Cov txheej txheem:
- Qhov kev sib txuas twg yuav elute thawj zaug hauv qhov hloov pauv HPLC sib cais?
- Cov ntsiab lus dab tsi elute ua ntej hauv HPLC?
- Dab tsi elutes thawj zaug hauv HPLC ib txwm?
- Qhov twg yuav elute ua ntej?
Video: Dab tsi elutes thawj zaug nyob rau hauv reversed theem hplc?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Nyob rau theem HPLC qhov kev txiav txim ntawm elution yog qhov sib txawv ntawm qhov kev sib cais ib txwm, nrog ntau dua polar solutes eluting thawj. Kev nce lub polarity ntawm lub sijhawm txawb ua rau lub sijhawm khaws cia ntev dua.
Qhov kev sib txuas twg yuav elute thawj zaug hauv qhov hloov pauv HPLC sib cais?
Rov qab-theem chromatography ntiav cov polar (aqueous) mobile theem. Yog li ntawd, hydrophobic molecules nyob rau hauv lub polar mobile theem yuav adsorb mus rau lub hydrophobic nyob twj ywm theem, thiab hydrophilic molecules nyob rau hauv lub mobile theem yuav dhau los ntawm kab thiab eluted ua ntej.
Cov ntsiab lus dab tsi elute ua ntej hauv HPLC?
Least polar analytes elute ua ntej, ntau polar analytes tau khaws cia ntev dua. Tsawg mus rau nruab nrab polarity cov kuab tshuaj yog siv (hexane, ethyl acetate, methanol).
Dab tsi elutes thawj zaug hauv HPLC ib txwm?
Nyob rau hauv ib txwm-theem chromatography, qhov tsawg tshaj plaws polar compounds elute ua ntej thiab feem ntau polar compounds elute kawg. Cov theem ntawm lub xov tooj ntawm tes muaj cov kuab tshuaj tsis muaj polar xws li hexane lossis heptane tov nrog me ntsis ntxiv polar hnyav xws li isopropanol, ethyl acetate lossis chloroform.
Qhov twg yuav elute ua ntej?
Ib tug tsis muaj zog polar hnyav yuav zoo li elute qhov tsawg polar molecules ua ntej. Yog li, hexanetej zaum yuav yog thawj tus neeg tau txais txiaj ntsig, vim tias alkanes yog qhov qis dua polar dua alkenes.
Pom zoo:
Dab tsi cuam tshuam rau thawj theem ntawm kev kho qhov txhab?
thawj theem ntawm kev kho qhov txhab yog rau lub cev kom tsis txhob los ntshav Qhov no hu ua hemostasis lossis txhaws thiab nws tshwm sim hauv vib nas this mus rau feeb tom qab koj raug mob. Thaum lub sij hawm no lub cev ua kom nws txoj kev kho thaum muaj xwm ceev los tsim ib lub pas dej los thaiv cov dej thiab tiv thaiv kom tsis txhob muaj ntshav ntau dhau .
Nyob rau hauv reversed theem hplc?
Lub sij hawm thim rov qab-theem piav qhia txog hom chromatography uas yog tsuas yog qhov sib txawv ntawm theem ib txwm, uas yog siv lub polar mobile theem thiab tsis-polar [hydrophobic] nyob ruaj khov theem. … A C18-bonded silica [
Puas yog paracetamol nyob rau hauv cov khoom pab thawj zaug?
Ua kom cov tshuaj hauv qab no tau kuaj xyuas hauv koj daim ntawv teev npe pab thawj zaug: tshuaj txo qhov mob / ua npaws - Nyob ntawm koj qib siab thiab nyiam, qhov no tuaj yeem suav nrog acetaminophen, aspirin, lossis ibuprofen. Txhawm rau npog tag nrho koj cov hauv paus, txawm li cas los xij, tag nrho peb tshuaj yuav tsum suav nrog koj cov khoom pab thawj zaug .
Leej twg yog tus mob hlwb thawj pab thawj zaug hauv tebchaws Askiv?
Mental He alth First Aiders yog… Xibhwb, thawj tus teb thiab qub tub rog Lawv yog cov neeg nyob ze, niam txiv thiab phooj ywg. Lawv yog cov neeg rov qab los, thiab cov neeg txhawb nqa ib tus neeg hlub Lawv yog Thawj Tus Poj Niam thiab Tus Thawj Kav Tebchaws.
Thaum twg yog thawj chav kawm hauv kev puas siab puas ntsws thawj zaug?
"Kev puas siab puas ntsws thawj zaug" tau pib ua tswvcuab hauv nruab nrab-Nyob-xyoo pua ; 1 - 3 nyob rau lub sijhawm tom qab 9/11, kev pabcuam kev puas siab puas ntsws tau tshwm sim los ua qhov tseem ceeb rau kev cuam tshuam kev puas siab puas ntsws thaum ntxov nrog cov muaj sia nyob ntawm kev puas tsuaj thiab xwm txheej hnyav.
