Gulu la ofufuza ochokera ku mayunivesite ku Scotland, Portugal ndi Germany apanga sensa yomwe ingathandize kuzindikira kukhalapo kwa mankhwala ophera tizilombo m'magulu otsika kwambiri m'madzi.
Ntchito yawo, yomwe yafotokozedwa mu pepala latsopano lofalitsidwa lero mu nyuzipepala ya Polymer Materials and Engineering, ikhoza kupanga kuyang'anira madzi mofulumira, kosavuta, komanso kutsika mtengo.
Mankhwala ophera tizilombo amagwiritsidwa ntchito kwambiri paulimi padziko lonse lapansi pofuna kupewa kuonongeka kwa mbewu.Komabe, kusamala kuyenera kuchitidwa, chifukwa ngakhale kudontha kwakung'ono m'nthaka, pansi pa nthaka kapena madzi a m'nyanja kungawononge thanzi la anthu, nyama ndi chilengedwe.
Kuyang'anira chilengedwe nthawi zonse ndikofunikira kuti muchepetse kuipitsidwa ndi madzi kuti achitepo kanthu mwachangu akapezeka mankhwala ophera tizilombo m'madzi.Pakadali pano, kuyesa kwa mankhwala ophera tizilombo kumachitika nthawi zambiri m'ma labotale pogwiritsa ntchito njira monga chromatography ndi mass spectrometry.
Ngakhale kuti mayeserowa amapereka zotsatira zodalirika komanso zolondola, akhoza kutenga nthawi komanso okwera mtengo kuchita.Njira imodzi yodalirika ndi chida chowunikira mankhwala chotchedwa Raman Scattering (SERS) yowonjezereka.
Kuwala kukagunda molekyu, kumamwazikana mosiyanasiyana malinga ndi kapangidwe ka molekyuyo.SERS imalola asayansi kuzindikira ndi kuzindikira kuchuluka kwa mamolekyu otsalira muyeso yoyeserera yomwe imatsatiridwa pazitsulo posanthula "zala" zapadera za kuwala komwe kumamwazikana ndi mamolekyu.
Izi zitha kukulitsidwa posintha chitsulo pamwamba kuti chizitha kutsatsa mamolekyu, potero kumapangitsa mphamvu ya sensa kuti izindikire kuchuluka kwa mamolekyu mu zitsanzo.
Gulu lofufuzalo lidayamba kupanga njira yoyesera yatsopano, yosunthika yomwe imatha kutsatsa mamolekyu kukhala zitsanzo zamadzi pogwiritsa ntchito zida zosindikizidwa za 3D ndikupereka zotsatira zolondola zoyambira m'munda.
Kuti achite izi, adaphunzira mitundu ingapo yamitundu yosiyanasiyana yama cell opangidwa kuchokera ku chisakanizo cha polypropylene ndi ma nanotube okhala ndi mipanda yambiri.Nyumbazi zinapangidwa pogwiritsa ntchito ulusi wosungunuka, mtundu wamba wa kusindikiza kwa 3D.
Pogwiritsa ntchito njira zama chemistry zonyowa, ma nanoparticles a siliva ndi golide amayikidwa pamwamba pa cell kuti athe kufalikira kwa Raman.
Adayesa kuthekera kwamitundu ingapo yamitundu yosindikizidwa ya 3D kuti atenge ndi kutsatsa mamolekyu amtundu wamtundu wa methylene buluu, kenako adawasanthula pogwiritsa ntchito chowonera cha Raman.
Zida zomwe zidachita bwino pamayesero oyambilira - mapangidwe a lattice (mapangidwe amtundu wanthawi zonse) omangidwa ku nanoparticles zasiliva - adawonjezedwa pamzere woyeserera.Tizilombo tating'ono ting'onoting'ono (Siram ndi paraquat) zidawonjezeredwa kumadzi am'nyanja ndi zitsanzo zamadzi atsopano ndikuyika pamizere yoyesera ya kusanthula kwa SERS.
Madzi amatengedwa kuchokera pakamwa pa mtsinje ku Aveiro, Portugal, komanso pampopi m'dera lomwelo, omwe amayesedwa nthawi zonse kuti ayang'ane bwino kuipitsidwa kwa madzi.
Ofufuzawo adapeza kuti zingwezo zidatha kuzindikira mamolekyu awiri ophera tizilombo omwe ali otsika kwambiri ngati 1 micromole, yomwe ndi yofanana ndi molekyu imodzi ya mankhwala ophera tizilombo pa mamolekyu amadzi miliyoni.
Pulofesa Shanmugam Kumar, wochokera ku James Watt School of Engineering ku yunivesite ya Glasgow, ndi mmodzi mwa olemba mapepala.Ntchitoyi ikupitilira kafukufuku wake wogwiritsa ntchito ukadaulo wosindikiza wa 3D kuti apange ma lattice opangidwa ndi nanoengineered okhala ndi zinthu zapadera.
"Zotsatira za phunziro loyambirirali ndi zolimbikitsa kwambiri ndipo zikuwonetsa kuti zinthu zotsika mtengozi zitha kugwiritsidwa ntchito kupanga masensa a SERS kuti azindikire mankhwala ophera tizilombo, ngakhale atakhala otsika kwambiri."
Dr. Sara Fateixa wochokera ku CICECO Aveiro Materials Institute ku yunivesite ya Aveiro, wolemba nawo pepala, wapanga ma nanoparticles a plasma omwe amathandiza teknoloji ya SERS.Ngakhale kuti pepalali likuyang'ana momwe dongosololi limagwirira ntchito kuti lizindikire mitundu yeniyeni ya zowonongeka zamadzi, teknoloji ingagwiritsidwe ntchito mosavuta kuti iwonetsere kukhalapo kwa madzi.
Nthawi yotumiza: Jan-24-2024