Advantage of high performance liquid chromatography over gas chromatography
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The Samples
GC is used for volatile compounds (those that break down rapidly) while HPLC is better for less volatile samples. If a sample contains salts or carries a charge, it must be analyzed using HPLC, not GC.
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Sensitivity and Resolution
HPLC does have low sensitivity for certain compounds, and some cannot be detected as they are irreversibly adsorbed. Volatile substances are better separated by gas chromatography.
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