The boiling point of 1,3 butadiene is -4.4 DC & the boiling point of Pentane is 36.1 DC. Then how come Pentane elute before 1,3 BD in GC analysis?
Answer / surinder kumar
Gas -Chromatography is based on the adsorption mechanism i.e.
if a substance is strongly adsorbed on the columns then that substance will get eluted in the last moments.
as 1,3 Butadiene gets adsorbed strongly to the columns due to its resonating structures(charged,polar-polar interactions,polar-non polar interactions due to neutral structure)so it gets eluted later than pentane which has no such interactions with the columns phase
|Is This Answer Correct ?||3 Yes||1 No|
What is the reason for negative peak in HPLC while using UV detector.
mahagenco syllabus for the post of chemist
How to choose the which salt is suitable for mobilephase
What is the procedure for UV-spectrophotometer calibration?
give me method of calculating co relation of coefficient for HPLC,SOR & ANY OTHER
In lcms analysis some times we get sodium and potassium adducts. if the compound is havine sodium ions how can we confirm wether sodium is from sample or it is a adduct?
why plane of polarized light rotated by opticaly active compunds?
what is the results if we use ODScolumn instead of BDS column ,(ther parameter is same for column) in assay method ?
ash or residue in that what will be there.
state the principle of gas chromatography?
key components in gas chromotagraphy.
my name is santhosh i cmpleted b.pharmacy in 2009 then i went to uk in 2010 to pg diploma business management. after i came back to india.. recently again apply to uk for pharmaceutical analysis. they refused my visa you failed to explain y u r change subject. so plz ineed answer for y change the cource