| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrophoretic apparatus whose detection accuracy is enhanced by a method wherein the flow direction of an electroosmotic flow in a part of an analytical flow channel on the side opposite to a detector is reversed regarding a flow-channel crossing part. SOLUTION: The flow direction of the electroosmotic flow in an analytical supply flow channel 31 as a part of the analytical flow channel 3 is reversed. Thereby, the width of a sample region inside the flow channel 3 is narrowed, and the flow into the flow channel 3 of a sample as an object, to be analyzed, to become a detection noise is prevented. Since the width is made narrow at a point of time when the sample is introduced to the flow channel 3, a region in which adjacent sample zones are overlapped is reduced, the noise is reduced, and the detection accuracy of the electrophoretic apparatus is enhanced. |
