Comparison of the predicted concentration of outdoor originated indoor polycyclic aromatic hydrocarbons between a kinetic partition model and a linear instantaneous model for gas-particle partition
Comparison of the predicted concentration of outdoor originated indoor polycyclic aromatic hydrocarbons between a kinetic partition model and a linear instantaneous model for gas-particle partition
复制标题
气体-颗粒分配的动力学分配模型和线性瞬时模型之间室外来源的室内多环芳烃的预测浓度的比较
DOI：
10.1016/j.atmosenv.2012.05.007
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发表时间：
2012-11-01
影响因子：
5
通讯作者：
Zhao, Bin
中科院分区：
文献类型：
--
作者：
Shi, Shanshan;Zhao, Bin
多环芳烃（PAHs）可通过渗透或通风进入室内环境，导致人体暴露。本研究提出了一种动力学分区模型，用于预测室内PAH浓度是室外起源。该模型进行了验证与以前发表的测量室中进行。采用动力学分配模型计算了美国环保署（EPA）列为优先污染物的16种多环芳烃（PAHs）在室内两年的气相、颗粒相和空气中的浓度（气相和颗粒相浓度之和）。预测的浓度进行了比较，使用一个简单的线性瞬时模型计算。进一步分析了参数不确定性对两种模型预测结果差异的不确定性。对于某些多环芳烃，动力学分配模型和线性瞬时模型预测的室内气相和颗粒相多环芳烃浓度存在显著差异。气相中多环芳烃的平均相对差异在3.60 × 10 ~（-6）~ 6.31 × 10 ~（-1）之间，颗粒相中多环芳烃的平均相对差异在5.47 × 10 ~（-2）~ 9.15 × 10 ~（-1）之间。然而，预测的空气中浓度之间没有明显的平均相对差异，最大值为6.52 x 10（-2）。当颗粒沉积速率达到最大值时，气相和颗粒相多环芳烃的平均相对差异甚至更大。(C)2012爱思唯尔有限公司保留所有权利。
Polycyclic aromatic hydrocarbons (PAHs) of outdoor origin can enter indoor environment via infiltration or ventilation, and lead to human exposure. This study presents a kinetic partition model for the prediction of indoor PAH concentrations that are of outdoor origin. The model was verified with the previous published measurement conducted in a chamber. Indoor gas-phase, particle-phase and airborne concentrations (the sum of the gas- and particle-phases concentrations) of 16 species of PAHs listed by United States Environmental Protection Agency (EPA) as priority pollutants were calculated over a two-year period by the kinetic partition model. The predicted concentrations were compared with those calculated using a simple linear instantaneous model. Uncertainty in the differences between the predicted results by these two models caused by uncertain parameters was further conducted. For some PAHs, remarkable differences existed between the predicted indoor gas- and particle-phases concentrations of outdoor originated PAHs by the kinetic partition model and by the linear instantaneous model. The average relative differences of gas-phase PAHs ranged from 3.60 x 10(-6) to 6.31 x 10(1) while those of particle-phase PAHs were between 5.47 x 10(-2) and 9.15 x 10(-1). However, there was no obvious average relative difference between the predicted airborne concentrations, which maximized to 6.52 x 10(-2). The average relative differences for both the gas- and particle-phases PAHs were even larger when particle deposition rate was at its maximum. (C) 2012 Elsevier Ltd. All rights reserved.