{"id":6334,"date":"2025-06-12T19:36:16","date_gmt":"2025-06-12T23:36:16","guid":{"rendered":"https:\/\/sargassummonitoring.com\/?p=6334"},"modified":"2025-06-13T09:34:19","modified_gmt":"2025-06-13T13:34:19","slug":"sargassum-related-pollution-the-key-role-of-h2s-monitoring","status":"publish","type":"post","link":"https:\/\/sargassummonitoring.com\/fr\/sargassum-related-pollution-the-key-role-of-h2s-monitoring\/","title":{"rendered":"Pollution li\u00e9e aux sargasses : le r\u00f4le cl\u00e9 de la surveillance du H\u2082S"},"content":{"rendered":"<figure class=\"wp-block-post-featured-image\"><img loading=\"lazy\" decoding=\"async\" width=\"990\" height=\"640\" src=\"https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/06\/H\u2082S-sargassum-protection-sargassum-monitoring.webp\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Key Role of H\u2082S Monitoring and detector-sargassum monitoring-monitoreo de sargazo-surveillance des sargasses-H2S danger-gaz-hydrogen sulfide-hydrogene sulfure-sulfuro de hidr\u00f3geno\" style=\"object-fit:cover;\" srcset=\"https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/06\/H\u2082S-sargassum-protection-sargassum-monitoring.webp 990w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/06\/H\u2082S-sargassum-protection-sargassum-monitoring-300x194.webp 300w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/06\/H\u2082S-sargassum-protection-sargassum-monitoring-768x496.webp 768w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/06\/H\u2082S-sargassum-protection-sargassum-monitoring-18x12.webp 18w\" sizes=\"auto, (max-width: 990px) 100vw, 990px\" \/><\/figure>\n\n\n<p class=\"has-small-font-size\">Photo of the French army coming to pick up sargassum in 2018 &#8211; <\/p>\n\n\n\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-8448343880170654\"\n     crossorigin=\"anonymous\"><\/script>\n<ins class=\"adsbygoogle\"\n     style=\"display:block; text-align:center;\"\n     data-ad-layout=\"in-article\"\n     data-ad-format=\"fluid\"\n     data-ad-client=\"ca-pub-8448343880170654\"\n     data-ad-slot=\"3026197241\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n\n\n\n<div style=\"height:44px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" style=\"font-size:25px\"><strong>7\u202fppm de H\u2082S mesur\u00e9s sur un tas de sargasses \u00e0 Playa del Carmen:<\/strong> <strong>Un niveau pr\u00e9occupant<\/strong><\/h2>\n\n\n\n<p>Un reportage scientifique r\u00e9alis\u00e9 r\u00e9cemment \u00e0 Playa del Carmen, au Mexique, a montr\u00e9 une concentration de 7\u202fppm de sulfure d\u2019hydrog\u00e8ne (H\u2082S) mesur\u00e9e directement au-dessus d\u2019un amas de sargasses \u00e9chou\u00e9es. Ce gaz toxique, produit naturellement lors de la d\u00e9composition de ces algues, peut avoir des effets s\u00e9rieux sur la sant\u00e9, m\u00eame \u00e0 faible dose.<\/p>\n\n\n\n<figure class=\"wp-block-video\"><video controls src=\"https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/06\/Mexico-Playa-del-Carmen-El-Recodo-sargassum-monitoring-sargazo-sargasses-2025.mp4\"><\/video><\/figure>\n\n\n\n<h3 class=\"wp-block-heading has-medium-font-size\"><strong>Qu\u2019indique ce seuil ?<\/strong><\/h3>\n\n\n\n<p>Le H\u2082S est un gaz invisible \u00e0 l\u2019odeur d\u2019\u0153uf pourri, dont l\u2019odeur dispara\u00eet \u00e0 forte concentration en paralysant l\u2019olfaction. \u00c0 7\u202fppm, plusieurs seuils d\u2019alerte internationaux sont d\u00e9pass\u00e9s:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>TLV-TWA (ACGIH)<\/strong>: 1\u202fppm sur 8\u202fh<\/li>\n\n\n\n<li><strong>STEL (ACGIH)<\/strong>: 5\u202fppm sur 15\u202fmin<\/li>\n\n\n\n<li><strong>NIOSH<\/strong>: plafond 10\u202fppm<\/li>\n\n\n\n<li><strong>OSHA<\/strong>\u202f: limite travailleurs 20\u202fppm, pic 50\u202fppm sous 10\u202fmin<\/li>\n\n\n\n<li><strong>IDLH<\/strong>: 100 ppm (danger imm\u00e9diat pour la vie ou la sant\u00e9)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading has-medium-font-size\"><strong>\u00c0 quoi s\u2019attendre sur le terrain ?