Trace detection device

US12352726B2 · kind B2 · utility

Assignees

• NUCTECH COMPANY LIMITED · CN
• TSINGHUA UNIVERSITY · CN

Inventors

• Qingjun Zhang · Beijing, CN
• Yuanjing Li · Beijing, CN
• Zhiqiang Chen · Beijing, CN
• Jianmin Li · Beijing, CN
• Weiping Zhu · Beijing, CN
• Qiufeng Ma · Beijing, CN
• Biao Cao · Beijing, CN
• Lili Yan · Beijing, CN
• Ge Li · Tangxia, CN
• Nei Yang · Beijing, CN

Key dates

• Filing date: May 14, 2021
• Grant date: Jul 8, 2025
• Expiry date: Mar 31, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2030/201
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A trace detection device including: an ion mobility tube; a sampling gas path module; a sample injection gas path module configured to introduce a sample carrier gas containing a sample collected by the sampling gas path module toward the ion mobility tube; and a gas chromatography apparatus capable of pre-separating the sample carrier gas, so as to form a pre-separated sample carrier gas; wherein the sample injection gas path module is further configured to be capable of switching between a first mode and a second mode, in the first mode, the sample injection gas path module introduces the sample carrier gas into the ion mobility tube; and in the second mode, the sample injection gas path module introduces the sample carrier gas into the gas chromatography apparatus to pre-separate the sample carrier gas, and the pre-separated sample carrier gas is introduced into the ion mobility tube.