Scholarlink

Abstract <p>To detect ecotoxicants in the atmosphere by absorption spectroscopy, it is necessary to know their spectroscopic parameters. The absorption spectra of gaseous chloroform were measured using a high resolution spectrometer with phase-switching in 2-mm wavelength subranges, where spectroscopic data are lacking. The experimental results were compared with theoretical estimates of the absorption rotational line central frequencies. After preliminary measurements in the 118.6–118.9 GHz subrange, their comparison with the literature data, and confirmation of a possibility of reliable detection of absorption lines in the spectrum, the absorption lines for CH<sup>35</sup>Cl<sub>3</sub> in the ground and in excited vibrational states (ν<sub>3</sub> and 2ν<sub>3</sub>) were detected and identified in the 131–132, 137–139, 150–152, and 156–158 GHz spectral ranges. The results can be used for detecting CH<sup>35</sup>Cl<sub>3</sub> in the atmosphere.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Gaseous Chloroform Spectra in the 2-mm Wavelength Range: High-resolution Nonstationary Spectroscopic Study

  • 期刊论文

  • 发表日期：

    2025年12月1日

查看全文
  • V. L. Vaks,
  • E. G. Domracheva,
  • M. B. Chernyaeva,
  • V. A. Anfertev,
  • Yu. V. Kistenev

摘要

Abstract

To detect ecotoxicants in the atmosphere by absorption spectroscopy, it is necessary to know their spectroscopic parameters. The absorption spectra of gaseous chloroform were measured using a high resolution spectrometer with phase-switching in 2-mm wavelength subranges, where spectroscopic data are lacking. The experimental results were compared with theoretical estimates of the absorption rotational line central frequencies. After preliminary measurements in the 118.6–118.9 GHz subrange, their comparison with the literature data, and confirmation of a possibility of reliable detection of absorption lines in the spectrum, the absorption lines for CH35Cl3 in the ground and in excited vibrational states (ν3 and 2ν3) were detected and identified in the 131–132, 137–139, 150–152, and 156–158 GHz spectral ranges. The results can be used for detecting CH35Cl3 in the atmosphere.