<\/strong><\/h3>\n\n\n\n<p>Une \u00e9tude \u00e0 Puerto Morelos (Mexique) montre:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>23\u202f% des lectures sup\u00e9rieurs \u00e0\u202f5\u202fppm, avec des pics sup\u00e9rieurs \u00e0 100\u202fppm<\/li>\n\n\n\n<li>\u00c0 10\u202fm de distance, les valeurs chutent \u00e0 moins de 0,1\u202fppm dans 90\u202f% des cas, mais les panaches de gaz restent volatils<\/li>\n<\/ul>\n\n\n\n<p>Ces donn\u00e9es confirment que le risque est localis\u00e9 mais s\u00e9rieux, en particulier pour les collecteurs de sargasses, les riverains imm\u00e9diats ou les enfants.<\/p>\n\n\n\n<div class=\"wp-block-uagb-image uagb-block-957c29ef wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/06\/H\u2082S-sargassum-protection-sargassum-monitoring-mexico-1024x576.webp ,https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/06\/H\u2082S-sargassum-protection-sargassum-monitoring-mexico-scaled.webp 780w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/06\/H\u2082S-sargassum-protection-sargassum-monitoring-mexico-scaled.webp 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/06\/H\u2082S-sargassum-protection-sargassum-monitoring-mexico-1024x576.webp\" alt=\"\" class=\"uag-image-6346\" width=\"6000\" height=\"3376\" title=\"H\u2082S-sargassum-protection-sargassum-monitoring-mexico\" loading=\"lazy\" role=\"img\"\/><\/figure><\/div>\n\n\n\n<div style=\"height:42px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading has-medium-font-size\"><strong>Ce que recommande l\u2019ANSES<\/strong><\/h3>\n\n\n\n<p>En France, l'ANSES fournit un cadre d\u00e9taill\u00e9 pour l'exposition au H\u2082S :<\/p>\n\n\n\n<ul start=\"1\" class=\"wp-block-list\">\n<li><strong>0.2\u20131 ppm<\/strong>\u202f: information au public, collecte rapide<\/li>\n\n\n\n<li><strong>1\u20135 ppm<\/strong>: \u00e9viter la zone pour les personnes vuln\u00e9rables<\/li>\n\n\n\n<li><strong>&gt;5 ppm<\/strong>: acc\u00e8s limit\u00e9 aux professionnels \u00e9quip\u00e9s d\u2019un d\u00e9tecteur individuel, mesures chez les riverains<\/li>\n<\/ul>\n\n\n\n<p>Pour les travailleurs, l\u2019ANSES recommande :<\/p>\n\n\n\n<div class=\"wp-block-uagb-image uagb-block-c3eaa11b wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/06\/H\u2082S-sargassum-protection-sargassum-monitoring-2.webp ,https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/06\/H\u2082S-sargassum-protection-sargassum-monitoring-2.webp 780w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/06\/H\u2082S-sargassum-protection-sargassum-monitoring-2.webp 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/06\/H\u2082S-sargassum-protection-sargassum-monitoring-2.webp\" alt=\"\" class=\"uag-image-6348\" width=\"720\" height=\"573\" title=\"H\u2082S-sargassum-protection-sargassum-monitoring (2)\" loading=\"lazy\" role=\"img\"\/><\/figure><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D\u00e9tecteur H\u2082S portable pr\u00e8s des voies respiratoires<\/li>\n\n\n\n<li>\u00c9quipement de protection (gants, bottes, masque ou hood filtrant d\u00e8s 10\u202fppm)<\/li>\n\n\n\n<li>Ramassage m\u00e9canique, formation obligatoire et tra\u00e7abilit\u00e9<\/li>\n<\/ul>\n\n\n\n<p>L\u2019agence souligne \u00e9galement la n\u00e9cessit\u00e9 de mieux comprendre les effets d\u2019une exposition chronique au H\u2082S et l\u2019impact environnemental global des sargasses.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-medium-font-size\"><strong>Recommandations Pratiques<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Informer imm\u00e9diatement le public d\u00e8s formation de tas suspects ou odeurs perceptibles (&gt;\u202f0,2\u202fppm)<\/li>\n\n\n\n<li>\u00c9viter les accumulations prolong\u00e9es : ramassage rapide = r\u00e9duction des gaz<\/li>\n\n\n\n<li>Prot\u00e9ger les collecteurs : d\u00e9tecteurs H\u2082S, masques filtrants \u00e0 partir de 5\u202fppm<\/li>\n\n\n\n<li>Interdire l\u2019acc\u00e8s au public si H\u2082S d\u00e9passe les\u202f5\u202fppm<\/li>\n\n\n\n<li>Mettre en place un suivi r\u00e9gulier des zones \u00e0 risque<\/li>\n\n\n\n<li>Former syst\u00e9matiquement les intervenants et assurer la tra\u00e7abilit\u00e9 des expositions<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading has-medium-font-size\"><strong>Pourquoi agir maintenant ?