{"id":13115,"date":"2021-07-13T14:04:42","date_gmt":"2021-07-13T17:04:42","guid":{"rendered":"https:\/\/mindthegraph.com\/blog\/?p=13115"},"modified":"2023-01-05T14:27:25","modified_gmt":"2023-01-05T17:27:25","slug":"plastic-pollution-are-microplastics-contaminants-an-emerging-concern","status":"publish","type":"post","link":"https:\/\/mindthegraph.com\/blog\/lt\/plastiko-tarsa-ar-mikroplastiko-tersalai-yra-kylantis-rupestis\/","title":{"rendered":"Plastiko tar\u0161a: Ar mikroplastiko ter\u0161alai kelia nauj\u0105 susir\u016bpinim\u0105?"},"content":{"rendered":"

Pra\u0117jo beveik 20 met\u0173 nuo tada, kai mokslininkai atrado mikroplastiko keliam\u0105 pavoj\u0173 - dauguma tyrim\u0173 buvo skirti j\u016br\u0173 gyv\u016bnijai. <\/p>\n\n\n\n

Bet kokia ma\u017eesn\u0117 nei 5 milimetr\u0173 ilgio plastiko dalel\u0117 vadinama mikroplastiku.<\/p>\n\n\n\n

Mikroplastiko tyrim\u0173 prad\u017eioje mokslininkai daugiausia tyrin\u0117jo mikrogranules ir pirminio plastiko granules, kuri\u0173 nebuvo galima suformuoti \u012f gaminius, \u012fskaitant dideli\u0173 \u0161iuk\u0161li\u0173 gabalus ar sudu\u017eusius butelius, kurie l\u0117tai ardavo.<\/p>\n\n\n\n

Patikrinkite Mind the Graph galerija<\/a> iliustracijos, susijusios su \u0161io tinklara\u0161\u010dio tema. Spustel\u0117kite \u017eemiau esant\u012f paveiksl\u0117l\u012f!<\/p>\n\n\n\n

\"Mind<\/a><\/figure>\n\n\n\n

\u0160ie ter\u0161alai nuplaunami up\u0117mis ir u\u017eter\u0161ia vandenynus. Okeanografai apskai\u010diavo, kad \u017dem\u0117s pavir\u0161iniuose vandenyse yra nuo 15 iki 51 trilijono plastiko daleli\u0173.<\/p>\n\n\n\n

Keli \u0161imtai tyrim\u0173 atskleid\u0117, kad mikroplastiko yra vandens organizmuose. Be to, nuo to laiko nustatyta daug mikroplastiko \u0161altini\u0173, pavyzd\u017eiui, plastiko dalel\u0117s, kurias perne\u0161a keliais va\u017eiuojan\u010dios transporto priemon\u0117s, ir sintetiniai pluo\u0161tai, i\u0161siskiriantys i\u0161 drabu\u017ei\u0173. <\/p>\n\n\n\n

Be to, \u017emon\u0117s nuryja arba \u012fkvepia plastiko i\u0161 nenustatyt\u0173 \u0161altini\u0173, nes \u0161iuk\u0161l\u0117s sklinda tarp j\u016bros ir sausumos. Taip pat svarbu nustatyti, ar ma\u017ei plastiko gabal\u0117liai daro kok\u012f nors neigiam\u0105 poveik\u012f \u017emon\u0117ms ar gyv\u016bnams. <\/p>\n\n\n\n

Matuodamos tar\u0161os poveik\u012f, aplinkosaugos reguliavimo institucijos \u017eengia pirm\u0105 \u017eingsn\u012f siekiant kiekybi\u0161kai \u012fvertinti rizik\u0105 sveikatai. Atsi\u017evelgiant \u012f did\u0117jan\u010di\u0105 mikroplastiko koncentracij\u0105 ir kitus sutrikimus, kuriuos gali sukelti j\u016bros g\u0117rybi\u0173 vartojimas, tai kelia didel\u012f susir\u016bpinim\u0105 ir naujus poky\u010dius kv\u0117pavimo problem\u0173 atvejais.<\/p>\n\n\n\n

