Sehlopha sa bafuputsi ba tsoang liunivesithing tsa Scotland, Portugal le Jeremane se thehile sensor e ka thusang ho lemoha boteng ba chefo e bolaeang likokoanyana maemong a tlaase haholo lisampoleng tsa metsi.
Mosebetsi oa bona, o hlalositsoeng pampiring e ncha e hatisitsoeng kajeno koranteng ea Polymer Materials and Engineering, e ka etsa hore ho hlahloba metsi ka potlako, ho be bonolo, hape ho theko e tlaase.
Likokoana-hloko li sebelisoa haholo temong lefatšeng ka bophara ho thibela tahlehelo ea lijalo.Leha ho le joalo, tlhokomeliso e tlameha ho sebelisoa, kaha esita le marotholi a manyenyane mobung, metsing a ka tlas'a lefatše kapa a leoatle a ka baka kotsi bophelong ba batho, liphoofolo le tikoloho.
Tlhokomelo ea kamehla ea tikoloho e bohlokoa ho fokotsa tšilafalo ea metsi e le hore ho ka nkoa khato ka potlako ha chefo e bolaeang likokoanyana e fumanoa lisampong tsa metsi.Hajoale, tlhahlobo ea chefo e bolaeang likokoanyana hangata e etsoa tlasa maemo a laboratori ho sebelisoa mekhoa e kang chromatography le mass spectrometry.
Leha liteko tsena li fana ka liphetho tse tšepahalang le tse nepahetseng, li ka nka nako le ho bitsa chelete e ngata ho li etsa.Mokhoa o mong o tšepisang ke sesebelisoa sa ho hlahloba lik'hemik'hale se bitsoang surface-enhanced Raman Scattering (SERS).
Ha leseli le otla molek'hule, le hasana ka maqhubu a sa tšoaneng ho itšetlehile ka sebōpeho sa molek'hule.SERS e lumella bo-ramahlale ho bona le ho tseba palo ea limolek'hule tse setseng sampoleng ea tlhahlobo e kentsoeng holim'a tšepe ka ho sekaseka "menoana" e ikhethang ea leseli le hasaneng ke limolek'hule.
Phello ena e ka ntlafatsoa ka ho fetola bokaholimo ba tšepe e le hore e khone ho bapatsa limolek'hule, ka ho etsa joalo e ntlafatse bokhoni ba sensor ea ho bona likarolo tse tlase tsa limolek'hule sampuling.
Sehlopha sa lipatlisiso se ikemiselitse ho theha mokhoa o mocha, o nkehang habonolo oa tlhahlobo o ka khonang ho kenya limolek'hule ka har'a lisampole tsa metsi ho sebelisa lisebelisoa tse hatisitsoeng tsa 3D le ho fana ka liphetho tse nepahetseng tsa pele tšimong.
Ho etsa joalo, ba ile ba ithuta mefuta e mengata e fapaneng ea meaho ea lisele e entsoeng ka motsoako oa polypropylene le li-nanotube tsa carbon e nang le marako a mangata.Mehaho e entsoe ka likhoele tse entsoeng ka ho qhibilihisoa, mofuta o tloaelehileng oa khatiso ea 3D.
Ho sebelisoa mekhoa e tloaelehileng ea k'hemistri ea metsi, li-nanoparticles tsa silevera le khauta li kenngoa ka holim'a sebopeho sa sele ho nolofalletsa ts'ebetso ea ho hasana ea Raman e ntlafalitsoeng.
Ba ile ba leka bokhoni ba lisebelisoa tse fapaneng tsa 3D tse hatisitsoeng tsa lisele ho monya le ho bapatsa limolek'hule tsa dae ea methylene blue, ebe ba li hlahlobisisa ba sebelisa sebono sa Raman se nkehang habobebe.
Lisebelisoa tse entseng hantle ka ho fetisisa litekong tsa pele - meralo ea li-lattice (mehaho ea cellular ea nako le nako) e tlameletsoeng ho li-nanoparticles tsa silevera - e ile ea kenngoa moqomong oa teko.Likokoana-hloko tse nyenyane tsa 'nete (Siram le paraquat) li ile tsa kenngoa metsing a leoatle le lisampole tsa metsi a hloekileng 'me tsa behoa lithapong tsa tlhahlobo bakeng sa tlhahlobo ea SERS.
Metsi a nkoa molomong oa noka ea Aveiro, Portugal, le lipompong sebakeng se le seng, tse lekoang khafetsa ho lekola tšilafalo ea metsi ka nepo.
Bafuputsi ba fumane hore likhoele li khonne ho bona limolek'hule tse peli tsa chefo e bolaeang likokoanyana maemong a tlase joalo ka 1 micromole, e lekanang le molek'hule e le 'ngoe ea chefo e bolaeang likokoanyana ho limolek'hule tsa metsi tse milione.
Moprofesa Shanmugam Kumar, oa Sekolo sa Boenjiniere sa James Watt Univesithing ea Glasgow, ke e mong oa bangoli ba pampiri.Mosebetsi ona o theha lipatlisiso tsa hae mabapi le ts'ebeliso ea theknoloji ea khatiso ea 3D ho theha li-lattice tsa sebopeho sa nanoengineered tse nang le thepa e ikhethang.
"Liphetho tsa thuto ena ea pele li khothatsa haholo 'me li bontša hore thepa ena e theko e tlaase e ka sebelisoa ho hlahisa li-sensor bakeng sa SERS ho lemoha chefo e bolaeang likokoanyana, esita le maemong a tlaase haholo."
Dr. Sara Fateixa oa CICECO Aveiro Materials Institute Univesithing ea Aveiro, sengoli-'moho le pampiri, o hlahisitse li-nanoparticles tsa plasma tse tšehetsang theknoloji ea SERS.Le hoja pampiri ena e hlahloba bokhoni ba tsamaiso ea ho lemoha mefuta e itseng ea litšila tsa metsi, theknoloji e ka sebelisoa habonolo ho lekola boteng ba litšila tsa metsi.
Nako ea poso: Jan-24-2024