Building Energy and Environmental Systems Laboratory (BEESL), Department of Mechanical and Aerospace Engineering, Syracuse University, Syracuse, NY 13244, USA.
Indoor Air. 2010 Aug;20(4):341-54. doi: 10.1111/j.1600-0668.2010.00662.x. Epub 2010 Apr 17.
The objectives of this study were to determine volatile organic compound (VOC) emission signatures of nine typical building materials by using proton transfer reaction-mass spectrometry (PTR-MS) and to explore the correlation between the PTR-MS measurements and the measurements of acceptability by human subjects. VOC emissions from each material were measured in a 50-l small-scale chamber. Chamber air was sampled by PTR-MS to determine emission signatures. Sorbent tube sampling and TD-GC/MS analysis were also performed to identify the major VOCs emitted and to compare the resulting data with the PTR-MS emission signatures. The data on the acceptability of air quality assessed by human subjects were obtained from a previous experimental study in which the emissions from the same batch of materials were determined under the same area-specific ventilation rates as in the case of the measurements with PTR-MS. Results show that PTR-MS can be an effective tool for establishing VOC emission signatures of material types and that there were reasonable correlations between the PTR-MS measurements and the acceptability of air quality for the nine materials tested when the sum of selected major individual VOC odor indices was used to represent the emission level measured by PTR-MS.
The study shows that unique emission patterns may exist for different types of building materials. These patterns, or signatures, can be established by using PTR-MS, an online monitoring device. The sum of selected major individual VOC odor indices determined by PTR-MS correlates well with the acceptability of air quality assessed by human subjects, and hence provides a feasible approach to assessing perceived indoor air quality. This online assessment will open a new gate in understanding the role of VOC emissions from building materials on perceived air quality, forming a good foundation to develop real-time or near real-time methods for standard material emission testing and labeling, quality control of emissions from materials, and assessing the acceptability of air quality in buildings.
本研究的目的是通过质子转移反应质谱（PTR-MS）确定九种典型建筑材料的挥发性有机化合物（VOC）排放特征，并探讨 PTR-MS 测量值与人体可接受性测量值之间的相关性。在 50 升小型室中测量每种材料的 VOC 排放。通过 PTR-MS 对腔室空气进行采样以确定排放特征。还进行了吸附管采样和 TD-GC/MS 分析，以确定主要排放的 VOC，并将得到的数据与 PTR-MS 排放特征进行比较。关于通过人体评估空气质量的可接受性的数据来自之前的一项实验研究，在该研究中，在与 PTR-MS 测量相同的特定面积通风率下，确定了同一批材料的排放。结果表明，PTR-MS 可以成为建立材料类型 VOC 排放特征的有效工具，并且当使用 PTR-MS 测量的排放水平代表时，所选主要单个 VOC 气味指数的总和来表示，PTR-MS 测量值与九种测试材料的空气质量可接受性之间存在合理的相关性。
该研究表明，不同类型的建筑材料可能存在独特的排放模式。这些模式或特征可以通过在线监测设备 PTR-MS 来建立。通过 PTR-MS 确定的所选主要单个 VOC 气味指数的总和与人体评估的空气质量可接受性密切相关，因此为评估感知室内空气质量提供了一种可行的方法。这种在线评估将在理解建筑材料 VOC 排放对感知空气质量的作用方面开辟新的途径，为开发实时或近实时的标准材料排放测试和标签方法、材料排放的质量控制以及评估建筑物内空气质量的可接受性奠定良好基础。