Kaip konkre\u010diai kenkia mikroplastikai?<\/strong><\/h2>\n\n\n\n

\u0160i\u0173 plastiko daleli\u0173 atsiradimo prie\u017eastys ir poveikis yra daugelio tyrim\u0173 objektas. Priklausomai nuo j\u0173 dyd\u017eio ar geb\u0117jimo prasiskverbti \u012f audinius ar l\u0105steles, jos gali sukelti dirginim\u0105 vien d\u0117l savo buvimo.<\/p>\n\n\n\n

Did\u017eiausi\u0105 r\u016bpest\u012f mokslininkams kelia nanoplastmas\u0117s - ma\u017eiausios dalel\u0117s, kuri\u0173 skersmuo didesnis nei mikrometras. Jei kok\u012f nors neigiam\u0105 poveik\u012f sukelia mikroplastiko cheminis toksi\u0161kumas, jie paprastai b\u016bna didesnio dyd\u017eio.<\/p>\n\n\n\n

Daugelis plastik\u0173 gamyboje naudojam\u0173 pried\u0173 kelia pavoj\u0173 sveikatai, nes neigiamai veikia endokrinin\u0119 sistem\u0105. Nepaisant to, yra daug veiksni\u0173, kurie tiriami siekiant suprasti, kaip mikroplastikas patenka \u012f organizm\u0105 ir per kiek laiko pasirei\u0161kia jo poveikis organizmui.<\/p>\n\n\n\n

Tyrim\u0173 su \u017emon\u0117mis buvo nedaug, tod\u0117l \u012f \u0161iuos tyrimus buvo atkreiptas d\u0117mesys, nors vieninteliai turimi tyrimai atliekami laboratoriniuose eksperimentuose, kuriuose l\u0105stel\u0117s ir \u017emogaus audiniai veikiami mikroplastiko, arba tyrimuose su gyv\u016bnais, kuriuose dalyvavo grau\u017eikai.<\/p>\n\n\n\n

Mikroplastiko \u017eala j\u016br\u0173 aplinkai<\/strong><\/h2>\n\n\n\n
\"asmuo<\/a>
Paveiksl\u0117lio \u0161altinis<\/em>: Unsplash<\/a> pagal Brian Yurasits<\/a><\/figcaption><\/figure>\n\n\n\n

Jei kalbame apie j\u016br\u0173 organizmus, akivaizd\u017eiausias b\u016bdas, kaip plastikas gali jiems pakenkti, yra tas, kad jie, nor\u0117dami i\u0161gyventi, praryja smulkias plastiko daleles, kurios n\u0117ra labai maistingos. Savo tyrime Lynch, kuri vadovauja J\u016br\u0173 \u0161iuk\u0161li\u0173 tyrim\u0173 centras<\/a> adresu Havaj\u0173 Ramiojo vandenyno universitetas<\/a> Honolulu, i\u0161tyr\u0117 plastik\u0105 ir kitas chemines med\u017eiagas j\u016bros v\u0117\u017eli\u0173, rast\u0173 negyv\u0173 papl\u016bdimiuose, \u017earnyne.<\/p>\n\n\n\n

Jos komanda atliko devyni\u0173 jaunesni\u0173 nei trij\u0173 savai\u010di\u0173 am\u017eiaus 2020 m. i\u0161siritusi\u0173 jaunikli\u0173 analiz\u0119. Nepaisant to, kad vieno jauniklio buvo tik 9 cm ilgio, jo vir\u0161kinimo trakte buvo 42 plastiko gabaliukai. Dauguma j\u0173 buvo mikroplastikas.<\/p>\n\n\n\n

Nors manoma, kad mikroplastikas n\u0117ra pagrindin\u0117 mirties prie\u017eastis, jis teb\u0117ra itin svarbi problema. Be to, daugelis \u017eymiausi\u0173 mokslinink\u0173 padar\u0117 \u012fvairi\u0173 atradim\u0173, susijusi\u0173 su mikroplastikais ir j\u016br\u0173 organizmais.<\/p>\n\n\n\n

