| 摘要 |
PURPOSE:To analyze with high accuracy even if an electrically conductive liquid is used as a carrier in liquid chromatography, by specifying the relation of the length of an electric current flowing passage between electrodes of separated component detection cell to a sectional area of the flowing passage and a liquid contact area of the electrode. CONSTITUTION:A dent part is provided on one side of e.g. a rectangular parallelepiped insulation bolck 4 and a flat laminar electrode 1 is put in and then, two flat laminar electrodes 2, 3 are put in each dent part of the other side of the block 4 and moreover, spaces 5a, 5b, 6a, 6b provided for a liquid flowing passage and channels 7a, 7b provided for an electric current and liquid flowing passage, are formed between the electrodes 1, 2, 3 and the bottom face of the dent part. sample component sent from a separation column is charged from an introducing entrance 8a and is discharged to an exit 9a. A reference liquid is charged from an introducing entrance 8b and is discharged to an exit 9b. It is constituted so as to be >=5Sl/A or preferably >=20Sl/A, where l is the length of the channel 7a, 7b, A is the sectional arrea of each channel 7a, 7b, S is the total area of the liquid contact part (the part where the space 5a contacts with the space 5b) and each liquid contact part of each electrode 2 and 3 and the units are represented by mm., m<2> respectively. Hereby, the sample component is detected accurately even if a carrier liquid is an electrically conductive liquid such as a buffer solution. |
