{"id":1062,"date":"2022-01-25T15:16:57","date_gmt":"2022-01-25T15:16:57","guid":{"rendered":"https:\/\/cnree.ro\/?p=1062"},"modified":"2022-12-08T09:54:50","modified_gmt":"2022-12-08T09:54:50","slug":"nanoplastic-gasit-la-poli","status":"publish","type":"post","link":"https:\/\/cnree.ro\/en\/nanoplastic-gasit-la-poli\/","title":{"rendered":"Cercet\u0103torii au g\u0103sit nanoplastic \u00een Groenlanda \u0219i Antarctica"},"content":{"rendered":"

Ghea\u021ba veche de zeci de ani din regiunile Polului Nord \u0219i Sud con\u021bine cantit\u0103\u021bi semnificative de particule de plastic la scar\u0103 nanometric\u0103. Studiind nucleele de ghea\u021b\u0103 din Groenlanda \u0219i Antarctica, oamenii de \u0219tiin\u021b\u0103 au identificat mai multe tipuri de particule nanoplastice, inclusiv particule care provin din anvelope. Deoarece nanoplasticele pot provoca efecte toxice, cercet\u0103torii abordeaz\u0103 faptul c\u0103 zonele \u00eendep\u0103rtate \u0219i curate pot con\u021bine mai mult\u0103 poluare cu nanoparticule dec\u00e2t se a\u0219tepta.<\/p>\n\n\n\n

Exist\u0103 deja cercet\u0103ri considerabile care m\u0103soar\u0103 materialele plastice \u00een intervalul de dimensiuni de la 5 mm la micrometri (microplastice). Cu toate acestea, se cunosc mult mai pu\u021bine despre resturile de plastic care s-au fragmentat la dimensiunea sub-micrometric\u0103 (nanoplastice). Deoarece aceste particule mici sunt u\u0219oare, este de a\u0219teptat s\u0103 fi ajuns deja \u00een cele mai \u00eendep\u0103rtate locuri de pe P\u0103m\u00e2nt, de ex. transportate pe tot globul prin aer.<\/p>\n\n\n\n

Folosind noi metode de m\u0103surare a nanoplasticelor, o echip\u0103 interna\u021bional\u0103 de oameni de \u0219tiin\u021b\u0103 a identificat acum particule de plastic la scar\u0103 nanometric\u0103 \u00een mostre de ghea\u021b\u0103 din Groenlanda \u0219i Antarctica. Probele au fost ob\u021binute din nuclee de ghea\u021b\u0103 ad\u00e2nci de 14 metri din Groenlanda \u0219i din nuclee de ghea\u021b\u0103 din Antarctica. \u00cen acest studiu au fost implica\u021bi cercet\u0103tori de la Universitatea Utrecht, Universitatea din Copenhaga \u0219i Universit\u00e9 Libre de Bruxelles.<\/p>\n\n\n\n

Autorul principal al studiului, Du\u0161an Materi\u0107, de la Institutul pentru Cercetare Marin\u0103 \u0219i Atmosferic\u0103 Utrecht (IMAU) a declarat \u201eAcum \u0219tim c\u0103 nanoplasticele sunt transportate \u00een aceste col\u021buri ale P\u0103m\u00e2ntului \u00een aceste cantit\u0103\u021bi. Acest lucru indic\u0103 faptul c\u0103 nanoplasticele sunt \u00eentr-adev\u0103r o problem\u0103 de poluare mai mare dec\u00e2t am crezut\u201d.<\/p>\n\n\n\n

\"\"

Surs\u0103 imagine –\u00a0 Matt Palmer<\/a>, Unsplas<\/a>h<\/figcaption><\/figure>\n\n\n\n

Nanoplasticele sunt materiale plastice care au dimensiuni mai mici de un micrometru. Dimensiunea lor mic\u0103 \u00eenseamn\u0103 c\u0103 sunt mai greu de studiat dec\u00e2t microplasticul sau plasticul \u00eentre cinci milimetri \u0219i un micrometru. Dar pot fi \u0219i mai periculoase.<\/p>\n\n\n\n

\u201eNanoplasticele sunt foarte active din punct de vedere toxicologic \u00een compara\u021bie cu, de exemplu, microplasticele \u0219i de aceea acest lucru este foarte important\u201d, a spus Materi\u0107 pentru The Guardian.<\/p>\n\n\n\n

\u201e\u00cen miezul Groenlandei, vedem poluarea cu nanoplastice care are loc p\u00e2n\u0103 \u00een anii 1960. Deci, organismele din acea regiune, \u0219i probabil din \u00eentreaga lume, au fost expuse la aceasta de ceva timp \u00eencoace\u201d, a spus Materi\u0107 \u00een comunicatul de pres\u0103.<\/p>\n\n\n\n

