Ucwaningo lwezinhlobo ezinhlanu ezihlukene zokudla kwasolwandle luthole ukuthi isampula ngalinye lokuhlola lalinenani elilandelanayo lepulasitiki.
Abaphenyi bathenga ama-oysters, shrimp, squid, crabs kanye ne-sardine emakethe yase-Australia bayihlaziya besebenzisa indlela esanda kwakhiwa engakhomba kanyekanye izinhlobo ezinhlanu zepulasitiki ngasikhathi sinye.
Ucwaningo olwenziwe yi-University of Exeter kanye neYunivesithi yaseQueensland luthole ukuthi i-squid, gram shrimp, shrimp, oysters, shrimp, kanye ne-sardine kwakungu-0.04 mg, 0.07 mg, oyster 0.1 mg, crab 0.3 mg kanye 2.9 mg, ngokulandelana.
UFrancesca Ribeiro, umbhali ophambili we-QUEX Institute, uthe: “Uma kubhekwa ukusetshenziswa okujwayelekile, abathengi bezinhlanzi zasolwandle bangadla cishe u-0.7 mg wepulasitiki lapho bedla ama-oysters noma ama-squid, kuyilapho bedla izinhlayiya ezingadla kakhulu. Kufike ku-30mg wepulasitiki. "Isitshudeni se-PhD.
"Ukuqhathanisa, isisindo esimaphakathi senhlamvu ngayinye yelayisi singama-30 mg.
"Okutholakele kwethu kukhombisa ukuthi inani lepulasitiki elikhona phakathi kwezinhlobo ezahlukahlukene lehluka kakhulu, nokuthi kunokwehluka phakathi kwabantu bohlobo olulodwa.
"Kusukela ezinhlotsheni zasolwandle ezihloliwe, ama-sardine anokuqukethwe okuphezulu kakhulu kwepulasitiki, okuwumphumela omangazayo."
UProfesa Tamara Galloway, ongumbhali we-Exeter Institute for Global Systems, uthe: "Asiziqondi kahle izingozi zokufakwa kwamapulasitiki empilweni yabantu, kodwa le ndlela entsha izokwenza kube lula ngathi ukuyithola."
Abaphenyi bathenga ukudla kwasolwandle okuluhlaza-izinkalankala ezinhlanu eziluhlaza okwesibhakabhaka, ama-oysters ayishumi, ama-tiger prawn ayishumi, ama-squid asendle ayishumi kanye no-sardine abayishumi.
Bese-ke behlaziya oplastikhi abahlanu abangakhonjwa ngale ndlela entsha.
Zonke lezi zepulasitiki zivame ukusetshenziselwa ukupakisha kwepulasitiki nezindwangu zokwenziwa, futhi zivame ukutholakala kudoti wasolwandle: i-polystyrene, i-polyethylene, i-polyvinyl chloride, i-polypropylene ne-polymethylmethacrylate.
Ngendlela entsha, izicubu zokudla ziphathwa ngamakhemikhali ukuncibilikisa okukhona kwepulasitiki kusampula. Isixazululo esivelayo sihlaziywa kusetshenziswa inqubo ebucayi kakhulu ebizwa nge-pyrolysis gas chromatography-mass spectrometry, engakhomba ngasikhathi sinye izinhlobo ezahlukene zepulasitiki esampula.
I-Polyvinyl chloride itholakale kuwo wonke amasampula, kanti ipulasitiki enokugxila okuphezulu kakhulu bekuyi-polyethylene.
IMicroplastics izingcezu zepulasitiki ezincane kakhulu ezizongcolisa izingxenye eziningi zomhlaba, kubandakanya nolwandle. Zonke izinhlobo zempilo yasolwandle ziyazidla, kusuka kwizibungu ezincane kanye neplankton kuya ezincelisayo ezinkulu.
Ucwaningo kuze kube manje lukhombisile ukuthi ama-microplastics awagcini nje ekudleni kwethu kusuka ekudleni kwasolwandle, kepha futhi angena emzimbeni womuntu kusuka emanzini asemabhodleleni, usawoti wasolwandle, ubhiya noju, nothuli lokudla.
Indlela entsha yokuhlola iyisinyathelo esichaza ukuthi yimiphi iminonjana yepulasitiki ethathwa njengeyingozi nokuhlola ubungozi obungenzeka bokufaka amanani epulasitiki ekudleni.
