| 摘要 |
PROBLEM TO BE SOLVED: To reduce the noise accompanying the adhesion of liquid droplets to the leading end part of a pipe for desolvation. SOLUTION: In the liquid chromatographic mass spectroscope guiding charge liquid droplets formed in an atmospheric pressure ionizing chamber by an ionizing means in an intermediate exhaust chamber held in a vacuum state through a pipe and further guiding the liquid droplets to the detector in the mass sectroscopic chamber adjacent to the intermediate exhaust chamber to detect the same, the leading end part 33a on the side of the atmospheric pressure ionizing chamber 43 of the pipe 33 is turned downwardly and surface treatment such as polishing for preventing the adhesion of liquid droplets is applied to the pipe to enhance the flowability of the liquid droplets on the surface of the pipe and the liquid particles are prevented from becoming large particles to reduce noise.
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