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In capillary electrophoresis we measure the..............of analyte.

  • A.Retention time
  • B.Migration time
  • C.Electrophoretic time
  • D.Anodic time

Answer: B

In capillary electrophoresis we measure the migration time of the analyte.

In capillary electrophoresis, analytes move through a narrow fused-silica capillary under a high voltage, driven by their own electrophoretic mobility and by electro-osmotic flow. The time each takes to travel from the inlet to the detector is its migration time, which identifies it and from which its mobility is calculated.

Retention time is the corresponding term in chromatography, where compounds are retained by a stationary phase. 'Electrophoretic time' and 'anodic time' are not standard terms.

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