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首页> 外文期刊>Atmospheric environment >Design and application of a novel integrated microsampling system for simultaneous collection of gas- and particle-phase semivolatile organic compounds
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Design and application of a novel integrated microsampling system for simultaneous collection of gas- and particle-phase semivolatile organic compounds

机译：同时收集气相和颗粒相半挥发性有机化合物的新型集成微量进样系统的设计和应用

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摘要

An integrated microsampling approach based on active microextraction was developed to study semi volatile organic compounds (SVOCs). This microsampling system included an in-tube hollow-fiber solid phase microextraction device in combination with a sorbent tube that can be applied in parallel to collect gas- and particle-phase SVOCs. The preparation procedure, theory, and application of two devices were characterized and validated by the single fiber theory and scanning mobility particle sizer experiments. The influence of the optimization parameters (sampling time, flow rate, and breakthrough volume) on the extraction process was studied in detail. The performance of the system was tested via simultaneous collection of a range of gas and particle samples of ethylbenzene, xylenes, n-alkanes, polycyclic aromatic hydrocarbons, and monoterpenes. The collection efficiencies of the two devices were more than 90% for most target compounds. Typically, relative standard deviation values in the range 2-6% were obtained, depending on the compound. The calibration curves for each compound were reproducible and linear over the concentration ranges normally found in atmospheric samples. Both devices were used to collect ambient air samples during a haze period and performed well in the extraction of both gas- and particle phase SVOCs at the ng m(-3) levels. The results from phase studies were used for further evaluation of the gas/particle partitioning of SVOCs. Application of this integrated microsampling system in the field validated its use as a simple, rapid, reusable, and cost-effective screening tool. (C) 2016 Elsevier Ltd. All rights reserved.
机译：开发了一种基于主动微萃取的集成微量采样方法来研究半挥发性有机化合物（SVOC）。该微量采样系统包括管内中空纤维固相微萃取装置和可并行应用以收集气相和颗粒相SVOC的吸附剂管。通过单纤维理论和扫描迁移率粒度仪实验对两种设备的制备过程，理论和应用进行了表征和验证。详细研究了优化参数（采样时间，流速和突破体积）对萃取过程的影响。通过同时收集一系列乙苯，二甲苯，正烷烃，多环芳烃和单萜烯的气体和颗粒样品，测试了系统的性能。对于大多数目标化合物，这两种设备的收集效率均超过90％。通常，取决于化合物，获得的相对标准偏差值在2-6％的范围内。在大气样品中通常发现的浓度范围内，每种化合物的校准曲线均具有可再现性和线性。两种设备均用于在雾霾时期收集环境空气样品，并且在ng m（-3）浓度的气相和颗粒相SVOC提取中均表现出色。相研究的结果用于进一步评估SVOC的气体/颗粒分配。这种集成的微采样系统在现场的应用证实了其作为一种简单，快速，可重复使用且具有成本效益的筛选工具的使用。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Atmospheric environment》 |2017年第1期|1-11|共11页
  • 作者

    Xu Tingting; Jiang Li; Yang Xin; Chen Jianmin; Cheng Tiantao; Li Xiang;

  • 作者单位

    Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Prev, Shanghai 200032, Peoples R China;

    Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Prev, Shanghai 200032, Peoples R China;

    Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Prev, Shanghai 200032, Peoples R China;

    Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Prev, Shanghai 200032, Peoples R China;

    Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Prev, Shanghai 200032, Peoples R China;

    Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Prev, Shanghai 200032, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Semivolatile organic compounds; In-tube hollow-fiber solid-phase microextraction device; Sorbent tube; Gas/particle partitioning; Collection efficiency;

    机译：半挥发性有机化合物;管内中空纤维固相微萃取装置;吸附管;气体/颗粒分配;收集效率;

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