6. If more polar impurities are desired to be eluted first and then analyte, then at which stage do you need a strong organic solvent, such as methanol, when preparing samples with solid phase extraction A. Conditioning and loading b. Loading and eluting c. Washing and eluting d. Conditioning and washing e. Conditioning and eluting 7. If more polar impurities are desired to be eluted first and then analyte, then at which stage do you need a medium strength solvent, for example a mixture of methanol- water or methanol-buffer, when preparing samples with solid phase extraction A. Washing and loading b. eluting c. Conditioning d. Washing and eluting e. washing

6. If more polar impurities are desired to be eluted first and then analyte, then at which stage do you need a strong organic solvent, such as methanol, when preparing samples with solid phase extraction A. Conditioning and loading b. Loading and eluting c. Washing and eluting d. Conditioning and washing e. Conditioning and eluting 7. If more polar impurities are desired to be eluted first and then analyte, then at which stage do you need a medium strength solvent, for example a mixture of methanol- water or methanol-buffer, when preparing samples with solid phase extraction A. Washing and loading b. eluting c. Conditioning d. Washing and eluting e. washing

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter80: Crystallization: Purification Of Solids

Section: Chapter Questions

Problem 4P

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