\"162cbc6\" 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 decoding=\"async\" width=\"68\" height=\"69\" src=\"https:\/\/tera-environnement.com\/wp-content\/uploads\/2023\/09\/fleche-grise.png\" class=\"attachment-large size-large wp-image-389\" alt=\"\" \/>\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-ca79a8e elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"ca79a8e\" 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<h1 class=\"elementor-heading-title elementor-size-default\">Measurement of quaternary ammoniums in workplace air<\/h1>\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<div class=\"elementor-element elementor-element-1da6e11 e-flex e-con-boxed e-con e-parent\" data-id=\"1da6e11\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b5578ca elementor-widget elementor-widget-spacer\" data-id=\"b5578ca\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7513992 e-flex e-con-boxed e-con e-parent\" data-id=\"7513992\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3c1a958 elementor-widget elementor-widget-text-editor\" data-id=\"3c1a958\" 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><strong>What are quaternary ammoniums?<\/strong><\/p>\n\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-f425730 elementor-widget elementor-widget-text-editor\" data-id=\"f425730\" 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\tQuaternary ammoniums are a family of chemical compounds derived from ammonium (NH<sub>4<\/sub><sup>+<\/sup>). Their general structure comprises a cationic moiety consisting of a nitrogen atom linked to four alkyl chains and a halogen atom (usually chlorine).\n\nThey are mainly used for their disinfectant and biocidal properties.\n\nQuaternary ammoniums are classified by generation according to their chemical evolution and antimicrobial efficacy. In all, there are five generations of quaternary ammoniums. Two of the five generations are detailed below:\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\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-42b1fe8 e-flex e-con-boxed e-con e-parent\" data-id=\"42b1fe8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-f141f8e e-con-full e-flex e-con e-child\" data-id=\"f141f8e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c3f8025 elementor-widget elementor-widget-text-editor\" data-id=\"c3f8025\" 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<ul><li>1<sup>st<\/sup> generation: quaternary ammonium Benzalkonium chlorides (BAC) &#8211; <em>CAS: 8001-54-5,<\/em> mainly used in household products, antiseptic solutions and veterinary products. This generation comprises compounds with &#8220;alkyl&#8221; chains from C<sub>8<\/sub> to C<sub>18<\/sub>.<\/li><\/ul><ul><li>2<sup>nd <\/sup>generation: quaternary ammoniums Alkyl dimethyl benzyl ammonium chlorides (ADBAC) &#8211; <em style=\"font-family: inherit;\">CAS: 68424-85-1<\/em><span style=\"font-family: inherit;\">, used as hospital disinfectants or industrial cleaners, with a broader spectrum of action than the first generation.<\/span><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d10fb2c e-con-full e-flex e-con e-child\" data-id=\"d10fb2c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c5bb9a4 elementor-widget elementor-widget-image\" data-id=\"c5bb9a4\" 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=\"307\" height=\"217\" src=\"https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/image-formule-ammonium-quaternaire.png\" class=\"attachment-large size-large wp-image-13866\" alt=\"\" srcset=\"https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/image-formule-ammonium-quaternaire.png 307w, https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/image-formule-ammonium-quaternaire-300x212.png 300w\" sizes=\"(max-width: 307px) 100vw, 307px\" \/>\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>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e0b3406 e-flex e-con-boxed e-con e-parent\" data-id=\"e0b3406\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a0a0fb4 elementor-widget elementor-widget-text-editor\" data-id=\"a0a0fb4\" 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><strong>Properties and uses of quaternary ammoniums<\/strong><\/p>\n\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-7728ff7 elementor-widget elementor-widget-text-editor\" data-id=\"7728ff7\" 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>Quaternary ammoniums are chemical compounds with disinfectant, surfactant and antistatic properties. Widely used in cleaning, cosmetic and industrial products, they eliminate bacteria, viruses and fungi by destroying their cell membranes. Although effective, they also present health risks (irritation, allergies).  <\/p>\n<p>In the respiratory tract, acute exposure to vapors or aerosols can cause :<\/p>\n<ul>\n<li>Irritation of the nose, throat and lungs<\/li>\n<li>Acute lung disease<\/li>\n<\/ul>\n<p>Chronic exposure can lead to allergic manifestations. A few cases of occupational asthma and rhinitis caused by quaternary ammoniums have been reported: <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/11007347\/\" target=\"_blank\" rel=\"noopener\">PubMed<\/a> and <a href=\"https:\/\/www.inrs.fr\/media.html?refINRS=TR%2026\" target=\"_blank\" rel=\"noopener\">INRS<\/a> sources. <\/p>\n<p>The main sectors concerned by the use of this family of compounds are presented below.<\/p>\n\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\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7abfdf8 e-flex e-con-boxed e-con e-parent\" data-id=\"7abfdf8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-384a5c4 e-con-full e-flex e-con e-child\" data-id=\"384a5c4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-596531d elementor-widget elementor-widget-image\" data-id=\"596531d\" 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 decoding=\"async\" width=\"2048\" height=\"1368\" src=\"https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/Desinfection-hopital-actu-ammonium-quaternaire-2048x1368.jpg\" class=\"attachment-2048x2048 size-2048x2048 wp-image-13884\" alt=\"\" srcset=\"https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/Desinfection-hopital-actu-ammonium-quaternaire-scaled.jpg 2048w, https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/Desinfection-hopital-actu-ammonium-quaternaire-300x200.jpg 300w, https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/Desinfection-hopital-actu-ammonium-quaternaire-1024x684.jpg 