测量一氧化氮光谱参数：考虑 CO 和 HO 的影响。

Measurement of nitric oxide spectral parameters: Considering the effects of CO and HO.

机构信息

Information Materials and Intelligent Sensing Laboratory of Anhui Province, Anhui University, 230601 Hefei, China; Key Laboratory of Opto-Electronic Information Acquisition and Manipulation of Ministry of Education, Anhui University, 230601 Hefei, China.

出版信息

Spectrochim Acta A Mol Biomol Spectrosc. 2022 Dec 15;283:121749. doi: 10.1016/j.saa.2022.121749. Epub 2022 Aug 13.

DOI:10.1016/j.saa.2022.121749

PMID:35985227

Abstract

A continuous-wave quantum cascade laser (CW-QCL) based spectrometer is developed to investigate the high-resolution spectral parameters of nitric oxide (NO). Line strengths and nitrogen (N)-, carbon dioxide (CO)-, water vapor (HO)-, broadening coefficients for NO R(6.5) are measured. The spectral region ranging from 1989 cm to 1901 cm, which is suitable for the in situ laser sensing of trace NO, is investigated. Spectral parameters are determined by fitting absorption spectra with multi-peak Voigt profiles. The measured intensities are compared to the HITRAN2020 database to assess the performance of the system and a good agreement within ±5% is obtained for the established lines. The measurement results are useful for the design of a spectroscopic sensor for monitoring exhaled breath NO, vehicle exhaust, and industrial emissions.

摘要

一种基于连续波量子级联激光器（CW-QCL）的分光仪被开发出来，用于研究一氧化氮（NO）的高分辨率光谱参数。测量了线强度和氮（N）-、二氧化碳（CO）-、水蒸气（HO）-、NO R（6.5）的展宽系数。研究了适用于痕量 NO 原位激光感应的光谱区域，范围从 1989 cm 到 1901 cm。通过用多峰 Voigt 轮廓拟合吸收光谱来确定光谱参数。将测量的强度与 HITRAN2020 数据库进行比较，以评估系统的性能，并且对于所建立的线，在±5%的范围内得到了很好的一致性。测量结果对于监测呼气 NO、车辆尾气和工业排放的光谱传感器的设计很有用。