International Joint Research Center for Persistent Toxic Substances, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China.
Key Laboratory of Microbial Technology for Industrial Pollution Control of Zhejiang Province, Zhejiang University of Technology, Hangzhou, 310014, China.
Environ Monit Assess. 2019 Feb 19;191(3):170. doi: 10.1007/s10661-019-7303-9.
The emissions of brominated flame retardants (BFRs) from consumer products have been considered the major to the ubiquitous occurrence of contaminants in indoor environments. Direct contact with dust covering the surface of source materials in a real environment could introduce significant uncertainty. This study investigated the effects of dust coverage on the emissions of four BFRs, including 1, 2, 5, 6, 9, and 10-hexabromocyclododecane (HBCD), bis(2-ethyl-1-hexyl) tetrabromophthalate (BEHTBP), tetrabromobisphenol A (TBBPA), and hexabromobenzene (HBBZ), from decorative laminate, cotton sound insulation, PVC floor, and carpet. Direct contact with dust was confirmed to increase the total emissions by 30.8-98.1% compared with the emissions in the non-dust group. The emissions of HBCD, TBBPA, and HBBZ from cotton sound insulation were obviously enhanced by dust with smaller particles but did not linearly increase along with the dust amounts. Thus, these findings have practical implications in that the frequent removal of dust could be important to minimize the exposure risk from indoor emissions of BFRs.
消费品释放的溴化阻燃剂（BFRs）被认为是造成室内环境中普遍存在污染物的主要原因。在真实环境中，直接接触覆盖源材料表面的灰尘可能会带来显著的不确定性。本研究调查了灰尘覆盖对四种 BFRs（包括 1,2,5,6,9,10-六溴环十二烷（HBCD）、双（2-乙基-1-己基）四溴邻苯二甲酸酯（BEHTBP）、四溴双酚 A（TBBPA）和六溴苯（HBBZ））从装饰层压板、棉质隔音材料、聚氯乙烯地板和地毯中的排放的影响。与无灰尘组相比，直接接触灰尘会使总排放量增加 30.8-98.1%。棉质隔音材料中 HBCD、TBBPA 和 HBBZ 的排放量显然因粒径较小的灰尘而增加，但不会随灰尘量线性增加。因此，这些发现具有实际意义，因为频繁清除灰尘可能对最大限度地降低室内 BFRs 排放造成的暴露风险很重要。
