Gas Chromatography
Column bleeding occurs when

the column breaks during installation and causes personal injury
elution of the analyte is extended over time
the column is cracked and stationary phase leaks out
traces of the stationary phase are eluted

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Gas Chromatography
Resolution is proportional to the

cube root of the number of theoretical plates in a column
square of the number of theoretical plates in a column
square root of the number of theoretical plates in a column
number of theoretical plates in a column

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