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

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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