DISCHARGE IONIZATION CURRENT DETECTOR AND TUNING METHOD FOR THE SAME

摘要

An adjusting method for a discharge ionization current detector of the present invention is provided for a discharge ionization current detector for a gas chromatograph, which improves the precision and reproducibility of measurements results of the detector. The discharge ionization current detector adjusts at least one of purity of introduced helium gas, a flow rate of the introduced helium gas, an amplitude of voltage of the low-frequency dielectric barrier discharge, and a frequency of the voltage of the low-frequency dielectric barrier discharge so that intensity of light having a wavelength of 640 nm reaches the maximum in a range of wavelengths of 250 to 700 nm with respect to light emitted by the helium plasma.

主权项

1. A tuning method for a discharge ionization current detector configured to utilize helium plasma generated by low-frequency dielectric barrier discharge, comprising:
adjusting at least one of purity of introduced helium gas, a flow rate of the introduced helium gas, an amplitude of voltage of the low-frequency dielectric barrier discharge, and a frequency of the voltage of the low-frequency dielectric barrier discharge so that intensity of light having a wavelength of 640 nm reaches the maximum in a range of wavelengths of 250 to 700 nm with respect to light emitted by the helium plasma.