International Joint Research Center for Persistent Toxic Substances, College of Environment, Zhejiang University of Technology, Hangzhou, 310014, China.
Environ Sci Pollut Res Int. 2018 Aug;25(24):24201-24209. doi: 10.1007/s11356-018-2494-0. Epub 2018 Jun 12.
The ubiquitous presence of brominated flame retardants (BFRs) in indoor air, dust, and even in human tissue could be attributed to their emissions from BFR-containing products. Nevertheless, the emission behavior of BFRs, especially novel BFRs from consumer materials, to the indoor environment has still not been well understood. To evaluate the effects of chemical content, temperature, and time on the emissions of BFRs, we used a batch of small glass chambers to conduct emission tests on carpet, computer casings, sound insulation, circuit boards, decorative laminate, and PVC floors at temperatures from 20 to 80 °C, as well as different emission times of up to 35 days. Seven BFRs were extracted from the tested materials with contents ranging from 50 to 35,803 μg g, and four BFRs were detected with emission rates between 5.9 and 418 pg g h at room temperature (20 °C); 1,2,5,6,9,10-hexabromocyclododecane (HBCD) was considered to be the dominant compound, which was found in and could be emitted from all of the tested materials. Emission rates are significantly and positively correlated with both the contents of tested materials and the elevated temperature. These results indicate that BFR-containing products have the potential to be a major source of indoor contamination.
溴化阻燃剂（BFRs）在室内空气、灰尘，甚至在人体组织中普遍存在，这可能是由于它们从含有 BFR 的产品中排放出来的。然而，BFR 特别是来自消费材料的新型 BFR 对室内环境的排放行为仍未得到很好的理解。为了评估化学物质含量、温度和时间对 BFRs 排放的影响，我们使用一批小玻璃室在 20 至 80°C 的温度下以及最长达 35 天的不同排放时间对地毯、电脑外壳、隔音材料、电路板、装饰层压板和 PVC 地板进行了排放测试。从测试材料中提取了七种 BFR，含量范围为 50 至 35,803μg/g，在室温（20°C）下检测到四种 BFR 的排放率在 5.9 至 418pg/g·h 之间；1,2,5,6,9,10-六溴环十二烷（HBCD）被认为是主要化合物，在所有测试材料中都存在并可以排放。排放率与测试材料的含量和升高的温度呈显著正相关。这些结果表明，含有 BFR 的产品有可能成为室内污染的主要来源。