Kaip alternatyv\u0105 rutuliams mokslininkai dabar naudoja pluo\u0161tus arba plastiko fragmentus, kurie labiau atitinka aplinkos s\u0105lygas. Daugelis bandom\u0173j\u0173 rutuliuk\u0173 yra padengti chemin\u0117mis med\u017eiagomis, pana\u0161iomis \u012f biopl\u0117vel\u0119, tod\u0117l padid\u0117ja tikimyb\u0117, kad gyv\u016bnai juos suvalgys. Tokiu b\u016bdu \u012fvyko teigiamas poslinkis pripa\u017e\u012fstant mikroplastiko kenksmingum\u0105.<\/p>\n\n\n\n

\u0160iuo metu mokslininkai mano, kad mikroplastiko ir nanoplastiko koncentracija n\u0117ra tokia didel\u0117, kad daryt\u0173 poveik\u012f \u017emoni\u0173 sveikatai. Nepaisant to, manoma, kad j\u0173 skai\u010dius did\u0117s.<\/p>\n\n\n\n

Jei pereisime prie tvaraus gyvenimo b\u016bdo ir suma\u017einsime \u012f j\u016br\u0105 i\u0161metam\u0173 toksini\u0173 atliek\u0173 kiek\u012f, vis dar galime kontroliuoti \u0161i\u0105 problem\u0105.<\/p>\n\n\n\n

I\u0161sam\u0173 straipsnio apra\u0161ym\u0105 rasite toliau nurodytame DOI.<\/p>\n\n\n\n

Lim, X. (2021). Mikroplastiko yra visur, bet ar jis \u017ealingas? https:\/\/doi.org\/10.1038\/d41586-021-01143-3<\/a><\/p>\n\n\n\n

<\/p>\n\n\n\n

Iliustracij\u0173, susijusi\u0173 su plastiku ir j\u016bra, ie\u0161kokite Mind the Graph galerijoje.<\/p>","protected":false},"excerpt":{"rendered":"

Pra\u0117jo beveik 20 met\u0173 nuo tada, kai mokslininkai atrado mikroplastiko keliam\u0105 pavoj\u0173 - dauguma tyrim\u0173 buvo skirti j\u016br\u0173 gyv\u016bnijai. Mikroplastiku vadinamas bet koks ma\u017eesnis nei 5 milimetr\u0173 ilgio plastiko fragmentas. Mikroplastiko tyrim\u0173 prad\u017eioje mokslininkai daugiausia tyrin\u0117jo mikrogranules ir pirminio plastiko granules, kuri\u0173 nebuvo galima formuoti \u012f gaminius, [...]<\/p>","protected":false},"author":18,"featured_media":13119,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[959,28],"tags":[554],"yoast_head":"\nPlastic Pollution: Are Microplastic Contaminants a Concern? - MTG<\/title>\n<meta name=\"description\" content=\"Besides the presence of microplastics in aquatic organisms, researchers estimate 15 trillion particles of plastic in the ocean.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mindthegraph.com\/blog\/lt\/plastiko-tarsa-ar-mikroplastiko-tersalai-yra-kylantis-rupestis\/\" \/>\n<meta property=\"og:locale\" content=\"lt_LT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Plastic pollution: Are microplastics contaminants an emerging concern?\" \/>\n<meta property=\"og:description\" content=\"Besides the presence of microplastics in aquatic organisms, researchers estimate 15 trillion particles of plastic in the ocean.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/mindthegraph.com\/blog\/lt\/plastiko-tarsa-ar-mikroplastiko-tersalai-yra-kylantis-rupestis\/\" \/>\n<meta property=\"og:site_name\" content=\"Mind the Graph Blog\" \/>\n<meta property=\"article:published_time\" content=\"2021-07-13T17:04:42+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-01-05T17:27:25+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2021\/07\/post-plastic-pollution-facebook.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"628\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Bruna Soldera\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Plastic pollution: Are microplastics contaminants an emerging concern?\" \/>\n<meta name=\"twitter:description\" content=\"Besides the presence of microplastics in aquatic organisms, researchers estimate 15 trillion particles of plastic in the ocean.\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/mindthegraph.com\/blog\/wp-content\/uploads\/2021\/07\/post-plastic-pollution-twitter.jpg\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Bruna Soldera\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Plastic Pollution: Are Microplastic Contaminants a Concern? 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