Kutshanje, uphononongo oluvela kwiYunivesithi yaseMcGill eCanada lubonise ukuba iibhegi zeti zikhupha amashumi eebhiliyoni zamasuntswana eplastiki kumaqondo obushushu aphezulu.Kuqikelelwa ukuba indebe nganye yeti ephuhliweyo kwingxowa nganye yeti iqulethe i-11.6 yezigidigidi ze-microplastics kunye ne-3.1 yeebhiliyoni zee-nanoplastic particles.Uphononongo lwapapashwa kwi-American Journal of Environmental Science and Technology ngoSeptemba 25.
Bakhetha ngokungenamkhethe iingxowa zeti zeplastiki ezine: iingxowa ezimbini zenayiloni kunye neengxowa ezimbini zePET.Ngokukodwa, i-PET ingasetyenziswa kuluhlu lobushushu be-55-60 ℃ ixesha elide, kwaye inokumelana nobushushu obuphezulu be-65 ℃ kunye nobushushu obuphantsi obuyi-70 ℃ ixesha elifutshane, kwaye inempembelelo encinci kwiimpawu zayo zomatshini. amaqondo obushushu aphezulu naphantsi.Lahla iti, hlamba ibhegi ngamanzi acocekileyo, kwaye emva koko ulinganise inkqubo yokwenziwa kweti, kwaye ucwilise ibhegi engenanto ngama-95 ℃ amanzi ashushu imizuzu emi-5.Kucacile ukuba amanzi esiwenza iti ngamanzi abilayo, kwaye iqondo lobushushu liphezulu kakhulu kunoluhlu lokusetyenziswa kwe-PET.
Ukuqonda kukaMcGill kubonisa ukuba inani elikhulu leeplastiki liya kukhutshwa kuqala.Ikomityi yengxowa yeti inokukhupha malunga ne-11.6 yeebhiliyoni zee-microns kunye ne-3.1 yeebhiliyoni zeenanometers zamasuntswana eplastiki!Ngaphezu koko, ingaba ezi zinto zikhutshiweyo zeplastiki ziyityhefu kwizinto eziphilayo.Ukuze kuqondwe ubutyhefu bebhayoloji, abaphandi basebenzise iintakumba zamanzi, i-invertebrate, eyimodeli yendalo esetyenziselwa ukuvavanya i-toxins kwindawo engqongileyo.Okukhona iphezulu ingxinano yengxowa yeti, kokukhona ingasebenzi kancinci intakumba yamanzi iqubha.Ewe kunjalo, intsimbi enzima + iplastiki imbi kakhulu kunamasuntswana eplastiki acocekileyo.Ekugqibeleni, intakumba yamanzi ayizange ife, kodwa yaba sisiphene.Uphononongo lugqibe kwelokuba ingaba i-tea bag plastic particles ichaphazela impilo yabantu ifuna uphando olongezelelweyo.
Ixesha lokuposa: Feb-14-2023