{"id":32376,"date":"2025-11-12T21:07:04","date_gmt":"2025-11-13T00:07:04","guid":{"rendered":"https:\/\/nogoyatimes.com\/?p=32376"},"modified":"2025-11-12T21:07:04","modified_gmt":"2025-11-13T00:07:04","slug":"detectaron-en-el-polo-sur-concentraciones-de-acidos-perfluoroalquilos-que-son-y-por-que-generan-preocupacion","status":"publish","type":"post","link":"https:\/\/nogoyatimes.com\/?p=32376","title":{"rendered":"Detectaron en el Polo Sur concentraciones de \u00e1cidos perfluoroalquilos: qu\u00e9 son y por qu\u00e9 generan preocupaci\u00f3n"},"content":{"rendered":"<p>Se\u00a0comprob\u00f3 la llegada y acumulaci\u00f3n de esos\u00a0compuestos\u00a0en aguas cercanas a la\u00a0Ant\u00e1rtida\u00a0a trav\u00e9s de la\u00a0atm\u00f3sfera. La investigaci\u00f3n revel\u00f3 que los llamados\u00a0\u00e1cidos\u00a0perfluoroalquilos logran superar las barreras naturales y se depositan en el oc\u00e9ano austral a trav\u00e9s de la lluvia o la nieve.<\/p>\n<p>&nbsp;<\/p>\n<p>Los &#8220;qu\u00edmicos eternos&#8221; son compuestos altamente resistentes que no desaparecen del ambiente y que pueden acumularse tanto en seres vivos como en lugares remotos.<\/p>\n<p>&nbsp;<\/p>\n<p>Un estudio de cient\u00edficos de\u00a0Espa\u00f1a\u00a0comprob\u00f3 la llegada y acumulaci\u00f3n de esos\u00a0compuestos\u00a0en aguas cercanas a la\u00a0Ant\u00e1rtida\u00a0a trav\u00e9s de la\u00a0atm\u00f3sfera.<\/p>\n<p>&nbsp;<\/p>\n<p>La investigaci\u00f3n publicada en Communications Earth &amp; Environment revel\u00f3 que los llamados \u00e1cidos perfluoroalquilos (m\u00e1s conocidos en ingl\u00e9s como PFAAs) logran superar las barreras naturales y se depositan en el oc\u00e9ano austral a trav\u00e9s de la lluvia o la nieve.<\/p>\n<p>El trabajo fue realizado por el\u00a0Instituto de Diagn\u00f3stico Ambiental y Estudios del Agua (IDAEA-CSIC)\u00a0y el\u00a0Instituto de Qu\u00edmica Org\u00e1nica General (IQOG-CSIC), con participaci\u00f3n de expertos como\u00a0Jordi Dachs,\u00a0Bego\u00f1a Jim\u00e9nez\u00a0y\u00a0N\u00faria Trilla-Prieto.<\/p>\n<p>&nbsp;<\/p>\n<p>Recolectaron muestras en expediciones de investigaci\u00f3n en 2021 y 2022.<\/p>\n<p>Las\u00a0sustancias per- y polifluoralquiladas (PFAS), conocidas como qu\u00edmicos eternos, resisten los procesos naturales de degradaci\u00f3n y se utilizan en productos comunes como envases de comida, textiles y espumas para apagar incendios.<\/p>\n<p>&nbsp;<\/p>\n<p>Una parte de estos compuestos, como el PFOS y el PFOA, se considera riesgosa para la salud humana por su posible relaci\u00f3n con ciertos tipos de c\u00e1ncer, seg\u00fan la\u00a0Organizaci\u00f3n Mundial de la Salud (OMS).<\/p>\n<p>&nbsp;<\/p>\n<p>La comunidad cient\u00edfica internacional quer\u00eda saber si exist\u00eda otra ruta, distinta de las corrientes oce\u00e1nicas, que permitiera a estos contaminantes llegar hasta el extremo sur del planeta.<\/p>\n<p>&nbsp;<\/p>\n<p>Adem\u00e1s, era clave determinar si los niveles de qu\u00edmicos eternos en la Ant\u00e1rtida eran relevantes y comparables con los de regiones mucho m\u00e1s pobladas.<\/p>\n<p>&nbsp;<\/p>\n<p>El objetivo del estudio fue comprobar si los PFAAs pod\u00edan acumularse en el Oc\u00e9ano Austral e identificar el mecanismo exacto que explica su llegada a la regi\u00f3n.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Contaminaci\u00f3n invisible en la Ant\u00e1rtida<\/p>\n<p>&nbsp;<\/p>\n<p>El equipo de investigadores de Espa\u00f1a llev\u00f3 adelante dos campa\u00f1as de muestreo de agua, cruzando el\u00a0Atl\u00e1ntico Norte\u00a0hasta llegar al\u00a0oc\u00e9ano Ant\u00e1rtico. Usaron la misma t\u00e9cnica para analizar y comparar los resultados de las muestras.<\/p>\n<p>&nbsp;<\/p>\n<p>Identificaron concentraciones similares de\u00a0PFAAs\u00a0en ambos extremos: la Ant\u00e1rtida y el Atl\u00e1ntico norte, zonas enormemente distantes entre s\u00ed y con diferentes niveles de presencia humana.<\/p>\n<p>&nbsp;<\/p>\n<p>El cient\u00edfico y coautor\u00a0Dachs\u00a0coment\u00f3: \u201cHace 15 a\u00f1os se sugiri\u00f3 que los PFAS no pod\u00edan llegar a Ant\u00e1rtida por las corrientes oce\u00e1nicas. Con este estudio hemos demostrado que s\u00ed lo hacen, pero transportados por la atm\u00f3sfera, mediante la nieve y la lluvia\u201d.<\/p>\n<p>&nbsp;<\/p>\n<p>El transporte ocurre a trav\u00e9s de aerosoles marinos, part\u00edculas microsc\u00f3picas que pasan a la atm\u00f3sfera y vuelven a caer sobre el oc\u00e9ano ant\u00e1rtico con las precipitaciones.