Izikhwama zetiye ezingenapulasitiki? Yebo, ukuzwile lokho kahle...

Umkhiqizi we-Tonchant ongu-100% wephepha lokuhlunga elingenapulasitiki lama-teabag,FUNDA OKUNINGI LAPHA

Inkomishi yakho yetiye ingase ibe nezinhlayiya ezincane zepulasitiki eziyizigidigidi eziyi-11 futhi lokhu kungenxa yendlela isikhwama setiye esakhiwe ngayo.

Ngokusho kocwaningo lwakamuva lwaseCanada eMcGill University, ukufaka isikhwama setiye sepulasitiki ekushiseni kokwenza ubhiya okungu-95°C kukhipha cishe ama-microplastic ayizigidi eziyi-11.6 – izingcezu ezincane zepulasitiki eziphakathi kwama-nanometer ayi-100 namamilimitha ayi-5 ngobukhulu – enkomishini eyodwa. Uma kuqhathaniswa nosawoti, isibonelo, okutholakale ukuthi uqukethe ipulasitiki, indebe ngayinye iqukethe isisindo sepulasitiki esiphindwe kazinkulungwane, ngama-microgram ayi-16 ngendebe ngayinye.

Ukwanda kokuba khona kwamapulasitiki amancane namakhulu amancane endaweni ezungezile kanye nochungechunge lokudla kuyakhathaza kakhulu. Nakuba abathengi abaqaphelayo bekhuthaza ukwehla kwamapulasitiki asetshenziswa kanye kuphela, abanye abakhiqizi bakha amaphakheji amasha epulasitiki ukuze athathe indawo yokusetshenziswa kwephepha lendabuko, njengezikhwama zetiye zepulasitiki. Inhloso yalolu cwaningo kwakuwukuthola ukuthi amapulasitiki etiye angakhipha yini amapulasitiki amancane kanye/noma amapulasitiki amancane ngesikhathi senqubo evamile yokucwilisa. Sibonisa ukuthi ukucwilisa isikhwama setiye esisodwa sepulasitiki ekushiseni okuphekwayo (95 °C) kukhipha cishe amapulasitiki amancane ayizigidigidi eziyi-11.6 kanye namapulasitiki amancane ayizigidigidi ezingu-3.1 enkomishini eyodwa yesiphuzo. Ukwakheka kwezinhlayiya ezikhishwe kuhambisana nama-teabag okuqala (inayiloni kanye ne-polyethylene terephthalate) kusetshenziswa i-Fourier-transform infrared spectroscopy (FTIR) kanye ne-X-ray photoelectron spectroscopy (XPS). Amazinga ezinhlayiya ze-nylon kanye ne-polyethylene terephthalate ezikhishwe ekupakisheni kwesikhwama setiye aphezulu kakhulu kunemithwalo yepulasitiki ebikwe ngaphambilini kokunye ukudla. Ukuhlolwa kokuqala kobuthi obuyingozi kwezilwane ezingenamgogodla kukhombisa ukuthi ukuchayeka ezinhlayiyeni ezikhishwe ezikhwameni zetiye kuphela kubangele imiphumela yokuziphatha nentuthuko encike kumthamo.