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What determines if something has a low retention time in gas chromatography?

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The temperature, pressure, and type of column used in gas chromatography determine whether something has a low retention time. Typically, higher temperatures, lower pressures, and shorter columns result in lower retention times. The type of column also affects retention times, with nonpolar columns typically causing the lowest retention times. Retention times are also influenced by the physical properties of the sample itself, such as its volatility, polarity, and size.
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