Lub drone no nqa ib lub chaw kuaj me me uas tsim los ntsuas cov nitrate concentration hauv nyuaj - mus rau - mus txog cov dej. Credit: Nathan Jared
Yuav ua li cas yog tias, es tsis txhob coj cov dej los yog av coj mus kuaj, koj tuaj yeem nqa lub chaw kuaj mus rau tus qauv? Qhov ntawd yog dab tsi pab neeg tshawb fawb qhia hauvACS Sensorstau ua nrog ib qho nitrate tshiab - saib xyuas "lab- ntawm -a-drone" system. Lub drone tso cai rau yooj yim, tiag tiag - sijhawm piv txwv dej thiab tshuaj xyuas hauv qhov nyuaj - mus rau - mus txog thaj chaw xws li cov kwj deg los yog swampy lowlands.
Sau npe yuav mus rau peb tsab ntawv xov xwm rau qhov tseeb sci-tech xov xwm tshiab.
Cov thev naus laus zis tuaj yeem pab cov neeg ua liaj ua teb ua kom zoo dua lawv cov chiv siv thiab tiv thaiv kev ua pa phem los ntawm cov dej nitrate ntau dhau.
Vim li cas kev saib xyuas nitrate tseem ceeb
Nitrogen- muaj cov chiv yog ib qho tseem ceeb ntawm kev ua liaj ua teb niaj hnub no, tab sis feem ntau ntawm nws tau nqa tawm ntawm teb los ntawm cov kav dej.
Ib feem zoo ntawm cov khoom noj uas tsis muaj nitrogen no tau hloov mus rau hauv nitrate, uas tuaj yeem ua rau algal blooms thiab qis -oxygen "qhov chaw tuag" hauv cov dej los yog dej paug. Txawm li cas los xij, kev saib xyuas cov tshuaj nitrate tsis yog ib qho yooj yim vim tias feem ntau ntawm cov dej ua liaj ua teb yog nyob rau hauv thaj chaw deb teb lossis hauv cov av nkos, thiab cov qauv yuav tsum raug xa mus rau chav kuaj ua haujlwm. Yog li, cov kws tshawb fawb tab tom tsim txoj hauv kev los ua qhov no nrog cov chaw taws teeb - tswj cov khoom siv.
Yuav ua li cas lub lab - ntawm - ib tug - drone ua haujlwm
Jonathan Claussen thiab cov npoj yaig xav ua ib lub chaw sim zoo li no - ntawm - - drone rau kev soj ntsuam cov khoom noj muaj kuab paug uas tsis tshua kim thiab ua tau zoo dua li cov kev xaiv uas twb muaj lawm.
Cov kws tshawb fawb tau tsim lub twj tso kua mis kev cai, qis -cov nqi hluav taws xob hluav taws xob nitrate sensors, thiab cov cuab yeej potentiometric kom ntsuas cov nitrate concentrations sai thiab yooj yim. Tom qab ntawd lawv tau nruab cov cuab yeej siv rau ntawm lub lag luam muaj drone. Lub raj ntev hauv qab lub drone rub dej mus rau hauv lub mini-lab, qhov twg nws tau txheeb xyuas nruab nrab - huab cua nyob rau hauv li ntawm xya feeb.
Lub drone tau khaws tag nrho cov txiaj ntsig mus rau hauv daim npav nco onboard rau tom qab nyeem ntawv thiab tshuaj xyuas, thiab nws muaj peev xwm ua tau ntau yam qauv ua ntej tsaws.
Kev ua tau zoo thiab kev siv yav tom ntej
Hauv kev ntsuam xyuas, cov kws tshawb fawb 'sensor system tau kuaj pom nitrate concentrations mus rau 2.5 qhov chaw hauv ib lab (ppm) thiab yog 95% raws li qhov tseeb raws li qhov chaw kuaj pom zoo-raws li electrochemical nitrate detection system.
Hauv qhov dej ntws tawm ntawm qhov chaw ua liaj ua teb hauv Iowa, lub chaw kuaj mob - ntawm -a-drone pom qhov nruab nrab nitrate concentrations ntawm 5.39 ppm, uas zoo ib yam nrog cov kev ntsuas yav dhau los hauv cheeb tsam thiab qis dua 10-ppm qib siab tshaj plaws rau cov dej haus tau teeb tsa los ntawm US Environmental Protection Agency.
Pab neeg no piav qhia tias nws cov txheej txheem tshiab ua rau kev saib xyuas cov pa phem nitrate yooj yim dua li ua ntej thiab nthuav qhia lub hauv paus rau kev sim yav tom ntej - ntawm -a- cov ntawv thov drone hauv kev ua liaj ua teb, xws li tshuaj xyuas cov kab mob lossis tshuaj tua kab hauv cov dej.
Cov kws sau ntawv tau ua ntaub ntawv US patent ntsig txog txoj haujlwm no.
Xav paub ntau ntxiv:Lab-on-a-Drone: Tiag-Lub Sijhawm Electrochemical Sensing of Nitrate hauv Agricultural Watersheds,ACS Sensors(2025). DOI: 10.1021/acssensors.5c02620
Muab los ntawm American Chemical Society
