Scholarlink

<p>Volatile sulfur compounds (VSCs) are major contributors to odor pollution and acid rain formation, making accurate monitoring of atmospheric VSCs levels essential for controlling anthropogenic emissions. In this study, we developed a method for the enrichment and quantification of trace VSCs in actual gas using MIL-53(Al) as preconcentration adsorbent coupled with gas chromatography (GC). We investigated and optimized several factors affecting the efficiency of the method, including adsorbent amount, adsorption temperature, sampling volume, gas flow rate, and desorption temperature. Under optimal experimental conditions, the method demonstrated good linearity in the range of 0.10–26.67&#xa0;nmol/mol (<i>R</i><sup>2</sup> ≥ 0.9968), with low detection limits ranging from 0.03 to 0.11&#xa0;nmol/mol for ten VSCs. The established method was successfully applied to the enrichment and detection of trace VSCs in four complex actual gas samples, achieving satisfactory recoveries between 82.7% and 109.3%, and good precision with relative standard deviations (RSDs) ≤ 7.12%. This study presents a simple and effective approach for the simultaneous detection of VSCs, offering great potential for VSCs monitoring.</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

Determination of Volatile Sulfur Compounds by MIL-53 (Al) Preconcentration and Gas Chromatography

  • 期刊论文

  • 发表日期：

    2025年5月26日

查看全文
  • Ping Guo,
  • Mei Tang,
  • Yu Miao,
  • Rongfu Huang,
  • Xiaorong Hu

摘要

Volatile sulfur compounds (VSCs) are major contributors to odor pollution and acid rain formation, making accurate monitoring of atmospheric VSCs levels essential for controlling anthropogenic emissions. In this study, we developed a method for the enrichment and quantification of trace VSCs in actual gas using MIL-53(Al) as preconcentration adsorbent coupled with gas chromatography (GC). We investigated and optimized several factors affecting the efficiency of the method, including adsorbent amount, adsorption temperature, sampling volume, gas flow rate, and desorption temperature. Under optimal experimental conditions, the method demonstrated good linearity in the range of 0.10–26.67 nmol/mol (R2 ≥ 0.9968), with low detection limits ranging from 0.03 to 0.11 nmol/mol for ten VSCs. The established method was successfully applied to the enrichment and detection of trace VSCs in four complex actual gas samples, achieving satisfactory recoveries between 82.7% and 109.3%, and good precision with relative standard deviations (RSDs) ≤ 7.12%. This study presents a simple and effective approach for the simultaneous detection of VSCs, offering great potential for VSCs monitoring.