Raman spectroscopy saib hauv Charles Darwin lub hub
Cov kws tshawb fawb UK tau ua tiav kev tshuaj xyuas cov khoom khaws cia hauv qee qhov ntawm Charles Darwin lub hub keeb kwm yam tsis tau qhib lub thawv.
Ib pab neeg los ntawm lub neej-cov khoom siv txuj ci muag khoom Agilent Technologies thiab UK's Science thiab Technology Facilities Council Central Laser Facility tau ua haujlwm rau qhov kev sib txawv ntawm Raman spectroscopy (SORS) mus kom ze.
Sara Mosca los ntawm Central Laser Facility tau hais tias "Txog tam sim no nkag siab txog dab tsi khaws cia cov kua dej hauv txhua lub hub txhais tau tias qhib lawv, uas ua rau muaj kev pheej hmoo ntawm evaporation, kis kab mob thiab nthuav tawm cov qauv mus rau ib puag ncig kev puas tsuaj," Sara Mosca los ntawm Central Laser Facility tau hais. "Ib txoj hauv kev SORS tuaj yeem saib xyuas thiab saib xyuas cov qauv tsis muaj nuj nqis no yam tsis muaj kev cuam tshuam rau lawv txoj kev ncaj ncees."
SORS, thawj zaug tsim tawm ntawm STFC's Rutherford Appleton Laboratory hauv 2006, yog tsim los tawm tsam Raman qhov txwv tsis pub muaj peev xwm nkag mus rau sab nraud, thiab sau cov ntaub ntawv ntau ntxiv ntawm cov qauv ntawm cov subsurface muaj pes tsawg leeg.
Agilent tau txais SORS thiab lwm yam thev naus laus zis Raman los ntawm STFC hauv 2017, ua ib feem ntawm nws txoj kev siv zog los nthuav cov ntawv thov rau Raman spectroscopy feem ntau.
Tsis zoo li cov qauv Raman rov qab- kev teeb tsa tawg, SORS siv lub cev offset nruab nrab ntawm thaj tsam ntawm cov qauv zoo siab los ntawm lub laser thiab thaj av uas lub tshuab ntes khaws cov ntaub ntawv, raws li Agilent cov ntaub ntawv khoom.
Thaum lub sij hawm ncaj qha Raman nrhiav tsis tau lub cev offset no yields ib tug spectrum nplua nuj nyob rau hauv cov ntaub ntawv saum toj kawg nkaus txheej, ib tug offset geometry sau lub detectable Raman teeb liab stimulated nyob rau hauv ze li ntawm cov cheeb tsam, feem ntau los ntawm hauv qab cov qauv nto. Qhov tshwm sim yog ib qho spectrum muab los ntawm subsurface molecules.
"Kev soj ntsuam xaiv tau ua tiav los ntawm kev tswj hwm qhov offset ntawm thaj tsam ntawm kev tshawb pom thiab thaj tsam ntawm kev zoo siab," sau tseg Agilent. "Qhov loj dua qhov offset, qhov deb ntawm qhov chaw ntawm qhov chaw nug yog."
Raman spectroscopy rau kev txuag thiab tswj kev sau
Ntev -lub sij hawm pov tseg ntawm cov khoom pov tseg nyob ntawm cov tshuaj ruaj khov ntawm cov kua dej khaws cia uas lawv khaws cia. Cov dej sib xyaw ua ke ntawm cov kua dej no muaj keeb kwm sib txawv dav, yog li kev txheeb xyuas thiab saib xyuas lawv yog qhov tseem ceeb rau kev npaj txuag cov qauv.
Hauv ib lub tsev khaws puav pheej lossis cov ntsiab lus khaws cia, SORS cov txheej txheem muab txoj hauv kev los tshuaj xyuas cov ntaub ntawv thaum txo cov fluorescence thiab Raman teeb liab cuam tshuam los ntawm lub thawv nws tus kheej. Kev piav qhia hauv ACS Omega, txoj kev tshawb fawb tshiab yog thawj zaughauv qhovchemical characterization ntawm cov dej keeb kwm siv SORS nyob rau hauv ib lub tsev cia puav pheej.
Ib txheej ntawm 46 cov qauv keeb kwm hauv London's Natural History Museum, suav nrog qee qhov sau los ntawm Charles Darwin thiab khaws cia hauv ntau qhov sib xyaw ntawm ethanol, methanol thiab formaldehyde, tau kuaj xyuas siv Agilent's Resolve tes- tuav SORS. Cov ntaub ntawv spectral tau sau tseg tom qab ntawd muab piv nrog ntau yam kev daws teeb meem calibration, thiab tshawb xyuas tawm tsam Tsev khaws puav pheej cov ntaub ntawv khaws cia rau txhua lub thawv.
"Tus txheej txheem raug txheeb xyuas cov kua dej khaws cia hauv 78.5 feem pua ntawm cov neeg mob thiab pom ib feem kev pom zoo hauv lwm 15 feem pua, feem ntau nrog cov kev pom zoo sib xws lossis tshuaj lom neeg cov kev daws teeb meem," sau tseg qhov project hauv nws daim ntawv.
"Tsuas yog 3 tus qauv (6.5 feem pua) tsis raug cais lossis tsis raug cais tawm. Tsis tas li ntawd, txoj hauv kev tau tso cai rau qhov sib txawv ntawm ntau hom iav thiab/los yog cov thawv yas, muab kev nkag siab zoo rau cov kua dej- kev sib cuam tshuam ntawm cov thawv ntim khoom thiab cov ntaub ntawv keeb kwm khaws cia."
Qhov no txhais tau hais tias SORS yuav tsis yog rov qab txheeb xyuas cov tshuaj keeb kwm yav dhau los tab sis kuj tseem pab cov neeg saib xyuas saib xyuas cov tshuaj hloov pauv uas tau tshwm sim dhau sijhawm, pab lawv txoj kev khaws cia ntau dua.
Wren Montgomery los ntawm Natural History Museum tau hais tias "Qhov haujlwm no yog cov kauj ruam tom ntej hauv kev ua kom pom lub Tsev khaws puav pheej kev cog lus los hloov pauv txoj kev kawm ntawm keeb kwm ntuj tsim," said Wren Montgomery los ntawm Natural History Museum. "Kev tshuaj xyuas cov xwm txheej khaws cia ntawm cov khoom muaj txiaj ntsig, thiab nkag siab txog cov kua dej uas lawv khaws cia, tuaj yeem cuam tshuam loj rau peb li cas rau kev sau thiab khaws cia rau yav tom ntej kev tshawb fawb rau xyoo tom ntej."
