直流舱测定材料VOC散发关键参数的浓度轨迹法

doi:10.11949/j.issn.0438-1157.20150301

化工学报 ›› 2015, Vol. 66 ›› Issue (S1): 314-318.DOI: 10.11949/j.issn.0438-1157.20150301

直流舱测定材料VOC散发关键参数的浓度轨迹法

杨韬¹, 熊建银¹, 郝玲²

1 北京理工大学机械与车辆学院, 北京 100081;
2 中国中建设计集团有限公司, 北京 100036

收稿日期:2015-03-11 修回日期:2015-03-21 出版日期:2015-06-30 发布日期:2015-06-30
通讯作者: 熊建银
基金资助:
国家自然科学基金项目 (51106011, 51476013)。

Measuring key emission parameters of VOC from materials based on concentration trajectory in ventilated chamber

YANG Tao¹, XIONG Jianyin¹, HAO Ling²

1 School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China;
2 China Construction Engineering Design Group Corporation Limited, Beijing 100036, China

Received:2015-03-11 Revised:2015-03-21 Online:2015-06-30 Published:2015-06-30
Supported by:
supported by the National Natural Science Foundation of China (51106011, 51476013).

摘要/Abstract

摘要：

室内及车内环境中材料散发的挥发性有机化合物(VOC)是造成空气品质低劣的重要因素之一, 显著影响着人们的舒适度和身体健康。材料VOC散发特性由3个关键参数表征:初始可散发浓度C₀、扩散系数D_m和分配系数K。测定上述散发关键参数是研究材料VOC散发规律进而预测人体暴露和健康风险的基础。基于目前应用最广泛的直流舱中材料VOC的散发过程, 提出了同时测定C₀和D_m的浓度轨迹法。该方法通过预设K值, 然后对环境舱浓度的对数进行线性拟合, 根据斜率和截距获得关键参数C₀和D_m。敏感性分析表明, 不同的K值对测定的C₀和D_m值影响很小。通过对文献中的直流舱散发实验数据进行处理, 结果表明该测定方法具有较高的精度。

关键词: 环境, 散发, 有机化合物, 关键参数, 直流舱, 敏感性分析

Abstract:

Volatile organic compounds (VOCs) emitted from materials in indoor and vehicle environment is one of the main factors causing poor air quality and obviously affects people's comfort and health. The emission behaviors of VOC from materials are characterized by three key parameters, i.e., the initial emittable concentration (C₀), the diffusion coefficient (D_m) and the partition coefficient (K). Determination of the above key parameters is the foundation of researches for emission laws of VOC from materials as well as prediction for human exposure and health risks. Based on the most widely used VOC emission process in ventilated chamber at present, this paper proposes a novel method to simultaneously determine C₀ and D_m. By assuming an initial value for K and then performing the linear curving fitting for the logarithm of chamber concentration, the key parameters C₀ and D_m can be obtained from the slope and intercept of the fitting results. As is shown in sensitivity analysis, the variety of K has little effect on the determination of C₀ and D_m. By the virtue of the treatment for experimental data of ventilated chamber tests in literature, it is demonstrated that the proposed method has a relatively high accuracy.

Key words: environment, emission, organic compounds, key parameters, ventilated chamber, sensitivity analysis

中图分类号:

TQ021.4

杨韬, 熊建银, 郝玲. 直流舱测定材料VOC散发关键参数的浓度轨迹法[J]. 化工学报, 2015, 66(S1): 314-318.

YANG Tao, XIONG Jianyin, HAO Ling. Measuring key emission parameters of VOC from materials based on concentration trajectory in ventilated chamber[J]. CIESC Journal, 2015, 66(S1): 314-318.

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直流舱测定材料VOC散发关键参数的浓度轨迹法

Measuring key emission parameters of VOC from materials based on concentration trajectory in ventilated chamber

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