Imiti yica udukoko irashobora gufasha abahinzi kongera umusaruro wibiribwa, kugabanya igihombo kinini, ndetse no gukumira ikwirakwizwa ry’indwara ziterwa n’udukoko, ariko kubera ko iyi miti ishobora no kwinjira mu biribwa by’abantu, umutekano wabo ni ngombwa.Ku miti yica udukoko ikunze kwitwa glyphosate, abantu bahangayikishijwe nuburyo ibiryo bifite umutekano n'umutekano wa kimwe mubicuruzwa byacyo byitwa AMPA.Abashakashatsi bo mu kigo cy’igihugu gishinzwe ubuziranenge n’ikoranabuhanga (NIST) barimo gutegura ibikoresho bifatika kugira ngo bateze imbere igipimo nyacyo cya glyphosate na AMPA kiboneka mu biribwa bya oat.googletag.cmd.push (imikorere () {googletag.ikinamico ('div-gpt-ad-1449240174198-2 ′);});
Ikigo gishinzwe kurengera ibidukikije (EPA) gishyiraho kwihanganira urugero rw’imiti yica udukoko mu biribwa bikigaragara ko ari byiza kurya.Abakora ibiryo bapima ibicuruzwa byabo kugirango barebe ko bakurikiza amabwiriza ya EPA.Ariko, kugirango barebe ko ibipimo byabo ari ukuri, bakeneye gukoresha ibintu bifatika (RM) bifite glyphosate izwi kugirango bagereranye nibicuruzwa byabo.
Mu bicuruzwa bya oatmeal cyangwa oatmeal ikoresha imiti myinshi yica udukoko, nta bikoresho bifatika bishobora gukoreshwa mu gupima glyphosate (ingirakamaro mu bicuruzwa by’ubucuruzi Roundup).Nyamara, umubare muto wibiribwa bishingiye kuri RM birashobora gukoreshwa mugupima indi miti yica udukoko.Gutezimbere glyphosate no guhaza ibyifuzo byihutirwa byabakora, abashakashatsi ba NIST bateje imbere uburyo bwo gupima glyphosate mubicuruzwa 13 biboneka mu bucuruzi by’ibiribwa bishingiye ku bicuruzwa kugira ngo bamenye ibintu byerekana abakandida.Basanze glyphosate mu byitegererezo byose, kandi AMPA (ngufi kuri aside amine methyl fosifonique) yabonetse muri bitatu muri byo.
Mu myaka ibarirwa muri za mirongo, glyphosate yabaye imwe mu miti yica udukoko muri Amerika ndetse no ku isi.Nk’uko ubushakashatsi bwakozwe mu 2016 bubigaragaza, muri 2014 honyine, muri Amerika hakoreshejwe toni 125,384 za glyphosate.Nibyatsi, umuti wica udukoko, bikoreshwa mugusenya ibyatsi cyangwa ibihingwa byangiza ibihingwa.
Rimwe na rimwe, ingano y'ibisigisigi byica udukoko mu biryo ni bike cyane.Ku bijyanye na glyphosate, irashobora kandi gucika muri AMPA, kandi irashobora no kuguma ku mbuto, imboga n'ibinyampeke.Ingaruka zishobora kuba AMPA ku buzima bwabantu ntizisobanutse neza kandi iracyari igice cyubushakashatsi.Glyphosate nayo ikoreshwa cyane mubindi binyampeke n'ibinyampeke, nka sayiri n'ingano, ariko oati nikibazo kidasanzwe.
Umushakashatsi wa NIST, Jacolin Murray, yagize ati: “Oats irihariye nk'ibinyampeke.”Ati: “Twahisemo oati nk'ibikoresho bya mbere kubera ko abahinzi b'ibiribwa bakoresha glyphosate nk'icyuma cyangiza imyaka mbere yo gusarura.Amashu akenshi arimo glyphosate nyinshi.Fosifine. ”Kuma ibihingwa birashobora gusarura hakiri kare kandi bigahindura uburinganire bwibihingwa.Nk’uko byatangajwe n’umwanditsi umwe witwa Justine Cruz (Justine Cruz), kubera uburyo bwinshi bwo gukoresha glyphosate, ubusanzwe glyphosate usanga iri hejuru mu nzego kurusha iyindi miti yica udukoko.
Ingero 13 za oatmeal mu bushakashatsi zirimo oatmeal, ntoya ya oatmeal ifunguro rya mu gitondo, hamwe nifu ya oat biva muburyo busanzwe bwo guhinga no guhinga.
