what is the difference between gc& hplc. why we r not
calculating purity by gc for final products

Answer Posted / nidhi srivastava

In the majority of the cases the analytical method of
choices is either GC or HPLC. GC generally selected where
the compounds to be analysed are volatile, of low molecular
weight, thermally stable and non polar.In HPLC methods
developed for analytical work with picograms, nanograms of
compounds are simply transferred to larger columns to higher
flow rates for preparative chromatography for the isolation
of milligrams or grams of compounds. Similar scale
preparative GC would be impractical, if not impossible, in
the laboratory.

Is This Answer Correct ?    1 Yes 1 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How we choose the mobile phase for method development.?

662


What is similarity factor and its use in api strength?

801


why multimedia dissolution require to do?

311


What is the Formula for coreletion coefficient in plhplc calibration

1253


why xterra column require to use at higher ph?

436






For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?

1796


mahagenco syllabus for the post of chemist

5744


what is mean by covalidation

325


in which situation require to use paddle and basket?

293


Why sometime potassium ortho phosphate mix with acetone use for sample preparation for hplc

988


USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...

1560


Which parameters require to do in tech transfer?

281


Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?

2477


if you have given one product then how you determine the impurity in that?

294


Why sodium hydroxide used for maintain pH of phosphate buffer

1843