Question

For each of the following mixtures of compounds, choose the best combination of separation method and detector that would be able to separate and analyze the mixture. a. a mixture of C7-C10 alkyl halides.(bp 150-200o C) Reverse Phase LC-MS CE-Fluorescence Normal phase LC-Absorbance GC-MS GC-ECD b. a mixture of amino acids in pH 2 buffer solution Reverse Phase LC-MS GC-ECD GC-MS Normal phase LC-Absorbance CE-Fluorescence c. a round bottom flask containing an organic starting material, product and possible byproducts. Assume low volatility. GC-MS CE-Fluorescence GC-ECD Reverse Phase LC-MS Normal phase LC-Absorbance d. a mixture of polycyclic aromatic hydrocarbons (solids, non-polar, non-volatile) CE-Fluorescence GC-ECD Normal phase LC-Absorbance GC-MS Reverse Phase LC-MS e. a mixture of low molecular weight atmospheric pollutants collected from a freeway during rush hour. GC-MS Normal phase LC-Absorbance CE-Fluorescence Reverse Phase LC-MS GC-ECD

Answer 1