Video: Kev koom ua ke hauv H NMR yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev koom ua ke yog qhov ntsuas ntawm qhov chaw siab tshaj ntawm qhov NMR spectrum. Nws sib haum mus rau tus nqi ntawm lub zog absorbed los yog tso tawm los ntawm tag nrho cov nuclei koom nyob rau hauv tshuaj hloov nyob rau hauv lub nuclear spin flip txheej txheem. Nws yog siv los txiav txim qhov piv ntawm hydrogens uas sib haum rau lub teeb liab.
Ib yam li ib tug yuav nug, NMR ntsuas kev koom ua ke li cas?
Kev koom ua ke curves thiab hydrogen peaks ntawm ib 1H NMR spectrum. Rau ntsuas qhov siab ntawm ib kev koom ua ke , koj pib nyob rau hauv qab ntawm lub kev koom ua ke nkhaus qhov twg nws tiaj tus, thiab ntsuas mus rau qhov twg qhov nkhaus rov tiaj tus.
Qhov thib ob, kev hloov tshuaj lom neeg hauv NMR yog dab tsi? Los ntawm Wikipedia, dawb encyclopedia. Hauv nuclear magnetic resonance ( NMR ) spectroscopy, ua tshuaj hloov pauv yog lub resonant zaus ntawm ib tug nucleus txheeb ze rau tus qauv nyob rau hauv ib tug magnetic teb. Feem ntau txoj hauj lwm thiab tus naj npawb ntawm tshuaj hloov pauv yog kuaj ntawm cov qauv ntawm ib tug molecule.
Cov lus nug tseem yog, qhov siab txhais li cas hauv NMR?
Qhov kev daws teeb meem tsawg NMR spectrum qhia rau koj. Nco ntsoov: Tus naj npawb ntawm ncov Qhia rau koj paub txog cov chaw sib txawv ntawm cov hydrogen atoms nyob rau hauv. Qhov piv ntawm cov cheeb tsam hauv qab ncov qhia koj txog qhov piv ntawm cov lej ntawm hydrogen atoms hauv txhua qhov chaw.
NMR qhia koj li cas txog kev sib txuas?
Taw qhia NMR los yog nuclear magnetic resonance spectroscopy yog ib tug txheej txheem siv txiav txim a cov compound tshwj xeeb qauv. Nws txheeb xyuas cov pa roj carbon-hydrogen moj khaum ntawm cov organic compound.
Pom zoo:
Dab tsi yog qhov yooj yim kev koom ua ke txoj kev xav hauv biology?
Plaub lub hauv paus ntsiab lus sib koom ua ke tsim lub hauv paus ntawm biology niaj hnub no: cell theory, evolutionary theory, the gene theory and the principle of homeostasis. Plaub lub hauv paus ntsiab lus no tseem ceeb rau txhua qhov thiab txhua qhov chaw ntawm biology
Dab tsi yog kev saib xyuas ntawm kev ruaj ntseg sab hauv txawm tias muaj kev hloov pauv hauv ib puag ncig sab nraud?
Kev saib xyuas ntawm kev ruaj ntseg sab hauv txawm tias muaj kev hloov pauv hauv ib puag ncig sab nraud yog hu ua homeostasis
Kev sib koom siab thiab kev sib txawv hauv biology yog dab tsi?
Evolution yog kev sib koom ua ke ntawm biology. Nws piav txog kev sib koom siab thiab ntau haiv neeg ntawm lub neej. 1) Cov xeeb leej xeeb ntxwv los ntawm cov poj koob yawm txwv piav txog kev sib sau ntawm lub neej. 2) kev sib koom ua ke ntawm lub neej = cov khoom muaj sia sib koom ua ke thiab cov qauv ntawm tes (DNA, RNA thiab cell membrane)
Dab tsi yog cov kev siv ntawm kev sib koom ua ke?
Ib daim ntawv thov tseem ceeb ntawm kev sib koom ua ke yog lawv siv los ua cov catalysts, uas pab hloov cov tshuaj tiv thaiv kab mob. Qee qhov nyuaj hlau catalysts, piv txwv li, ua lub luag haujlwm tseem ceeb hauv kev tsim cov polyethylene thiab polypropylene
Cov kev ntsuas ntawm kev koom ua ke yog dab tsi?
Ib qho kev ntsuas ntawm kev sib koom ua ke ntsuas qhov kev sib raug zoo ntawm kev sib kis thiab kab mob ntawm ob pawg. Piv txwv ntawm kev ntsuas ntawm kev koom tes muaj xws li kev pheej hmoo ntawm kev pheej hmoo (tus txheeb ze kev pheej hmoo), tus nqi sib piv, qhov sib txawv ntawm qhov sib txawv, thiab qhov sib piv ntawm kev tuag