Studiul a analizat, de asemenea, tipurile de plastic prezente \u00een probe. Jum\u0103tate din nanoplasticele din Groenlanda erau polietilen\u0103 (PE), tipul de plastic folosit pentru pungi \u0219i ambalaje de plastic, potrivit The Guardian. Un sfert provine din anvelope, iar o cincime au fost polietilen tereftalat (PET), care este folosit pentru \u00eembr\u0103c\u0103minte \u0219i sticle. \u00cen Antarctica, nu existau particule de anvelope. Jum\u0103tate erau PE \u0219i polipropilena, care este folosit\u0103 pentru recipientele \u0219i \u021bevile pentru alimente, a fost urm\u0103toarea cea mai comun\u0103. Cantitatea de particule nanoplastice pare s\u0103 difere \u00eentre probele de ghea\u021b\u0103 din nord \u0219i din sud. Ghea\u021ba din Groenlanda con\u021binea \u00een medie 13,2 ng\/mL, \u00een timp ce ghea\u021ba din Antarctica con\u021binea 52,3 ng\/mL.<\/p>\n\n\n\n

Exist\u0103 o alarm\u0103 din ce \u00een ce mai mare cu privire la amploarea polu\u0103rii cu microplastice, care a fost g\u0103sit\u0103 peste tot, de la Everest p\u00e2n\u0103 la Arctica.<\/p>","protected":false},"excerpt":{"rendered":"

Ghea\u021ba veche de zeci de ani din regiunile Polului Nord \u0219i Sud con\u021bine cantit\u0103\u021bi semnificative de particule de plastic la scar\u0103 nanometric\u0103. Studiind nucleele de ghea\u021b\u0103 din Groenlanda \u0219i Antarctica, oamenii de \u0219tiin\u021b\u0103 au identificat mai multe tipuri de particule nanoplastice, inclusiv particule care provin din anvelope. Deoarece nanoplasticele pot provoca efecte toxice, cercet\u0103torii abordeaz\u0103 […]<\/p>","protected":false},"author":2,"featured_media":1063,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"no-sidebar","site-content-layout":"plain-container","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":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"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":""},"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":[8],"tags":[],"class_list":["post-1062","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noutati"],"uagb_featured_image_src":{"full":["https:\/\/cnree.ro\/wp-content\/uploads\/2022\/01\/matt-palmer-M7EnqaUt6Yg-unsplash.jpg",1920,1280,false],"thumbnail":["https:\/\/cnree.ro\/wp-content\/uploads\/2022\/01\/matt-palmer-M7EnqaUt6Yg-unsplash-150x150.jpg",150,150,true],"medium":["https:\/\/cnree.ro\/wp-content\/uploads\/2022\/01\/matt-palmer-M7EnqaUt6Yg-unsplash-300x200.jpg",300,200,true],"medium_large":["https:\/\/cnree.ro\/wp-content\/uploads\/2022\/01\/matt-palmer-M7EnqaUt6Yg-unsplash-768x512.jpg",768,512,true],"large":["https:\/\/cnree.ro\/wp-content\/uploads\/2022\/01\/matt-palmer-M7EnqaUt6Yg-unsplash-1024x683.jpg",1024,683,true],"1536x1536":["https:\/\/cnree.ro\/wp-content\/uploads\/2022\/01\/matt-palmer-M7EnqaUt6Yg-unsplash-1536x1024.jpg",1536,1024,true],"2048x2048":["https:\/\/cnree.ro\/wp-content\/uploads\/2022\/01\/matt-palmer-M7EnqaUt6Yg-unsplash.jpg",1920,1280,false],"trp-custom-language-flag":["https:\/\/cnree.ro\/wp-content\/uploads\/2022\/01\/matt-palmer-M7EnqaUt6Yg-unsplash-18x12.jpg",18,12,true]},"uagb_author_info":{"display_name":"cnree.ro","author_link":"https:\/\/cnree.ro\/en\/author\/cnree-ro\/"},"uagb_comment_info":0,"uagb_excerpt":"Ghea\u021ba veche de zeci de ani din regiunile Polului Nord \u0219i Sud con\u021bine cantit\u0103\u021bi semnificative de particule de plastic la scar\u0103 nanometric\u0103. Studiind nucleele de ghea\u021b\u0103 din Groenlanda \u0219i Antarctica, oamenii de \u0219tiin\u021b\u0103 au identificat mai multe tipuri de particule nanoplastice, inclusiv particule care provin din anvelope. Deoarece nanoplasticele pot provoca efecte toxice, cercet\u0103torii abordeaz\u0103…","_links":{"self":[{"href":"https:\/\/cnree.ro\/en\/wp-json\/wp\/v2\/posts\/1062","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cnree.ro\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cnree.ro\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cnree.ro\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cnree.ro\/en\/wp-json\/wp\/v2\/comments?post=1062"}],"version-history":[{"count":1,"href":"https:\/\/cnree.ro\/en\/wp-json\/wp\/v2\/posts\/1062\/revisions"}],"predecessor-version":[{"id":1064,"href":"https:\/\/cnree.ro\/en\/wp-json\/wp\/v2\/posts\/1062\/revisions\/1064"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cnree.ro\/en\/wp-json\/wp\/v2\/media\/1063"}],"wp:attachment":[{"href":"https:\/\/cnree.ro\/en\/wp-json\/wp\/v2\/media?parent=1062"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cnree.ro\/en\/wp-json\/wp\/v2\/categories?post=1062"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cnree.ro\/en\/wp-json\/wp\/v2\/tags?post=1062"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}