Measurement of total volatile organic compound (TVOC) in indoor air using passive solvent extraction method
Measurement of total volatile organic compound (TVOC) in indoor air using passive solvent extraction method
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DOI：
10.1007/s11869-018-0639-4
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发表时间：
2019-02-01
影响因子：
5.1
通讯作者：
Hamada, Noriaki
中科院分区：
文献类型：
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作者：
Ishizaka, Takahiro D.;Kawashima, Ayato;Hamada, Noriaki
总挥发性有机化合物（TVOC）的测定是评价室内空气质量的有效方法。本研究旨在开发一种使用被动溶剂萃取法（SD_passive）测量TVOC的程序。比较了SD_passive和TD_active两种方法对TVOC的定量和定性性能。SD_passive法与TD_active法测定的TVOC浓度高度相关。然而，低于600 g/m3时，与TD_active方法相比，它们略被低估。这是因为在SD_passive方法中，特定挥发性有机化合物（VOCs）（如环硅氧烷和壬醛）的采样率（SR）低于用于计算TVOC浓度的甲苯，这些挥发性有机化合物经常在室内空气中检测到。因此，探索了使用适当SR的几种校正方法，以获得与使用TD_active方法获得的TVOC浓度相当的TVOC浓度。在所提出的方法中，单个SR用于特定的VOC，估计SR用于其他VOC，作为总离子色谱保留时间（Rt）的函数（SR=96，Rt
The measurement of total volatile organic compound (TVOC) is effective for evaluating indoor air quality. This study aimed to develop a procedure for TVOC measurement using a passive solvent extraction method (SD_passive). The quantitative and qualitative performances of SD_passive for TVOC measurement were compared to those of the active thermal desorption method (TD_active). TVOC concentrations of the SD_passive method were highly correlated with those of the TD_active method. However, below 600g/m(3), they were slightly underestimated compared to those of the TD_active method. This was because the sampling rates (SRs) of specific volatile organic compounds (VOCs), such as cyclic siloxane and nonanal, which are often detected in indoor air, were lower than those of toluene used for calculating TVOC concentration in the SD_passive method. Therefore, several correction methods using the appropriate SR were explored to obtain TVOC concentrations equivalent to those obtained using the TD_active method. In the proposed method, individual SRs were used for specific VOCs and estimated SRs were used for other VOCs as a function of the total ion chromatogram retention time (Rt) (SR=96, Rt