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首页> 外文期刊>Environmental Science & Technology >Current Challenges in Air Sampling of Semivolatile Organic Contaminants: Sampling Artifacts and Their Influence on Data Comparability
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Current Challenges in Air Sampling of Semivolatile Organic Contaminants: Sampling Artifacts and Their Influence on Data Comparability

机译：半挥发性有机污染物空气采样中的当前挑战：采样伪影及其对数据可比性的影响

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摘要

With current science and policy needs, more attention is being given to expanding and improving air sampling of semivolatile organic contaminants (SVOCs). However, a wide range of techniques and configurations are currently used (active and passive samplers, different deployment times, different sorbents, etc.) and as the SVOC community looks to assess air measurements on a global scale, questions of comparability arise. We review current air sampling techniques, with a focus on sampling artifacts that can lead to uncertainties or biases in reported concentrations, in particular breakthrough, degradation, meteorological influences, and assumptions regarding passive sampling. From this assessment, we estimate the bias introduced for SVOC concentrations from all factors. Due to the effects of breakthrough, degradation, particle fractions and sampler uptake periods, some current passive and active sampler configurations may underestimate certain SVOCs by 30-95%. We then recommend future study design, appropriateness of sampler types for different study goals, and finally, how the SVOC community should move forward in both research and monitoring to best achieve comparability and consistency in air measurements.
机译：根据当前的科学和政策需求，人们将更加关注扩大和改进对半挥发性有机污染物（SVOC）的空气采样。但是，当前使用了各种各样的技术和配置（主动和被动采样器，不同的部署时间，不同的吸附剂等），并且随着SVOC社区希望在全球范围内评估空气测量，出现了可比性问题。我们回顾当前的空气采样技术，重点关注可能导致所报告浓度的不确定性或偏差的采样伪像，尤其是突破，退化，气象影响以及有关被动采样的假设。通过该评估，我们可以从所有因素估算出SVOC浓度的偏差。由于突破，降解，颗粒分数和采样器吸收时间的影响，一些当前的被动和主动采样器配置可能会使某些SVOC低估30-95％。然后，我们建议未来的研究设计，适用于不同研究目标的采样器类型的适用性，以及最后，SVOC界应如何在研究和监测方面继续前进，以最好地实现空气测量的可比性和一致性。

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  • 来源
    《Environmental Science & Technology》 |2014年第24期|14077-14091|共15页
  • 作者

    Lisa Melymuk; Pernilla Bohlin; Ondrej Sanka; Karla Pozo; Jana Klanova;

  • 作者单位

    Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Kamenice 5/753, Pavilon A29, Brno 62500, Czech Republic;

    Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Kamenice 5/753, Pavilon A29, Brno 62500, Czech Republic;

    Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Kamenice 5/753, Pavilon A29, Brno 62500, Czech Republic;

    Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Kamenice 5/753, Pavilon A29, Brno 62500, Czech Republic;

    Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Kamenice 5/753, Pavilon A29, Brno 62500, Czech Republic;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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  • 正文语种 eng
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