Aulia Zulfa

3 Questions 1 Answers 0 Followers

Questions related from Aulia Zulfa

How to choose conditioning solvent in SPE?

If loading the sample using acetonitrile, is it possible to use methanol or H2O or H2O:acetonitrile (9:1) as the conditioning solvent on MIP methacrylic acid monomer?

18 May 2022 895 3 View

Why i get % analyte recovery during washing solid phase extraction?

why is there % recovery analyte (diazepam) in the washing stage. even though the analyte is practically insoluble in the washing solvent (water)?

18 May 2022 156 2 View

Why am I getting less than 100% recovery after solid phase extraction?

I dissolved diazepam in acetonitrile and got a concentration of 1 ppm. after SPE, then ran the sample through HPLC. Total % recovery (conditioning, loading, washing, eluting) didn't reach 100%. I...

19 March 2022 7,247 3 View