Cov pa roj carbon monoxide yog cov roj inert siv los nqa cov qauv. Helium (He), nitrogen (N 2), hydrogen (H2), thiab argon (Ar) feem ntau siv. Helium thiab nitrogen feem ntau yog siv thiab kev siv helium yog qhov xav tau thaum siv cov kab capillary.
GC siv dab tsi?
Lub sijhawm txawb siv hauv GC yog an inert gas, xws li nitrogen, helium, lossis hydrogen. Lub sij hawm mobile feem ntau yog hu ua cov pa roj; Thaum cov khoom sib xyaw ntawm cov tshuaj txhaj rau ntawm kab ntawv nkag, txhua yam khoom raug nqa mus rau lub tshuab kuaj xyuas los ntawm cov cab kuj roj.
Vim li cas cov pa roj hydrogen siv hauv roj chromatography?
Hydrogen yog ib qho tseem ceeb ntawm cov khoom siv roj rau GC thiab muab ntau yam txiaj ntsig zoo piv rau kev siv helium lossis nitrogen.… Tsis tas li ntawd, hydrogen nquag tso cai rau kev siv qhov ntsuas kub qis rau kev sib cais, yog li ua kom cov kab ntev ntev.
Vim li cas oxygen tsis siv hauv roj chromatography?
Thaum twg cov pa roj tau siv rau hauv cov txheej txheem chromatography, muaj peev xwm ua rau cov pa paug, txawm tias los ntawm cov khoom siv, lub tank cia, lossis los ntawm chromatograph nws tus kheej. Nitrogen gas tso pa oxygen Yog tias nitrogen tau xau, huab cua theem yuav ua rau cov pa tsis txaus thiab cov neeg ua haujlwm yuav raug teeb meem kev noj qab haus huv.
Vim li cas helium siv hauv GC cov cab kuj roj?
Ntau cov pa roj chromatography (GC) labs siv helium ua cov pa roj carbon monoxide vim nws sai dua nitrogen thiab nyab xeeb dua hydrogen … Lub sijhawm soj ntsuam sai dua, tus nqi qis dua, thiab tsis muaj kev txwv ntawm hydrogen ua rau nws xaiv qhov zoo tshaj plaws chromatographic, tab sis nws cov flammability txhais tau tias kev siv yuav tsum tau ua tib zoo xav.
