Low-pressure discharge plasma ion source device based on membrane sample introduction

• Main Authors: LI PENG, LI LINGFENG, CHEN YU, WANG DETING, GE WEI
• Format: Patent
• Language: Chinese; English
• Published: 01.11.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS; ELECTRICITY

The invention discloses a low-pressure discharge plasma ion source device based on membrane sample introduction, macromolecular impurities are filtered out through a semipermeable membrane, the pollution probability of an ion source discharge cavity is greatly reduced, and sample detection and ion source maintenance are facilitated; meanwhile, a conventional solid/liquid phase sample is introduced from the first sample inlet through wiping sample introduction, and when a high-volatility sample or a gas phase sample is detected, the sample can be introduced through the second sample inlet, so that the sample detection range is expanded; meanwhile, the first sample injection port and the second sample injection port can be combined for use, when the first sample injection port is used for directly detecting some specific solid/liquid phase samples, the effect is poor, some specific high-volatility substances or gas phase substances can be introduced into the second sample injection port at the same time to serv