1024w, https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/Desinfection-hopital-actu-ammonium-quaternaire-768x513.jpg 768w, https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/Desinfection-hopital-actu-ammonium-quaternaire-1536x1026.jpg 1536w, https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/Desinfection-hopital-actu-ammonium-quaternaire-600x401.jpg 600w\" sizes=\"(max-width: 2048px) 100vw, 2048px\" \/>\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-e4b3b41 elementor-widget elementor-widget-text-editor\" data-id=\"e4b3b41\" 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><strong>Workplace air \/ Occupational exposure<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a224548 elementor-widget elementor-widget-spacer\" data-id=\"a224548\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-641e38e e-con-full e-flex e-con e-child\" data-id=\"641e38e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-09ceb15 elementor-widget elementor-widget-text-editor\" data-id=\"09ceb15\" 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><strong>Hospitals, clinics and retirement homes<\/strong><\/p>\n<ul>\n<li>Risk of exposure to cleaning staff, nurses and hospital workers through intensive use of quaternary ammonium-based disinfectants for cleaning surfaces and medical equipment.<\/li>\n<\/ul>\n<p><strong>Cleaning and maintenance companies<\/strong><\/p>\n<ul>\n<li>Risk to staff using disinfectant solutions on a daily basis in offices, schools, hotels, airports, etc.<\/li>\n<\/ul>\n<p><strong>Pharmaceutical laboratories and industries<\/strong><\/p>\n<ul>\n<li>Risk of exposure for laboratory technicians and production workers when using quaternary ammoniums for sterilization of equipment and surfaces.<\/li>\n<\/ul>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-21d0c90 e-flex e-con-boxed e-con e-parent\" data-id=\"21d0c90\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e6a3b90 elementor-widget elementor-widget-text-editor\" data-id=\"e6a3b90\" 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><span data-teams=\"true\">Other sectors may also be concerned, such as food processing and catering (disinfection of production lines and work surfaces), cosmetics or chemical industries manufacturing household products.<\/span><\/p>\n\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\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-14fe08c e-flex e-con-boxed e-con e-parent\" data-id=\"14fe08c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-d8eb5c8 e-con-full e-flex e-con e-child\" data-id=\"d8eb5c8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4dffd3c elementor-widget elementor-widget-text-editor\" data-id=\"4dffd3c\" 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><strong>How do you measure quaternary ammoniums in the workplace?<\/strong><\/p>\n\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-fd485a6 elementor-widget elementor-widget-text-editor\" data-id=\"fd485a6\" 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>Several methods have been published for measuring quaternary ammoniums in the workplace, one of which involves pumping air through a tube filled with XAD-2 (active sampling): sources <a href=\"https:\/\/www.inrs.fr\/publications\/bdd\/fichetox\/fiche.html?refINRS=FICHETOX_253\" target=\"_blank\" rel=\"noopener\">INRS<\/a> and <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17180409\/\" target=\"_blank\" rel=\"noopener\">PubMed.<\/a><\/p>\n<p><span style=\"background-color: var(--bs-body-bg);\">Our laboratory can help you with these samples by providing you with XAD-2 sampling tubes and sampling pumps.<\/span><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e602156 elementor-widget elementor-widget-spacer\" data-id=\"e602156\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-25aa720 e-con-full e-flex e-con e-child\" data-id=\"25aa720\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2c59842 elementor-widget elementor-widget-image\" data-id=\"2c59842\" 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 loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"667\" src=\"https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/pompe-tube-actu-ammonium-quaternaire-1024x854.png\" class=\"attachment-large size-large wp-image-13941\" alt=\"\" srcset=\"https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/pompe-tube-actu-ammonium-quaternaire-1024x854.png 1024w, https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/pompe-tube-actu-ammonium-quaternaire-300x250.png 300w, https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/pompe-tube-actu-ammonium-quaternaire-768x640.png 768w, https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/pompe-tube-actu-ammonium-quaternaire-1536x1280.png 1536w, https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/pompe-tube-actu-ammonium-quaternaire-600x500.png 600w, https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/pompe-tube-actu-ammonium-quaternaire.png 1928w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\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>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4f712e5 e-flex e-con-boxed e-con e-parent\" data-id=\"4f712e5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2a1d27e elementor-widget elementor-widget-text-editor\" data-id=\"2a1d27e\" 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><strong>Why trust us with your quaternary ammoniums measurements<\/strong><strong>\u00a0<\/strong><strong>? <\/strong><\/p>\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-83292ce elementor-widget elementor-widget-text-editor\" data-id=\"83292ce\" 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>TERA Environnement offers quaternary ammonium measurement using a method adapted from two papers published on PubMed: <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/12064528\/\" target=\"_blank\" rel=\"noopener\">HPLC-UV<\/a> analysis of tubes filled with <a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17180409\/\" target=\"_blank\" rel=\"noopener\">XAD-2<\/a>.<\/p><p>We are able to measure around ten compounds among first-generation (BAC, <em>CAS: 8001-54-5<\/em> from C<sub>8<\/sub> to C<sub>18<\/sub>) and second generation\u00a0<span style=\"background-color: var(--bs-body-bg);\">quaternary ammoniums<\/span><span style=\"background-color: var(--bs-body-bg);\">\u00a0(ADBAC &#8211; <\/span><em style=\"background-color: var(--bs-body-bg);\">CAS: 68424-85-1<\/em><span style=\"background-color: var(--bs-body-bg);\">).