Atmospheric Kirschner intermediate generation and detection system and detection method based on laser photolysis-infrared spectroscopy combined technology

By combining excimer laser photolysis and MI-FTIR technology, and employing low-pressure flow tube premixing and a photolysis-deposition-while-deposition mode, the challenges of CI generation and detection were solved, achieving efficient and accurate CI generation and detection.

CN122150169APending Publication Date: 2026-06-05INST OF CHEM CHINESE ACAD OF SCI
0 Cites 0 Cited by

Patent Information

Application Number
CN202610319150.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-16
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing technologies struggle to efficiently generate and accurately detect highly active, transient Kjeldahl intermediates (CIs). Traditional methods such as VUV-MS and UV methods suffer from high costs or insufficient recognition capabilities. In MI-FTIR technology, the primary photolysis product CH2I reacts with O2, resulting in low yields.

Method used

By combining excimer laser photolysis with matrix-isolated Fourier transform infrared spectroscopy (MI-FTIR), along with low-pressure flow tube premixing and a "photolysis-deposition-while-depositing" working mode, efficient generation and high-sensitivity detection of CIs can be achieved.

Benefits of technology

It enables the generation and accurate identification of high-concentration CIs, overcomes the limitations of traditional methods, and provides a reliable technical platform for the study of atmospheric reactive intermediates.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses an atmospheric Kirschner intermediate generation and detection system and detection method based on a laser photolysis-infrared spectrum combined technology. The system comprises a low-pressure flow tube sample introduction module, an excimer laser photolysis module, a high-vacuum ultralow-temperature reaction tank module and an in-situ Fourier transform infrared spectrum detection module. The low-pressure flow pipe sampling module is used for conveying mixed gas to the high-vacuum ultralow-temperature reaction tank module; the excimer laser photolysis module is used as a photolysis source and is guided to the high-vacuum ultralow-temperature reaction tank module through a light path; and the in-situ Fourier transform infrared spectrum detection module is used for carrying out infrared spectrum acquisition and analysis on a caesium iodide cold window surface captured sample of the high-vacuum ultralow-temperature reaction tank module. The CIs can be efficiently generated in situ in an ultralow-temperature substrate isolation environment through a working mode of low-pressure flow tube premixing and'photolysis while deposition ', and high-sensitivity and high-specificity infrared detection of the CIs can be realized.
Need to check novelty before this filing date? Find Prior Art