{"id":676100,"date":"2026-02-10T16:26:04","date_gmt":"2026-02-10T16:26:04","guid":{"rendered":"https:\/\/microscopemedia.com\/?p=676100"},"modified":"2026-02-10T16:26:04","modified_gmt":"2026-02-10T16:26:04","slug":"planeta-sub-o-ploaie-chimica-invizibila-poluarea-cu-substante-eterne-nu-da-semne-de-oprire","status":"publish","type":"post","link":"https:\/\/microscopemedia.com\/?p=676100","title":{"rendered":"Planeta, sub o ploaie chimic\u0103 invizibil\u0103: Poluarea cu \u201esubstan\u021be eterne\u201d nu d\u0103 semne de oprire"},"content":{"rendered":"
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Un nou studiu interna\u021bional atrage aten\u021bia c\u0103 o form\u0103 invizibil\u0103 de poluare chimic\u0103 cade pe \u00eentreaga planet\u0103.<\/p>\n

Oamenii de \u0219tiin\u021b\u0103 avertizeaz\u0103 c\u0103 substan\u021be introduse ini\u021bial pentru a proteja stratul de ozon contribuie acum la r\u0103sp\u00e2ndirea global\u0103 a unor \u201esubtan\u021be chimice eterne\u201d, scrie ScienceDaily<\/a><\/span>.<\/p>\n

Cercet\u0103tori de la Universitatea Lancaster au descoperit c\u0103 acidul trifluoroacetic, sau TFA, se acumuleaz\u0103 \u00een ploaie, ap\u0103, sol \u0219i ghea\u021b\u0103.<\/p>\n

Substan\u021ba a ajuns chiar \u0219i \u00een regiuni izolate, precum Arctica, de\u0219i este emis\u0103 la mari distan\u021be de aceste zone.<\/p>\n

Substan\u021be sigure pentru ozon, cu efecte pe termen lung<\/h2>\n

Studiul arat\u0103 c\u0103 substan\u021bele chimice folosite pentru a \u00eenlocui clorofluorocarburile (CFC) care distrug ozonul reprezint\u0103 o surs\u0103 major\u0103 de TFA.<\/p>\n

Printre aceste substan\u021be se afl\u0103 agen\u021bi frigorifici, gaze industriale \u0219i unele anestezice inhalatorii, dezvoltate pentru a \u00eenlocui chimicale folosite anterior \u00een frigidere, spray-uri \u0219i sisteme de aer condi\u021bionat, d\u0103un\u0103toare stratului de ozon.<\/p>\n

\u00centre anii 2000 \u0219i 2022, aproximativ 335.500 de tone de TFA au fost depuse pe suprafa\u021ba P\u0103m\u00e2ntului.<\/p>\n

Pentru c\u0103 multe dintre aceste gaze r\u0103m\u00e2n \u00een atmosfer\u0103 timp de decenii, poluarea continu\u0103 mult dup\u0103 momentul emisiilor.<\/p>\n

Cercet\u0103torii avertizeaz\u0103 c\u0103 produc\u021bia anual\u0103 de TFA ar putea atinge un v\u00e2rf oric\u00e2nd \u00eentre 2026 \u0219i 2100.<\/p>\n

Acest lucru \u00eenseamn\u0103 c\u0103 nivelurile din mediu ar putea continua s\u0103 creasc\u0103 timp de genera\u021bii.<\/p>\n

De ce TFA \u00eei \u00eengrijoreaz\u0103 pe oamenii de \u0219tiin\u021b\u0103<\/h2>\n

TFA face parte din familia PFAS, adesea numite \u201esubstan\u021be eterne\u201d deoarece rezist\u0103 descompunerii naturale.<\/p>\n

Agen\u021bia European\u0103 pentru Produse Chimice consider\u0103 TFA d\u0103un\u0103tor pentru via\u021ba acvatic\u0103.<\/p>\n

Substan\u021ba a fost detectat\u0103 \u0219i \u00een s\u00e2ngele \u0219i urina uman\u0103.<\/p>\n

Autorit\u0103\u021bile germane au propus clasificarea TFA ca poten\u021bial toxic pentru reproducerea uman\u0103.<\/p>\n

De\u0219i nivelurile actuale sunt considerate sub pragurile de pericol imediat, oamenii de \u0219tiin\u021b\u0103 avertizeaz\u0103 asupra acumul\u0103rii pe termen lung.<\/p>\n

Unii exper\u021bi sus\u021bin c\u0103 poluarea cu TFA ar trebui tratat\u0103 ca un risc la nivel de limit\u0103 planetar\u0103.<\/p>\n

Ghea\u021ba arctic\u0103 dezv\u0103luie r\u0103sp\u00e2ndirea global\u0103<\/h2>\n

Folosind modele atmosferice, cercet\u0103torii au urm\u0103rit modul \u00een care TFA se formeaz\u0103 \u0219i se deplaseaz\u0103 la nivel global.<\/p>\n

Rezultatele au fost confirmate prin analize ale carotelor de ghea\u021b\u0103 arctic\u0103 \u0219i ale probelor de ap\u0103 de ploaie.<\/p>\n

Aproape tot TFA detectat \u00een ghea\u021ba arctic\u0103 pare s\u0103 fie legat de substan\u021bele care au \u00eenlocuit CFC-urile.<\/p>\n

Acest lucru arat\u0103 c\u00e2t de u\u0219or pot c\u0103l\u0103tori gazele cu durat\u0103 lung\u0103 de via\u021b\u0103 \u00eenainte de a se descompune \u0219i a se depune.<\/p>\n

Noii agen\u021bi frigorifici adaug\u0103 incertitudine<\/h2>\n

Studiul atrage aten\u021bia \u0219i asupra agen\u021bilor frigorifici mai noi, precum HFO-1234yf, utiliza\u021bi \u00een sistemele de aer condi\u021bionat auto.<\/p>\n

De\u0219i sunt promova\u021bi ca fiind favorabili climei, aceste substan\u021be formeaz\u0103, de asemenea, TFA.<\/p>\n

Oamenii de \u0219tiin\u021b\u0103 spun c\u0103 monitorizarea global\u0103 trebuie extins\u0103 pentru a evalua riscurile viitoare.<\/p>\n

F\u0103r\u0103 interven\u021bii, ploaia chimic\u0103 invizibil\u0103 ar putea deveni o caracteristic\u0103 permanent\u0103 a mediului terestru.<\/p>\n","protected":false},"excerpt":{"rendered":"

Un nou studiu interna\u021bional atrage aten\u021bia c\u0103 o form\u0103 invizibil\u0103 de poluare chimic\u0103 cade pe \u00eentreaga planet\u0103. Oamenii de \u0219tiin\u021b\u0103 avertizeaz\u0103 c\u0103 substan\u021be introduse ini\u021bial pentru a proteja stratul de … Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":676101,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"Default","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/676100"}],"collection":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=676100"}],"version-history":[{"count":0,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/676100\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/media\/676101"}],"wp:attachment":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=676100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=676100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=676100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}