Izikhwama zetiye zepulasitiki zamahhala?Yebo, ukuzwile kahle...

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Inkomishi yakho yetiye ingase ibe nezinhlayiya ze-microplastic eziyizigidi eziyizinkulungwane ezingu-11 futhi lokhu kungenxa yendlela isikhwama setiye esakhiwe ngayo.

Ngokocwaningo lwakamuva lwaseCanada eNyuvesi yaseMcGill, ukucwilisa isikhwama setiye sepulasitiki endaweni yokushisa engu-95°C kukhipha cishe ama-microplastic ayizigidi eziyizinkulungwane ezingu-11.6 - izingcezu zepulasitiki ezincane eziphakathi kwama-nanometer angu-100 namamilimitha angu-5 ngosayizi - zibe yinkomishi eyodwa.Ngokwesibonelo, uma kuqhathaniswa nosawoti okuye kwatholakala ukuthi uqukethe ipulasitiki, inkomishi ngayinye iqukethe ipulasitiki enkulu ngokuphindwe izikhathi eziyizinkulungwane, engama-microgram angu-16 indebe ngayinye.

Ukuba khona okwandayo kwamapulasitiki amancane nanosayizi we-nano endaweni kanye nochungechunge lokudla kuyakhathaza.Nakuba abathengi abanengqondo bekhuthaza ukuncishiswa kwamapulasitiki asetshenziswa kanye, abanye abakhiqizi bakha amaphakeji amasha epulasitiki ukuze athathele indawo ukusetshenziswa kwephepha elivamile, njengezikhwama zetiye zepulasitiki.Inhloso yalolu cwaningo bekuwukuthola ukuthi ingabe izikhwama zetiye zepulasitiki zingakhipha ama-microplastic kanye/noma ama-nanoplastics phakathi nenqubo evamile yokukhuphuka.Sibonisa ukuthi ukucwilisa isikhwama setiye sepulasitiki esisodwa ezingeni lokushisa lokuphisa (95 °C) kukhipha cishe ama-microplastic ayizigidi eziyizinkulungwane ezingu-11.6 kanye nama-nanoplastic ayizigidi eziyizinkulungwane ezingu-3.1 enkomishini eyodwa yesiphuzo.Ukwakheka kwezinhlayiya ezikhishiwe kumataniswa nezikhwama zetiye zokuqala (inayiloni ne-polyethylene terephthalate) kusetshenziswa i-Fourier-transform infrared spectroscopy (FTIR) kanye ne-X-ray photoelectron spectroscopy (XPS).Amazinga ezinhlayiya zenayiloni ne-polyethylene terephthalate ezikhishwe emaphaketheni e-tebag zingama-oda amaningana obukhulu obuphezulu kunemithwalo yepulasitiki ebikwe ngaphambilini kokunye ukudla.Ukuhlolwa kokuqala kobuthi bezilwane ezingenamgogodla kubonisa ukuthi ukuchayeka ezinhlayiyeni ezikhishwe kuphela ezikhwameni zetiye kubangele imiphumela encike kumthamo wokuziphatha nentuthuko.