Definitions


335. peak fronting Distortion of the classical Gaussian form of a chromatographic peak due to one or more factors, including sorption isotherms and column overload. The analyte molecules at the center of a migrating band move slower than those on the outer edges.


336. peak height The instrument response height of the peak on a chromatogram produced by a substance subjected to chromatographic analysis. Proportional to either the concentration or mass of the substance, depending on the mode of detection.


337. peak height ratio Ratio of the instrument response peak height of the target compound in the sample to the peak height of an internal standard.


338. peak tailing Distortion of the form of a chromatographic peak, which deviates from its theoretical Gaussian form due to one or more factors, including secondary interactions of the analyte with separation materials.


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