A) Water B) Acetone C) Methanol D) Carbon dioxide
A) Gas B) Supercritical C) Solid D) Liquid
A) Differences in conductivity B) Differences in molecular weight C) Differences in boiling point D) Differences in solubility in the mobile phase
A) Higher resolution B) Lower equipment cost C) Faster separation D) Limited application range
A) Gas B) Liquid C) Aqueous D) Solid
A) Enhance detector sensitivity B) Maintain supercritical conditions C) Increase column temperature D) Avoid solvent contamination
A) Reduces detector interference B) Improves stationary phase selectivity C) Stabilizes column efficiency D) Enhances analyte solubility
A) Near-critical region B) Supercritical zone C) Transition zone D) Critical point |