Method for Analyzing Sample by Electrophoresis and Use of the Same

摘要

A sample analysis method with improved separation accuracy is provided. The method relates to a method for analyzing a sample by electrophoresis using an electrophoresis apparatus provided with a channel and a sample reservoir formed in the channel. The method includes: placing the sample in the sample reservoir of the electrophoresis apparatus with the channel being filled with an electrophoresis running buffer; and performing electrophoresis by applying a voltage to both ends of the channel. The concentration of at least one of a) and b) is set to be approximately the same between the sample and the electrophoresis running buffer; wherein a) and b) are defined as follows: a) an ion that moves in the same direction as an analyte in the sample by the electrophoresis and has a smaller degree of mobility than the analyte, and b) an ion that moves in the opposite direction to the analyte.