<\/strong><\/h3>\n\n\n\n<p>Des sympt\u00f4mes comme irritations oculaires, respiratoires, maux de t\u00eate, naus\u00e9es et inconfort sont fr\u00e9quents d\u00e8s 5\u201310\u202fppm. Des \u00e9tudes en Martinique montrent une augmentation des consultations m\u00e9dicales chez les personnes vivant \u00e0 proximit\u00e9 d\u2019arrivages massifs de sargasses expos\u00e9es chroniquement. Dans certaines zones, ces personnes peuvent \u00eatre expos\u00e9es jusqu\u2019\u00e0 50 jours par an \u00e0 des concentrations variant de 0 \u00e0 10\u202fppm.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-medium-font-size\"><strong>\u00c0 retenir<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>7\u202fppm de H\u2082S est un signal fort, au-del\u00e0 des seuils de s\u00e9curit\u00e9 \u00e0 court terme pour tous<\/li>\n\n\n\n<li>C\u2019est une urgence sanitaire locale : protection, information, ramassage rapide et coordination renforc\u00e9e sont indispensables<\/li>\n<\/ul>\n\n\n\n<div class=\"wp-block-uagb-image uagb-block-3573a0fd wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/06\/H\u2082S-detector-sargassum-protection-sargassum-monitoring-1024x693.webp ,https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/06\/H\u2082S-detector-sargassum-protection-sargassum-monitoring.webp 780w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/06\/H\u2082S-detector-sargassum-protection-sargassum-monitoring.webp 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/06\/H\u2082S-detector-sargassum-protection-sargassum-monitoring-1024x693.webp\" alt=\"\" class=\"uag-image-6347\" width=\"1229\" height=\"832\" title=\"H\u2082S-detector-sargassum-protection-sargassum-monitoring\" loading=\"lazy\" role=\"img\"\/><\/figure><\/div>\n\n\n\n<div style=\"height:41px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Chez Sargassum Monitoring, nous appelons \u00e0 la mise en \u0153uvre urgente de seuils harmonis\u00e9s, \u00e0 une vigilance renforc\u00e9e et \u00e0 la reconnaissance officielle de ce risque dans toutes les zones touch\u00e9es. Une r\u00e9ponse collective et coordonn\u00e9e est essentielle.<\/p>\n\n\n\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-8448343880170654\"\n     crossorigin=\"anonymous\"><\/script>\n<ins class=\"adsbygoogle\"\n     style=\"display:block; text-align:center;\"\n     data-ad-layout=\"in-article\"\n     data-ad-format=\"fluid\"\n     data-ad-client=\"ca-pub-8448343880170654\"\n     data-ad-slot=\"3026197241\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n\n\n\n<div style=\"height:34px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p style=\"font-size:15px\">Sources : ANSES, HCSP, ACGIH, OSHA, NIOSH, \u00e9tudes scientifiques au Mexique et dans les Antilles fran\u00e7aises<\/p>","protected":false},"excerpt":{"rendered":"<p>Photo of the French army coming to pick up sargassum in 2018 &#8211; 7 ppm of H\u2082S Measured on a Sargassum Pile in Playa del Carmen: A Concerning Level A recent scientific report filmed in Playa del Carmen, Mexico, revealed a concentration of 7 ppm of hydrogen sulfide (H\u2082S) measured directly above a sargassum pile. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6343,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[3],"tags":[],"class_list":["post-6334","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>The Key Role of H\u2082S Monitoring: Sargassum-Related Pollution - Sargassum Monitoring<\/title>\n<meta name=\"description\" content=\"A scientific report in Playa del Carmen, Mexico, revealed a concentration of 7 ppm of hydrogen sulfide (H\u2082S). 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