石油化工安全环保技术 ›› 2020, Vol. 36 ›› Issue (6): 53-57.

• 清洁生产与综合治理 • 上一篇    

采用P&T-GC-FID 分析系统对水中痕量VOCs 组分进行定量

马福岚,Damien Bazin Jean-Philippe Amiet,Michel Robert,Didier Wang   

  1. 科马特泰克贸易(北京)有限公司,北京 100022
  • 收稿日期:2020-07-28 出版日期:2020-12-20 发布日期:2021-02-10
  • 通讯作者: 马福岚 E-mail: info@chromatotec.com
  • 作者简介:马福岚,男,1982 年毕业于法国波尔多大学, 生化学博士,气体分析专家,现任Chromatotec 集团总裁 及首席执行官。E-mail: info@chromatotec.com

Quantification of VOCs at Trace Level by Auto- P&T-Gc-Fid in Liquid Matrices

Franck Amiet, Damien Bazin, Jean-Philippe Amiet, Michel Robert, Didier Wang   

  1. Chromatotec Trading (Beijing) Co., Ltd., Beijing, 100022
  • Received:2020-07-28 Online:2020-12-20 Published:2021-02-10
  • Contact: Franck Amiet, E-mail: info@chromatotec.com

摘要: 挥发性有机物(VOCs)诸如苯、甲苯、乙苯、和二甲苯异构体(BTEX)主要是从人为 源排放或泄漏到环境中的。VOCs 的水溶性和极性使其极可能污染地下水。因此,人们能够通过受污染 的饮用水接触到挥发性有机物。对水基质中的挥发性有机物进行准确、连续的监测和量化,对于增进 对有毒物质接触的了解,提高人的安全意识至关重要。VOCs 浓度测定必须遵守法规。在本研究中,提 出了一种解决方法,采用全自动气相色谱仪+ 火焰离子检测器(auto GC-FID),对在气态和液态样品 中的浓度为痕量和超痕量的多达59 种挥发性有机物(VOCs)组分(包括苯系物)进行种类定性和定量。 采用的吹扫捕集技术用于从液相中汲取有代表性的化合物。该系统已在江苏省某水中挥发性有机物监 测项目中得到应用。

关键词: 仪器, 气相色谱, 火焰离子检测器, 吹扫捕集法, 挥发性有机物, 苯系物, 连续监 测, 液相分析, 地表水质量监测

Abstract: Volatile Organic Compounds (VOCs) such as benzene, toluene, ethylbenzene and xylene isomers (BTEX) mainly from anthropogenic sources. The water solubility and polarity parameters of VOCs make them highly likely to pollute groundwater. People can therefore be exposed to VOCs through contaminated drinking water. Accurate and continuous monitoring and quantification of VOCs in aquatic matrices is critical to improve the understanding of the exposure to toxicants, and hence improve people’s safety. Their concentration determination is also essential to stay in compliance with regulations. In this study, we present an efficient method for the speciation and quantification of up to 59 VOCs including BTEX in gaseous and liquid samples without interference, at trace and ultra-trace levels by gas chromatography using flame ionization detector (auto-GCFID). Purge and trap technique were used to extract representative compounds from the liquid phase. This system was developed to perform the analysis of VOCs in water samples of Jiangsu Province.

Key words: instrument, gas chromatography, flame ionization detector, purge-and-trap, volatile organic compounds/VOCs, BTEX, continuous monitoring, liquid phase analysis, surface water quality monitoring