Development and application on online VOCs adsorption/thermal desorption system

LAN Jie; CHEN Yanrui; TAN Guobin; CHE Xinxin; SU Haibo; HUANG Fugui; WANG Tong; LIU Shulin; GAO Wei; HUANG Zhengxu

doi:10.13471/j.cnki.acta.snus.2020.03.013

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Development and application on online VOCs adsorption/thermal desorption system

更新时间：2023-12-11

- Development and application on online VOCs adsorption/thermal desorption system
- Acta Scientiarum Naturalium Universitatis SunYatseni Vol. 59, Issue 3, Pages: 118-126(2020)
- 作者机构：
  
  1. 山西省生态环境监测中心,山西,太原,030027
  2. 广州禾信仪器股份有限公司,广东,广州,510530
  3. 暨南大学质谱仪器与大气环境研究所,广东,广州,510632
  4. 中国科学院高能物理研究所,北京,100049
- 作者简介：
- 基金信息：
- DOI：10.13471/j.cnki.acta.snus.2020.03.013
  CLC：
- Published：2020，
  
  Published Online：25 May 2020，
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LAN Jie, CHEN Yanrui, TAN Guobin, et al. Development and application on online VOCs adsorption/thermal desorption system. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 59(3):118-126(2020)
DOI：

LAN Jie, CHEN Yanrui, TAN Guobin, et al. Development and application on online VOCs adsorption/thermal desorption system. [J]. Acta Scientiarum Naturalium Universitatis SunYatseni 59(3):118-126(2020) DOI： 10.13471/j.cnki.acta.snus.2020.03.013.

摘要

研制开发了一套用于提高在线 VOCs 检测质谱仪灵敏度的在线VOCs富集热脱附系统。系统基于快速、精确的控温模块，采用大流量持续进样、双通路预浓缩模块转换交替的工作模式，满足与VOCs 在线检测仪器联用的需求，且可以与常规离线技术的联用。采用苯系物标准气体对该系统的工作条件、富集能力、稳定性等性能参数进行了测试，同时考察了该系统在室内空气VOCs组分检测中的应用。结果表明：在线 VOCs 富集热脱附系统与在线VOCs 检测质谱仪联用后，方法灵敏度提升了两个数量级；其次，与单独使用在线VOCs 检测质谱仪相比，在线 VOCs 富集热脱附系统与在线VOCs 检测质谱仪联用后可有效提高环境空气样品中痕量VOCs组分的检测能力。该系统为痕量VOCs气体检测等领域提供了一项新的检测技术。

Abstract

An online VOCs adsorption/thermal desorption system was developed for enhancing the sensitivity of online VOCs mass spectrometry. By integrating a fast and precise temperature control module

a large flow rate sampling strategy and a switch mode pre-concentration module

the new system can be coupled to both online VOC detection instruments and offline ones. The performance of the system

such as operating conditions

enrichment capacity

stability

was tested by using a benzene series standard gas. Meanwhile the system was used to analyze the VOCs components in indoor air. The result show that the sensitivity of the online VOCs mass spectrometry was increased by two orders of magnitude. Secondly

compared to single online VOCs mass spectrometry

the system coupled to online VOCs mass spectrometry can greatly enhance the detectability of trace amount VOCs components in indoor air. This system will provide a new technology for trace VOCs gas detection.

关键词

富集热脱附VOCs在线质谱室内空气&nbsp

Keywords

adsorption/thermal desorptionVOCsonline mass spectrometryindoor air&nbsp

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