Munguva pfupi yapfuura, ongororo kubva kuYunivhesiti yeMcGill kuCanada yakaratidza kuti mabhegi etii anoburitsa makumi emabhiriyoni ezvimedu zvepurasitiki pakupisa kwakanyanya.Inofungidzirwa kuti kapu yega yega yetii yakabikwa kubva kune yega yega bhegi ine 11.6 bhiriyoni microplastics uye 3.1 bhiriyoni nanoplastic particles.Chidzidzo ichi chakaburitswa muAmerican Journal of Environmental Science uye Technology munaGunyana 25.
Vakasarudza zvisina tsarukano mabhegi mana epurasitiki eti: mabhegi maviri enylon uye maviri maPET mabhegi.Kunyanya, PET inogona kushandiswa mutembiricha ye55-60 ℃ kwenguva yakareba, uye inogona kumira tembiricha yakakwira ye65 ℃ uye yakaderera tembiricha ye - 70 ℃ kwenguva pfupi, uye ine zvishoma zvinokanganisa pamichina yayo. tembiricha dzakakwirira uye dzakaderera.Rasa tii, geza bhegi nemvura yakacheneswa, wozotevedzera maitiro ekubikisa tii, wonyura bhegi risina chinhu ne95 ℃ mvura inopisa kwemaminetsi mashanu.Zviripachena kuti mvura yatinobika tii imvura iri kufashaira, uye tembiricha yakakwira zvakanyanya kudarika kushandiswa kwePET.
Kuziva kwaMcGill kunoratidza kuti nhamba huru yezvikamu zvepurasitiki zvichatanga kuburitswa.Kapu yebhegi retii inogona kuburitsa mabhiriyoni gumi nerimwe nemazana matanhatu emamicrons uye 3.1 bhiriyoni nanometers epurasitiki particles!Uyezve, kunyangwe aya mapurasitiki akaburitswa ane chepfu kune zvipenyu.Kuti tinzwisise huturu hwebhayoloji, vaongorori vakashandisa nhata dzemvura, invertebrate, inova chipenyu chemuenzaniso chinoshandiswa kuongorora chepfu munharaunda.Iyo yakanyanya kuwanda kwebhegi retii, ndiko kushomeka kwenhata dzemvura kushambira.Ehe, inorema simbi + yepurasitiki yakaipisisa kupfuura yakachena mapurasitiki particles.Pakupedzisira, nhata yemvura haina kufa, asi yakanga yaremara.Chidzidzo ichi chakagumisa kuti kana tei bhegi repurasitiki zvimedu zvinokanganisa hutano hwevanhu zvinoda kumwe kutsvagisa.
Nguva yekutumira: Feb-14-2023