| abstract |
Improvement of detection output stability in dielectric barrier discharge ionization detectors. In the BID, there are: a dielectric tube (111), in which the plasma generating gas flows; a high-voltage electrode (112), which is arranged around the outer wall of the dielectric tube (111); 2 ground electrodes (113, 114), which are arranged around the The position sandwiching the high-voltage electrode (112); the voltage application device (115), connected to the high-voltage electrode (112), applies an AC voltage between the high-voltage electrode (112) and the two ground electrodes (113, 114), so that the dielectric A discharge is generated in the tube (111) and plasma is generated from the plasma generating gas; the charge collection part (120) detects the ion current of the sample component, and one of the two ground electrodes (113, 114) and the high-voltage electrode The distance between (112) is longer than the discharge start distance between the two, and the distance between the other ground electrode and the high-voltage electrode (112) is shorter than the discharge start distance between the two. |