Analysis system

Abstract

An analysis chip for capillary electrophoresis includes a capillary tube, and a filter that is provided upstream of the capillary tube. The chip can also include an introducing tank connected to one end of the capillary tube, and a discharging tank connected to another end of the capillary tube.

What is claimed is: 
     
         1 . An analysis chip for capillary electrophoresis, comprising a capillary tube, and a filter that is provided upstream of the capillary tube. 
     
     
         2 . The analysis chip according to  claim 1 , wherein the filter removes an aggregate of a sub component other than an analysis component to be analyzed and an anionic group-containing compound from a mixed sample that is obtained by mixing an original sample and an anionic group-containing compound, before the mixed sample is introduced into the capillary tube. 
     
     
         3 . The analysis chip according to  claim 1 , wherein the filter is a cellulose acetate membrane filter. 
     
     
         4 . The analysis chip according to  claim 1 , wherein the filter has a pore size of about 0.45 μm. 
     
     
         5 . The analysis chip according to  claim 1 , wherein the chip further comprises:
 an introducing tank connected to one end of the capillary tube, and   a discharging tank connected to another end of the capillary tube.   
     
     
         6 . The analysis chip according to  claim 5 , wherein the filter is provided at an opening portion of the introducing tank. 
     
     
         7 . The analysis chip according to  claim 5 , wherein:
 the chip further comprises a mixing portion in which the original sample and the anionic group-containing compound are mixed,   the mixing portion and the introducing tank are connected via a flow path, and   the filter is provided at a point on the flow path, or a portion connecting the flow path and the mixing tank, or a portion connecting the flow path and the introducing tank.   
     
     
         8 . The analysis chip according to  claim 1 , wherein the chip further comprises an electrode tank into which an electrode is inserted. 
     
     
         9 . The analysis chip according to  claim 1 , wherein the chip is disposable.