色谱 ›› 2014, Vol. 32 ›› Issue (9): 906-912.DOI: 10.3724/SP.J.1123.2014.07045

• 特别策划:新型污染物色谱分析专栏 • 上一篇    下一篇

大气颗粒物中有机物色谱分析的样品制备技术

郝亮1,2, 吴大朋1, 关亚风1   

  1. 1. 中国科学院大连化学物理研究所, 辽宁 大连 116023;
    2. 中国科学院大学, 北京 100039
  • 收稿日期:2014-07-25 修回日期:2014-08-06 出版日期:2014-09-08 发布日期:2014-08-30
  • 通讯作者: 关亚风
  • 作者简介:关亚风,guanyafeng@dicp.ac.cn.
  • 基金资助:

    科技部“863计划”项目(2011AA060602).

Sample preparation methods for chromatographic analysis of organic components in atmospheric particulate matter

HAO Liang1,2, WU Dapeng1, GUAN Yafeng1   

  1. 1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
    2. University of Chinese Academy of Sciences, Beijing 100039, China
  • Received:2014-07-25 Revised:2014-08-06 Online:2014-09-08 Published:2014-08-30

摘要:

大气颗粒物中有机物成分分析对深入研究大气颗粒物对人类健康、环境、气候、生态的影响,解析气溶胶来源,制定颗粒物控制相关法规,以及风险管理方法具有重要意义。由于颗粒物中的有机组分种类繁多,分析复杂,目前仅10%~20%的有机物得到了定性和定量分析。因此,大气细颗粒中有机物的分析已成为环境分析领域的优先发展方向。色谱是大气颗粒物中有机物分析的主要方法,而样品制备则是影响分析速度和精度的关键步骤。本文对颗粒物中有机组分色谱分析前的样品制备方法进行了综述,介绍了索氏提取、超声辅助提取、微波辅助提取、加压溶剂提取等溶剂提取方法以及热解吸提取方法,并重点介绍了这些方法在大气颗粒物样品处理中的应用,总结了各种方法的优缺点。

关键词: 大气颗粒物, 色谱分析, 样品制备, 有机组分

Abstract:

The determination of organic composition in atmospheric particulate matter (PM) is of great importance in understanding how PM affects human health, environment, climate, and ecosystem. Organic components are also the scientific basis for emission source tracking, PM regulation and risk management. Therefore, the molecular characterization of the organic fraction of PM has become one of the priority research issues in the field of environmental analysis. Due to the extreme complexity of PM samples, chromatographic methods have been the chief selection. The common procedure for the analysis of organic components in PM includes several steps: sample collection on the fiber filters, sample preparation (transform the sample into a form suitable for chromatographic analysis), analysis by chromatographic methods. Among these steps, the sample preparation methods will largely determine the throughput and the data quality. Solvent extraction methods followed by sample pretreatment (e. g. pre-separation, derivatization, pre-concentration) have long been used for PM sample analysis, and thermal desorption methods have also mainly focused on the non-polar organic component analysis in PM. In this paper, the sample preparation methods prior to chromatographic analysis of organic components in PM are reviewed comprehensively, and the corresponding merits and limitations of each method are also briefly discussed.

Key words: atmospheric particulate matter, chromatographic analysis, organic components, sample preparation

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