Kev tshawb pom ntawm cov kua hauv lub cev thaum tshawb nrhiav kev tshawb fawb tuaj yeem muab suav tsis txheeb rau kev ua txhaum cai. Cov qaub ncaug feem ntau tawm tsam thaum qee qhov kev tshawb nrhiav, tshwj xeeb tshaj yog nyob rau hauv kev tshawb nrhiav kev ua phem rau kev sib deev thiab lwm yam kev ua phem phem. Cov kev nplua nuj ntawm cov ntaub ntawv tshuaj nyob rau hauv lub complex matrix tuaj yeem muab cov lus qhia txog leej twg tuaj yeem tso cov tshuaj tom qab. Ib qho piv txwv ntawm qhov no yog seb tus neeg pub dawb yog tus neeg haus luam yeeb.
Ib pab neeg tshawb fawb ntawm University of Albany tau tshaj tawm xov xwm ntau zaus hauv xyoo tas los no nrog lawv cov cuab yeej ceev ceev, ntawm qhov chaw rau kev tshuaj xyuas lub cev. Siv Raman spectroscopy, pab pawg tau ua tiav txoj hauv kev los txheeb xyuas cov kua dej hauv lub cev, kwv yees lub hnub nyoog ntawm lub cev, thiab txiav txim siab tus yam ntxwv ntawm tus neeg pub dawb, xws li haiv neeg thiab poj niam txiv neej. Nyob rau hauv daim ntawv tshiab kawg los ntawm Igor Lednev thiab nws cov npoj yaig, luam tawm hauv Phau Ntawv Xov Xwm ntawm Biophotonics, Raman spectroscopy tau pom tias muaj kev sib txawv ntawm cov neeg haus luam yeeb thiab cov neeg tsis haus luam yeeb.
Ua haujlwm nrog kev sib koom tes nrog cov kws tshawb fawb ntawm Kuwait University, pab pawg tau siv Raman spectroscopy rau cov qaub ncaug qhuav los ntawm cov neeg haus luam yeeb thiab cov neeg tsis haus luam yeeb, txhawm rau siv cov tshuaj sib txawv hauv cov qauv los txiav txim seb tus neeg pub haus luam yeeb puas. Raman spectroscopy yog cov txheej txheem tsis muaj kev puas tsuaj uas ua rau muaj kev soj ntsuam sai, ntawm qhov chaw ntawm cov qauv, tsim cov cim ntiv tes tshwj xeeb uas muaj cov hlua uas tsim los ntawm kev sib cuam tshuam ntawm lub teeb nrog cov qauv molecular.
Ib tug yuav xav tias qhov kev sim yuav tsom nicotine, ib qho tshuaj lom neeg tseem ceeb hauv kev haus luam yeeb. Txawm li cas los xij, nicotine yog luv luv nyob rau hauv lub cev, yog li tsis yog lub hom phiaj tsim nyog rau kev tshuaj ntsuam xyuas. Hloov chaw, cov kws tshawb fawb tau tsom mus rau cotinine, ib qho tseem ceeb metabolite ntawm nicotine nrog lub neej ntev dua ib nrab. Cov qauv qaub ncaug los ntawm 32 tus neeg pub dawb tau txheeb xyuas los ntawm Raman spectroscopy thiab cov tshuaj yeeb yaj kiab uas tsim los kawm txog qhov sib txawv. Cov kws tshawb fawb tau ntsib teeb meem sai sai. Raman bands qhia txog cotinine sib tshooj nrog cov kab Raman raug tsim los ntawm qaub ncaug, ua kom pom cov cotinine hauv qaub ncaug nyuaj. Pab neeg no siv tshuab kev kawm los daws qhov teeb meem no.
Ua ntej, lawv tau txheeb xyuas yim thaj tsam spectral uas ua rau muaj kev sib txawv ntawm cov qaub ncaug ntawm cov neeg haus luam yeeb thiab cov neeg tsis haus luam yeeb. Siv cov khoom siv hluav taws xob tsis zoo, cov qauv kev faib tawm tau tsim los rau kev kwv yees ntawm kev haus luam yeeb ntawm tus neeg pub dawb. Los ntawm kev nkag mus rau cov ntaub ntawv tshuaj lom neeg los ntawm cov qauv paub, lub network tuaj yeem kawm los ntawm cov ntaub ntawv txhawm rau kwv yees cov txiaj ntsig (qhov no, txawm tias tus neeg pub khoom ntawm cov qaub ncaug yog tus neeg haus luam yeeb). Hauv kev soj ntsuam raws li kev tshawb fawb, cov qauv tsim tau ua tiav qhov tseeb ntawm 100%.
Txawm hais tias txoj kev tshawb fawb no tau ua raws li cov qauv qis heev, cov txheej txheem qhia tau hais tias muaj kev cog lus zoo hauv kev txiav txim siab ntawm cov yam ntxwv pub dawb los ntawm lub cev qhuav dej.
Al-Hetlani et al. Kev sib txawv ntawm cov neeg haus luam yeeb thiab cov neeg tsis haus luam yeeb raws li Raman spectroscopy ntawm cov kua hauv qhov ncauj thiab cov kev txheeb xyuas qib siab rau kev siv forensic. Phau ntawv Journal of Biophotonics, thiab tuaj yeem pom ntawm no: https://onlinelibrary.wiley.com/doi/abs/10.1002/jbio.201960123 ib txwm, nyob nyab xeeb!
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