<\/p>\n<p>&nbsp;<\/p>\n<p>Los valores m\u00e1s altos de PFAAs se detectaron en puntos bajo influencia de las costas de\u00a0Brasil\u00a0y\u00a0Argentina.<\/p>\n<p>&nbsp;<\/p>\n<p>Ese resultado fue resaltado por\u00a0Bego\u00f1a Jim\u00e9nez: \u201cEl uso de la misma metodolog\u00eda para todas las regiones oce\u00e1nicas estudiadas permite la comparaci\u00f3n de concentraciones entre las distintas regiones y as\u00ed confirmar que los niveles de PFAAs en la Ant\u00e1rtida son parecidos a los del Atl\u00e1ntico norte, una regi\u00f3n m\u00e1s pr\u00f3xima a las fuentes antropog\u00e9nicas de contaminaci\u00f3n\u201d.<\/p>\n<p>&nbsp;<\/p>\n<p>Lo que revel\u00f3 el an\u00e1lisis cient\u00edfico<\/p>\n<p>&nbsp;<\/p>\n<p>No existen v\u00edas naturales que eliminen estos qu\u00edmicos a la par de su entrada al ecosistema ant\u00e1rtico. Por eso, los cient\u00edficos confirmaron el riesgo de acumulaci\u00f3n progresiva en el ecosistema austral.<\/p>\n<p>&nbsp;<\/p>\n<p>N\u00faria Trilla-Prieto\u00a0indic\u00f3: \u201cLa capacidad de transporte a larga distancia y la persistencia permite que estos compuestos se acumulen porque no hay v\u00edas de eliminaci\u00f3n o de salida para compensar su nivel de entrada\u201d.<\/p>\n<p>&nbsp;<\/p>\n<p>El trabajo concluy\u00f3 que la persistencia de estas sustancias representa el mayor riesgo ambiental para el futuro.<\/p>\n<p>&nbsp;<\/p>\n<p>La investigaci\u00f3n contribuye a la revisi\u00f3n internacional de los modelos de contaminaci\u00f3n global en ambientes extremos y aporta pruebas cient\u00edficas esenciales para normativas futuras. (Fuente: Infobae)<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-426\" src=\"http:\/\/nogoyatimes.com\/wp-content\/uploads\/2023\/06\/43-Consultorios-nogoya.png\" alt=\"\" width=\"720\" height=\"90\" srcset=\"https:\/\/nogoyatimes.com\/wp-content\/uploads\/2023\/06\/43-Consultorios-nogoya.png 720w, https:\/\/nogoyatimes.com\/wp-content\/uploads\/2023\/06\/43-Consultorios-nogoya-300x38.png 300w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center\"><a href=\"http:\/\/nogoyaradios.com\/\"><strong>Escuch\u00e1 La 100 #Nogoy\u00e1<\/strong><\/a><strong>\u00a0en vivo<\/strong><strong>\u00a0Seguinos en\u00a0<\/strong><a href=\"https:\/\/www.facebook.com\/nogoyaradiosnog\"><strong>Facebook<\/strong><\/a><strong>\u00a0Seguinos en\u00a0<\/strong><a href=\"https:\/\/twitter.com\/NogoyaRadios\"><strong>Twitter<\/strong><\/a><\/p>\n<p style=\"text-align: center\"><strong><em>Nogoy\u00e1 Radios es una Agencia de Medios que cuenta con espacios publicitarios adecuados para la difusi\u00f3n de su Empresa, Profesi\u00f3n y\/o Servicios.<\/em><\/strong><a href=\"https:\/\/web.facebook.com\/hashtag\/nogoy%C3%A1\"><strong><em>#Nogoy\u00e1<\/em><\/strong><\/a><strong><em>\u00a0Radios\u00a0<\/em><\/strong><strong><em>3435-429289 \/ 3435-616203 contacto@nogoyaradios.com<\/em><\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>Por qu\u00e9 importan los qu\u00edmicos eternos<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Se\u00a0comprob\u00f3 la llegada y acumulaci\u00f3n de esos\u00a0compuestos\u00a0en aguas cercanas a la\u00a0Ant\u00e1rtida\u00a0a trav\u00e9s de la\u00a0atm\u00f3sfera. La investigaci\u00f3n revel\u00f3 que los llamados\u00a0\u00e1cidos\u00a0perfluoroalquilos logran superar las barreras naturales y se depositan en el oc\u00e9ano austral a trav\u00e9s de la lluvia o la nieve&#8230;.<\/p>\n","protected":false},"author":2,"featured_media":32377,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,3,17],"tags":[],"class_list":["post-32376","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-internacionales","category-noticias","category-sociedad"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Detectaron en el Polo Sur concentraciones de \u00e1cidos perfluoroalquilos: qu\u00e9 son y por qu\u00e9 generan preocupaci\u00f3n - Nogoy\u00e1 Times<\/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:\/\/nogoyatimes.com\/?p=32376\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Detectaron en el Polo Sur concentraciones de \u00e1cidos perfluoroalquilos: qu\u00e9 son y por qu\u00e9 generan preocupaci\u00f3n - Nogoy\u00e1 Times\" \/>\n<meta property=\"og:description\" content=\"Se\u00a0comprob\u00f3 la llegada y acumulaci\u00f3n de esos\u00a0compuestos\u00a0en aguas cercanas a la\u00a0Ant\u00e1rtida\u00a0a trav\u00e9s de la\u00a0atm\u00f3sfera. 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