Ubushakashatsi bwakozwe ku bwoko butanu bwibiryo byo mu nyanja bwerekanye ko buri cyitegererezo cyarimo ibipimo bya plastiki.
Abashakashatsi baguze amashu, urusenda, isukari, igikona na sardine ku isoko ryo muri Ositaraliya barabisesengura bakoresheje uburyo bushya bwatejwe imbere bushobora kumenya icyarimwe no gupima ubwoko butanu bwa plastiki.
Ubushakashatsi bwakozwe na kaminuza ya Exeter na kaminuza ya Queensland bwerekanye ko ibinyamisogwe, urusenda rwa garama, urusenda, amashu, urusenda, na sardine byari 0.04 mg, 0.07 mg, oyster 0.1 mg, igikona 0,3 mg na 2,9 mg.
Francesca Ribeiro, umwanditsi mukuru w'ikigo cya QUEX, yagize ati: “Urebye ikoreshwa rusange, abakoresha ibiribwa byo mu nyanja barashobora kurya mg 0.7 za plastiki igihe barya amashu cyangwa isukari, mu gihe kurya sardine bishobora kurya byinshi. Kugera kuri 30mg ya plastike. "Umunyeshuri wa PhD.
"Kugereranya, uburemere bwa buri ntete z'umuceri ni mg 30.
"Ibyavuye mu bushakashatsi byerekana ko ingano ya pulasitike iri hagati y’ibinyabuzima bitandukanye itandukanye cyane, kandi ko hari itandukaniro riri hagati y’abantu bo mu bwoko bumwe.
"Uhereye ku bwoko bw'ibiryo byo mu nyanja byageragejwe, sardine ifite plastike nyinshi, ibyo bikaba ari ibisubizo bitangaje."
Porofeseri Tamara Galloway, umwe mu banditsi b'ikigo cya Exeter Institute for Global Systems, yagize ati: "Ntabwo twumva neza ingaruka ziterwa no gufata plastiki ku buzima bwa muntu, ariko ubu buryo bushya buzatworohera kuvumbura."
Abashakashatsi baguze ibiribwa byo mu nyanja mbisi-bitanu byo mu gasozi k'ubururu, inkeri icumi, ingurube icumi zahinzwe, ingurube icumi zo mu gasozi na sardine icumi.
Hanyuma, basesenguye plastike eshanu zishobora kumenyekana nuburyo bushya.
Izi plastiki zose zikunze gukoreshwa mubipfunyika bya pulasitike hamwe n’imyenda yubukorikori, kandi bikunze kuboneka mu myanda yo mu nyanja: polystirene, polyethylene, polyvinyl chloride, polypropilene na polymethylmethacrylate.
Muburyo bushya, inyama zibiryo zivurwa nimiti yo gushonga plastike iri murugero. Igisubizo cyavuyeho kirasesengurwa hifashishijwe tekinike yunvikana cyane yitwa pyrolysis gas chromatography-mass spectrometry, ishobora icyarimwe kumenya ubwoko butandukanye bwa plastiki murugero.
Choride ya polyvinyl yabonetse mu ngero zose, kandi plastiki ifite ingufu nyinshi yari polyethylene.
Microplastique ni uduce duto cyane twa plastike tuzanduza ibice byinshi byisi, harimo ninyanja. Ubwoko bwose bwubuzima bwo mu nyanja buraburya, kuva muri livre nto na plankton kugeza ku nyamaswa nini.
Ubushakashatsi kugeza ubu bwerekanye ko microplastique itinjira mu ndyo yacu gusa ikomoka ku nyanja, ahubwo ininjira mu mubiri w'umuntu uva mu macupa, umunyu wo mu nyanja, byeri n'ubuki, n'umukungugu uva mu biryo.
Uburyo bushya bwo kwipimisha ni intambwe iganisha ku kumenya ingano ya plastike ifatwa nk’ibyangiza no gusuzuma ingaruka zishobora guterwa no gufata urugero rwa plastike mu biribwa.
