Given the following, determine if compound A and B have baseline resolution. Exp

Question

Given the following, determine if compound A and B have baseline resolution. Explain your answer. If baseline resolution does not exist, provide the minimum retention time difference between the two compounds. trA = 5 min wA = 4trB = 8 min wB = 3 tm = 0.2 min What is the order of elution for the following compounds on the following columns: a) polydimethylsiloxane b) polyethylene glycol. Discuss the stationary phase to help explain your reasoning: pentane (bp=36 degree C), butanol (bp=117 degree C), 3-pentanone (bp=102 degree C). Please discuss when it is appropriate to use temperature programming in an analysis and the advantages when compared to isothermal methods. Determine which method you would use for these two mixtures: a) heptane, octane, nonane, decane b) pentane, butanol, 3-heptanone, cyclohexanone. Please discuss how you could decrease the retention time of an analyte (include temperature, column flow, stationary phase, column length, internal diameter, and film thickness in your discussion). Will doubling your column length also double your separation power? Why or why not (please use equations and theory to answer). Please provide the best detector for each type of analysis (including a discussion of theory of the detector in your explanation): a) Identification of the components in a mixture b) Analysis of tetrachloromethane. You are a forensic chemist analyzing a urine sample for drugs. Would you use a liquid injection or headspace SPME sample introduction? Also, would you employ split or splitless injection? Explain why.

Explanation / Answer

which one ???

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