Mabhodhoro epurasitiki akapfava anonyudza mazana emakemikari mumvura yekunwa

Ongororo ichangoburwa yakasimudza maalar pamusoro pezvinogona kuitika pahutano hwemvura yekunwa kubva mumabhodhoro epurasitiki, uye masayendisiti ari kunetsekana kuti makemikari ari kupinda mumvura anogona kuve nemhedzisiro isingazivikanwe pahutano hwevanhu.Chidzidzo chitsva chinoongorora chiitiko chemabhodhoro anogona kushandiswa zvakare, achiburitsa mazana emakemikari. vanoregedzera mumvura uye nei kuvapfuura nemudhishi kungava pfungwa yakaipa.
Ongororo iyi, yakaitwa nevaongorori vepaUniversity yeCopenhagen, yakanangana nemhando dzemabhodhoro akapfava anoshandiswa mumitambo.Kunyange zvazvo izvi zvichinyanya kuwanda pasi rose, vanyori vanoti pane mikaha mikuru mukunzwisisa kwedu kuti makemikari ari mumapurasitiki aya kutamira mumvura yekunwa yavakabata, saka vakaita ongororo yekuzadza mamwe maburi.
Mabhodhoro ese matsva uye aishandiswa zvakanyanya akazadzwa nemvura yepombi yenguva dzose uye akasiiwa kuti agare kwemaawa makumi maviri nemana asati apfuura uye mushure mekufamba kuburikidza nedhishi redhishi.Kushandisa mass spectrometry uye liquid chromatography, masayendisiti akaongorora zvinhu zviri mumvura zvisati zvaitika uye shure kwekugezwa kwemichina uye mushure mekugeza mashanu nemvura yepombi.
"Yaiva sipo yaiva pamusoro ndiyo yaibudisa zvakanyanya mushure mekugeza muchina," akadaro munyori anotungamira Selina Tisler. "Mazhinji emakemikari emubhodhoro remvura pachawo achiripo mushure mekugezwa nemuchina uye kuwedzera kusukurudzwa. Zvinhu zvine muchetura zvatakawana zvakanyatsogadzirwa mushure mekunge bhodhoro remvura raiswa mudhishi - pamwe nekuti kugeza kunopedza purasitiki, izvo zvinowedzera kudonha. "
Masayendisiti akawana zvinhu zvinopfuura 400 zvakasiyana mumvura kubva mumidziyo yepurasitiki, uye zvinhu zvinopfuura 3 500 kubva musipo yokugezesa ndiro. Zvizhinji zveizvi zvinhu zvisingazivikanwi izvo vatsvakurudzi vasati vaziva, uye kunyange pane izvo zvinogona kuzivikanwa, inokwana 70 muzana ye huturu hwavo hahuzivikanwi.
"Takashamiswa nehuwandu hwemakemikari akawanikwa mumvura mushure memaawa makumi maviri nemana mubhodhoro," akadaro munyori wekudzidza Jan H. Christensen. "Kune mazana ezvinhu zviri mumvura - kusanganisira zvinhu zvisati zvambowanikwa mupurasitiki kare, uye zvingangove Zvinhu zvinokuvadza hutano. Mushure mekutenderera kwedhishi, kune zviuru zvezvinhu. ”
Zvinhu zvakawanikwa nemasayendisiti zvakaedza zvaisanganisira mafotoinitiators, mamorekuru anozivikanwa kuti ane chepfu pazvipenyu, angangoita carcinogens uye endocrine disruptors.Vakawanawo mapurasitiki anopfavisa, antioxidants uye mold release agents anoshandiswa mukugadzirwa kwepurasitiki, pamwe nediethyltoluidine (DEET), inonyanya kushanda mumishonga inodzinga umhutu.
Masayendisiti anotenda kuti zvishoma chete zvezvinhu zvakaonekwa zvakaiswa nemaune kumabhodhoro panguva yekugadzira.Mazhinji acho anogona kunge akaumbwa panguva yekushandiswa kana kugadzirwa, apo chimwe chinhu chingave chakashandurwa kuita chimwe, senge chinyoro chepurasitiki chavanofungidzira kuti chingave. inoshandurwa kuita DEET kana yadzikisira.
"Asi kunyangwe nezvinhu zvinozivikanwa izvo vagadziri vanowedzera nemaune, chikamu chidiki chechepfu chakaongororwa," Tissler akadaro." Saka, semutengi, hauzivi kana paine mumwe munhu achakanganisa hutano hwako. .”
Chidzidzo chacho chinowedzera kuboka rinokura rekutsvakurudza pamusoro pekuti vanhu vanodya sei makemikari akawanda kuburikidza nekubatana kwavo nezvigadzirwa zvepurasitiki, uye zvakare kuratidza zvakawanda zvisingazivikanwe mumunda.
“Tine hanya zvikuru nokuderera kwemishonga inouraya zvipembenene mumvura yokunwa,” Christensen akadaro.” Asi patinodira mvura mumudziyo wokunwa, isu pachedu hatizenguriri kuwedzera mazana kana kuti zviuru zvezvinhu mumvura. Kunyangwe isu hatisati tataura kana zvinhu zviri mubhodhoro rinoshandiswazve zvingakanganisa hutano hwedu, asi ndichashandisa girazi kana bhodhoro resimbi rakanaka mune ramangwana.