Abashakashatsi bakoresheje uburyo bunoze bwo kuvana glyphosate mu biribwa bikomeye, bifatanije nubuhanga busanzwe bwitwa chromatografiya y’amazi na mass spectrometrie, kugira ngo basesengure glyphosate na AMPA mu byitegererezo.Muburyo bwa mbere, icyitegererezo gikomeye gishonga mumazi avanze hanyuma glyphosate ikurwa mubiryo.Ibikurikira, muri chromatografiya yuzuye, glyphosate na AMPA murugero rwikuramo bitandukanijwe nibindi bice murugero.Hanyuma, mass spectrometer ipima igipimo cya misa-yishyurwa rya ion kugirango hamenyekane ibice bitandukanye murugero.
Ibisubizo byabo byerekanye ko intungamubiri za mugitondo kama (26 ng kuri garama) hamwe nifu yifu ya oat (11 ng kuri garama) bifite urugero rwo hasi rwa glyphosate.Urwego rwo hejuru rwa glyphosate (1,100 ng kuri garama) rwagaragaye mu cyitegererezo cya oatmeal isanzwe.Ibiri muri AMPA muburyo bwa oatmeal nibisanzwe hamwe na oat bishingiye kuri oat biri munsi cyane yibirimo glyphosate.
Ibiri muri glyphosate na AMPA mubinyampeke bya oatmeal na oat bishingiye munsi ya EPA kwihanganira 30 μg / g.Murray yagize ati: “Urwego rwo hejuru rwa glyphosate twapimye rwikubye inshuro 30 kurenza urugero rwateganijwe.”
Hashingiwe ku byavuye muri ubu bushakashatsi no mu biganiro bibanza n’abafatanyabikorwa bashishikajwe no gukoresha RM mu binyampeke bya oatmeal na oat, abashakashatsi basanze guteza imbere urugero ruke rwa RM (50 ng kuri garama) n’urwego rwo hejuru rwa RM bishobora kuba ingirakamaro.Imwe (500 nanogramu kuri garama).Izi RM zifite akamaro muri laboratoire zipima ubuhinzi n’ibiribwa n’abakora ibiribwa bakeneye gupima ibisigazwa byica udukoko mu bikoresho byabo kandi bakeneye ibipimo nyabyo byo kubigereranya na byo.
RM ya NIST ntabwo ikoreshwa muri Amerika gusa, ahubwo no ku isi yose.Kubwibyo, ni ngombwa ko abashakashatsi batekereza kubuza amahanga.Kurugero, i Burayi, imipaka ni microgramo 20 kuri garama.
Umushakashatsi wa NIST, Katrice Lippa yagize ati: “Abashakashatsi bacu bagomba gushyira mu gaciro ibikenewe muri laboratoire zipima ibiribwa muri Amerika no mu tundi turere kugira ngo ibikoresho bifatika bigire ingaruka ku isi.”
Abashakashatsi bashoboye kumenya abakandida batatu ba RM kuri glyphosate hamwe n’abakandida babiri ba AMPA mu ngano zishingiye kuri oat.Bashoboye kandi gukora ubushakashatsi bwibanze bwibanze, kandi ibisubizo byerekanaga ko glyphosate ihagaze neza muri oati ku bushyuhe buhoraho bwa dogere selisiyusi 40 mu gihe cy’amezi atandatu, ibyo bikaba ari ingenzi cyane mu iterambere rya RMs, bishobora kuba bishingiye kuri kimwe cyangwa byinshi y'ibicuruzwa.
Ibikurikira, abashakashatsi barateganya gusuzuma niba RM ishoboka binyuze mu bushakashatsi bwakozwe na laboratoire, hanyuma bagakora ubushakashatsi bwigihe kirekire kuri glyphosate na AMPA mubikoresho byabo.Itsinda rya NIST rizakomeza gukorana nabafatanyabikorwa kugirango RM ibashe kubona ibyo bakeneye.
Urashobora kwizeza ko abakozi bacu b'ubwanditsi bazakurikiranira hafi ibitekerezo byose byoherejwe kandi bazafata ingamba zikwiye.Igitekerezo cyawe ni ingenzi kuri twe.
Aderesi imeri yawe ikoreshwa gusa kugirango umenyeshe uwakiriye imeri.Ntabwo adresse yawe cyangwa aderesi yabakiriye bizakoreshwa kubindi bikorwa byose.Amakuru winjiye azagaragara muri imeri yawe, ariko Phys.org ntabwo izabika muburyo ubwo aribwo bwose.
Ohereza buri cyumweru na / cyangwa ivugurura rya buri munsi kuri inbox.Urashobora kwiyandikisha umwanya uwariwo wose, kandi ntituzigera dusangira amakuru yawe nabandi bantu.
Uru rubuga rukoresha kuki mu gufasha kugendagenda, gusesengura imikoreshereze ya serivisi zacu no gutanga ibikubiye mu bandi bantu.Ukoresheje urubuga rwacu, wemeza ko wasomye kandi wunvise politiki yibanga n'amabwiriza yo gukoresha.