公开(公告)号：US20240175803A1

公开(公告)日：2024-05-30

申请号：US18432313

申请日：2024-02-05

Applicant: Anhui University of Science and Technology

Inventor： Huawei JIN ,  Xu WANG ,  Haowei WANG

IPC: G01N21/17 ,  G01N1/14 ,  G01N33/00

CPC classification number: G01N21/1702 ,  G01N1/14 ,  G01N33/0027 ,  G01N2021/1704 ,  G01N2201/06113 ,  G01N2201/0636

Abstract: Disclosed is a synchronous detection system for a trace nitrogen-oxygen compound based on photoacoustic spectrometry, including a NOx (Nitrogen Oxide) detection air channel, a dust detection air channel and a double-photoacoustic spectrometry detection mechanism which are mutually connected in parallel; the NOx detection air channel includes a background interference detection air pipe, a NO2 detection air pipe and a NO detection air pipe that are mutually connected in parallel, and a NOx photoacoustic detection cavity; and the dust detection air channel includes a dust detection air pipe and a dust photoacoustic detection cavity communicating with the dust detection air pipe.