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Field investigation on the removal of formaldehyde in indoor air

机译：去除室内空气中甲醛的现场调查

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摘要

The development of indoor air quality models requires to take into account the indoor removal processes (or "indoor sinks") as accurately as the indoor concentrations. Field experiments were conducted in residential rooms to assess the indoor decay rate constant and deposition velocity of formaldehyde and to investigate the nature of these removal processes. The indoor decay rate constant and deposition velocity were respectively found to 0.34 ± 0.07 h~(-1) and (2.53 ± 0.51) × 10~(-3) cm s~(-1), indicating a high potential of depletion and therefore a low persistence of this compound in indoor environment. Considering only the impact of indoor sinks, a short indoor half-life of 2 h for formaldehyde was assessed. This high removal of formaldehyde indoors in comparison with other volatile organic compounds and its dependence with the absolute humidity suggest that the adsorption on the indoor surfaces is not the only loss process for formaldehyde. The transfer of formaldehyde to the aqueous films present onto the indoor surfaces and on the surface of airborne particles was proposed as a possible removal pathway in real indoor conditions and discussed.
机译：室内空气质量模型的开发需要与室内浓度一样准确地考虑室内去除过程（或“室内水槽”）。在住宅房间中进行了现场试验，以评估室内的衰减速率常数和甲醛的沉积速度，并研究这些去除过程的性质。室内衰变速率常数和沉积速度分别为0.34±0.07 h〜（-1）和（2.53±0.51）×10〜（-3）cm s〜（-1），表明耗竭潜力很大，因此该化合物在室内环境中的持久性较低。仅考虑室内水槽的影响，评估了甲醛在2小时内的短室内半衰期。与其他挥发性有机化合物相比，室内甲醛的这种高去除率及其对绝对湿度的依赖性表明，室内表面的吸附并不是甲醛的唯一损失过程。甲醛转移到存在于室内表面和空气中颗粒表面的水膜中被认为是在实际室内条件下可能的去除途径，并进行了讨论。

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  • 来源
    《Building and Environment》 |2013年第12期|277-283|共7页
  • 作者

    H. Plaisance; A. Blondel; V. Desauziers; P. Mocho;

  • 作者单位

    University Lille Nord de France, F-59000 Lille, France,Ecole des Mines de Douai, Dipartement Chimie et Environnement, 941 rue Charles Bourseul, BP 10838, 59508 Douai cedex, France,Pole RIME C2MA, Ecole des Mines d'Alees, Helioparc, 2 Avenue Pierre Angot, 64053 Pau Cedex 9, France;

    University Lille Nord de France, F-59000 Lille, France,Ecole des Mines de Douai, Dipartement Chimie et Environnement, 941 rue Charles Bourseul, BP 10838, 59508 Douai cedex, France;

    Pole RIME C2MA, Ecole des Mines d'Alees, Helioparc, 2 Avenue Pierre Angot, 64053 Pau Cedex 9, France;

    Laboratoire Thermique Energetique et Precedes, Universite de Pau et des Pays de VAdour, BP 7511, 64075 Pau, France;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Indoor air; Formaldehyde; Volatile organic compounds; Indoor sinks; Sorption; Building materials;

    机译：室内空气甲醛;挥发性有机化合物;室内水槽;吸附;建筑材料;

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