Airborne particle-bound brominated flame retardants: Levels, size distribution and indoor-outdoor exchange.
Airborne particle-bound brominated flame retardants: Levels, size distribution and indoor-outdoor exchange.
复制标题
空气中颗粒结合的溴化阻燃剂：含量、尺寸分布和室内外交换。
DOI：
10.1016/j.envpol.2017.10.013
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发表时间：
2018-02
影响因子：
8.9
通讯作者：
Hui Zeng
中科院分区：
文献类型：
--
作者：
Yue-Shan Zhu;Wan-Dong Yang;Xiu-Wen Li;Hong-Gang Ni;Hui Zeng
室内环境质量对公众健康有重大影响。通常，室内环境被视为一个静态的盒子，室内空气污染物的物理化学反应可以忽略不计。这导致了对主要室内空气污染物浓度的保守估计，同时也忽略了二次污染物。因此，了解室内和室外颗粒物与颗粒物结合污染物之间的关系具有重要意义。为此，我们收集了室内和室外同时测量的空气中溴化阻燃剂(BFR)同系物的尺寸分布。然后用质量平衡模型估算了室内颗粒物和颗粒结合BFR随时间变化的浓度，考虑了室外浓度、室内源强度、入渗、渗透、沉积和室内再悬浮。在定性观察的基础上，Σ多溴二苯醚和Σ多溴联苯并二恶英的粒度分布呈现双峰特征。根据我们的结果，粒子结合的BDE209和γ-HBCD发生了降解。无论颗粒的表面吸附能力和目标化合物的物理化学性质如何，不同粒度的颗粒中BFR的浓度似乎都受颗粒分布的控制。根据我们的估计，对于空气中的颗粒物和颗粒结合的BFR，与关闭的房间相比，打开窗户的通风房间只需四分之一的时间就可以达到室内和室外污染物浓度之间的平衡。不幸的是，室内污染物和室外污染物总是同时存在，这就造成了实现适当通风的开窗或关窗的两难境地。
The quality of indoor environments has a significant impact on public health. Usually, an indoor environment is treated as a static box, in which physicochemical reactions of indoor air contaminants are negligible. This results in conservative estimates for primary indoor air pollutant concentrations, while also ignoring secondary pollutants. Thus, understanding the relationship between indoor and outdoor particles and particle-bound pollutants is of great significance. For this reason, we collected simultaneous indoor and outdoor measurements of the size distribution of airborne brominated flame retardant (BFR) congeners. The time-dependent concentrations of indoor particles and particle-bound BFRs were then estimated with the mass balance model, accounting for the outdoor concentration, indoor source strength, infiltration, penetration, deposition and indoor resuspension. Based on qualitative observation, the size distributions of ΣPBDE and ΣHBCD were characterized by bimodal peaks. According to our results, particle-bound BDE209 andγ-HBCD underwent degradation. Regardless of the surface adsorption capability of particles and the physicochemical properties of the target compounds, the concentration of BFRs in particles of different size fractions seemed to be governed by the particle distribution. Based on our estimations, for airborne particles and particle-bound BFRs, a window-open ventilated room only takes a quarter of the time to reach an equilibrium between the concentration of pollutants inside and outside compared to a closed room. Unfortunately, indoor pollutants and outdoor pollutants always exist simultaneously, which poses a window-open-or-closed dilemma to achieve proper ventilation.
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影响因子：
10.4
作者：
Levy JI;Hammitt JK;Spengler JD
通讯作者：
Spengler JD
影响因子：
8.9
作者：
Hyeyeong Jo;Min-Hui Son;Sung-Hee Seo;Yoon-Seok Chang
通讯作者：
Hyeyeong Jo;Min-Hui Son;Sung-Hee Seo;Yoon-Seok Chang
影响因子：
10.4
作者：
Betts KS
通讯作者：
Betts KS
影响因子：
8.9
作者：
Jianqiang Sun;Qianwen Wang;Shulin Zhuang;Anping Zhang
通讯作者：
Jianqiang Sun;Qianwen Wang;Shulin Zhuang;Anping Zhang
影响因子：
5.8
作者：
K. Kefeni;J. Okonkwo
通讯作者：
K. Kefeni;J. Okonkwo