<\/span><\/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\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-164f498 e-flex e-con-boxed e-con e-parent\" data-id=\"164f498\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a7e625f elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"a7e625f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ca93809 e-flex e-con-boxed e-con e-parent\" data-id=\"ca93809\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8c08faa elementor-widget elementor-widget-text-editor\" data-id=\"8c08faa\" 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><strong>Analysis of <\/strong><strong>quaternary ammoniums by HPLC-UV<\/strong><strong> after active sampling on XAD-2 tube<\/strong><\/p>\n\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\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3e0da5f e-con-full e-flex e-con e-parent\" data-id=\"3e0da5f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3931d33 elementor-widget elementor-widget-image\" data-id=\"3931d33\" 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 loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/HPLC-UV-actu-ammonium-quaternaire-1024x768.jpg\" class=\"attachment-large size-large wp-image-13935\" alt=\"\" srcset=\"https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/HPLC-UV-actu-ammonium-quaternaire-1024x768.jpg 1024w, https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/HPLC-UV-actu-ammonium-quaternaire-300x225.jpg 300w, https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/HPLC-UV-actu-ammonium-quaternaire-768x576.jpg 768w, https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/HPLC-UV-actu-ammonium-quaternaire-1536x1152.jpg 1536w, https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/HPLC-UV-actu-ammonium-quaternaire-scaled.jpg 2048w, https:\/\/tera-environnement.com\/wp-content\/uploads\/2025\/02\/HPLC-UV-actu-ammonium-quaternaire-600x450.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\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>\n\t\t<div class=\"elementor-element elementor-element-3ec2a25 e-flex e-con-boxed e-con e-parent\" data-id=\"3ec2a25\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-79ba615 elementor-widget elementor-widget-text-editor\" data-id=\"79ba615\" 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><em>HPLC-UV analysis of quaternary ammoniums<\/em><\/p>\n\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\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-790f650 e-flex e-con-boxed e-con e-parent\" data-id=\"790f650\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-195c338 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"195c338\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-36f09584 e-con-full e-flex e-con e-parent\" data-id=\"36f09584\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-6c366bbc e-flex e-con-boxed e-con e-child\" data-id=\"6c366bbc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-33018333 elementor-widget elementor-widget-text-editor\" data-id=\"33018333\" 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><strong>Contact us to find out more about our media supply and analysis services.<\/strong><\/p>\n\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\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5b778dd6 e-flex e-con-boxed e-con e-child\" data-id=\"5b778dd6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-6476937f e-flex e-con-boxed e-con e-child\" data-id=\"6476937f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5a95212a buton elementor-widget elementor-widget-button\" data-id=\"5a95212a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/tera-environnement.com\/en\/rental\/samplers\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Sampling media <\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\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-230bb815 buton elementor-widget elementor-widget-button\" data-id=\"230bb815\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/tera-environnement.com\/en\/air-analysis\/occupational-exposure\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Air analysis<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\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\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1db896f8 e-con-full e-flex e-con e-parent\" data-id=\"1db896f8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-27c86b39 e-flex e-con-boxed e-con e-child\" data-id=\"27c86b39\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3d3c6f8d elementor-widget elementor-widget-text-editor\" data-id=\"3d3c6f8d\" 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 align=\"justify\"><strong>Do you have any questions or do you need a quote? Contact us to find out more about our analysis services. <\/strong><\/p>\n\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\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1700fffb e-flex e-con-boxed e-con e-child\" data-id=\"1700fffb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-51b7884e e-flex e-con-boxed e-con e-child\" data-id=\"51b7884e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b55c9ef buton elementor-widget elementor-widget-button\" data-id=\"b55c9ef\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"mailto:commercial@tera-environnement.com%20\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Quote request<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\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\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>What are quaternary ammoniums? Quaternary ammoniums are a family of chemical compounds derived from ammonium (NH4+). Their general structure comprises a cationic moiety consisting of a nitrogen atom linked to four alkyl chains and a halogen atom (usually chlorine). They are mainly used for their disinfectant and biocidal properties. Quaternary ammoniums are classified by generation [&hellip;]<\/p>\n","protected":false},"author":42,"featured_media":13857,"comment_status":"closed","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[43],"tags":[],"class_list":["post-14140","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Measurement of quaternary ammoniums in workplace<\/title>\n<meta name=\"description\" content=\"TERA Environnement offers analysis of quaternary ammoniums, present in disinfectants. in workplace air: hospitals\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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