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Baenjiniere ba MADISON University of Wisconsin-Madison ba thehile lisebelisoa tsa mobu tse theko e tlaase

Shuohao Cai, seithuti sa bongaka sa mahlale a mobu, o beha molamu oa kutlo o nang le setikara sa sensor se sebetsang ka bongata se lumellang litekanyo ka botebo bo fapaneng mobung Univesithing ea Wisconsin-Madison Hancock Agricultural Research Station.
MADISON - Baenjiniere ba Univesithi ea Wisconsin-Madison ba thehile li-sensor tse theko e tlaase tse ka fanang ka tlhokomelo e tsoelang pele, ea nako ea sebele ea nitrate mefuteng e tloaelehileng ea mobu oa Wisconsin. Lisensara tsena tse hatisitsoeng tsa electrochemical li ka thusa lihoai ho etsa liqeto tsa taolo ea limatlafatsi tse nang le tsebo le ho hlokomela melemo ea moruo.
"Lisele tsa rona li ka fa lihoai kutloisiso e molemo ea boemo ba phepo e nepahetseng ea mobu oa bona le palo ea nitrate e fumanehang limela tsa bona, ho ba thusa ho etsa qeto e nepahetseng haholoanyane hore na ba hloka manyolo a makae," ho boletse Joseph Andrews, motlatsi oa moprofesa Univesithing ea Harvard. Boithuto bona bo ne bo etelletsoe pele ke Sekolo sa Boenjiniere ba Mechini Univesithing ea Wisconsin-Madison. "Haeba ba ka fokotsa palo ea manyolo ao ba a rekang, ho boloka litšenyehelo ho ka ba bohlokoa bakeng sa mapolasi a maholo."
Li-nitrate ke limatlafatsi tse hlokahalang bakeng sa kholo ea lijalo, empa li-nitrate tse feteletseng li ka tsoa mobung 'me tsa kena metsing a ka tlas'a lefatše. Tšilafalo ea mofuta ona e kotsi ho batho ba noang metsi a seliba a silafetseng ’me e kotsi tikolohong. Sensor e ncha ea bafuputsi e ka boela ea sebelisoa e le sesebelisoa sa ho etsa lipatlisiso tsa temo ho lekola leaching ea nitrate le ho thusa ho theha mekhoa e metle ea ho fokotsa litlamorao tsa eona tse kotsi.
Mekhoa ea hajoale ea ho lekola nitrate ea mobu ke mosebetsi o boima, o theko e boima ebile ha o fane ka lintlha tsa nako ea nnete. Ke ka lebaka leo setsebi sa lisebelisoa tsa elektronike se hatisitsoeng Andrews le sehlopha sa hae ba ileng ba ikemisetsa ho etsa tharollo e molemo, e sa tureng.
Morerong ona, bafuputsi ba ile ba sebelisa mokhoa oa khatiso oa inkjet ho etsa mochine oa potentiometric, mofuta oa mochine o mosesaane oa filimi ea electrochemical. Li-sensor tsa Potentiometric li atisa ho sebelisoa ho lekanya nitrate ka mokhoa o nepahetseng ka tharollo ea metsi. Leha ho le joalo, lisensara tsena ka kakaretso ha lia lokela ho sebelisoa tikolohong ea mobu hobane likaroloana tse kholo tsa mobu li ka ngoaea li-sensor le ho thibela litekanyo tse nepahetseng.
"Bothata bo boholo boo re neng re leka ho bo rarolla e ne e le ho fumana mokhoa oa ho etsa hore lisebelisoa tsena tsa electrochemical li sebetse hantle maemong a thata a mobu le ho lemoha ka nepo li-ion tsa nitrate," Andrews o itse.
Tharollo ea sehlopha e ne e le ho beha lera la polyvinylidene fluoride holim'a sensor. Ho ea ka Andrews, boitsebiso bona bo na le litšobotsi tse peli tsa bohlokoa. Ea pele, e na le masoba a manyenyane haholo, a ka bang boholo ba li-nanometer tse 400, tse lumellang li-ion tsa nitrate hore li fete ha li ntse li thiba likaroloana tsa mobu. Taba ea bobeli, ke hydrophilic, ke hore, e hohela metsi mme e a monya joalo ka seponche.
"Kahoo metsi leha e le afe a nang le nitrate a tla kenella ka har'a li-sensor tsa rona, e leng ntho ea bohlokoa haholo hobane mobu o boetse o tšoana le seponche 'me u tla lahleheloa ke ntoa tabeng ea mongobo o kenang ka har'a kutlo haeba u sa khone ho fumana metsi a tšoanang. Monyetla oa mobu, "Andrews o itse. "Lintho tsena tsa polyvinylidene fluoride layer li re lumella ho ntša metsi a nang le nitrate, ho a isa sebakeng sa sensor le ho bona nitrate ka nepo."
Bafuputsi ba hlalositse tsoelo-pele ea bona pampiring e hatisitsoeng ka Hlakubele 2024 koranteng ea Advanced Materials Technology.
Sehlopha se ile sa leka sensor ea bona ka mefuta e 'meli e fapaneng ea mobu e amanang le Wisconsin-mobu oa lehlabathe, o tloaelehileng likarolong tse ka leboea-bohareng tsa naha, le li-silty loams, tse tloaelehileng ka boroa-bophirimela ho Wisconsin-'me li fumane hore lisele li hlahisa liphello tse nepahetseng.
Hona joale bafuputsi ba kopanya kutlo ea bona ea nitrate ka har'a sesebelisoa sa sensor se nang le mesebetsi e mengata eo ba e bitsang "sensor sticker," eo ho eona mefuta e meraro e fapaneng ea li-sensor e kenngoeng holim'a polasetiki e tenyetsehang e sebelisa sekhomaretsi. Li-stickers li boetse li na le lisensara tsa mongobo le mocheso.
Bafuputsi ba tla hokela lithupa tse 'maloa tsa kutlo posong, ba li behe libakeng tse fapaneng, ebe ba pata poso mobung. Sena se ile sa ba lumella ho lekanya botebo bo fapaneng ba mobu.
"Ka ho lekanya nitrate, mongobo le mocheso ka botebo bo fapaneng, joale re ka lekanya mokhoa oa ho ntša nitrate le ho utloisisa hore na nitrate e tsamaea joang mobung, e leng ntho e neng e sa khonehe pele," Andrews o itse.
Lehlabuleng la 2024, bafuputsi ba rera ho beha lithupa tsa 30 mobung oa Setsi sa Lipatlisiso sa Temo sa Hancock le Setsi sa Lipatlisiso sa Temo sa Arlington Univesithing ea Wisconsin-Madison ho tsoela pele ho hlahloba sensor.

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Nako ea poso: Jul-09-2024