School of Geography, Earth, and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK.
Chemicals Evaluation and Research Institute, Japan (CERI), 1600 Shimotakano, Sugito-machi 345-0043, Japan.
Sci Total Environ. 2016 Mar 1;545-546:77-83. doi: 10.1016/j.scitotenv.2015.12.054. Epub 2015 Dec 31.
Hexabromocyclododecanes (HBCDs) are a class of brominated flame retardant that have found extensive application in consumer products used widely in indoor environments. Although uncertainty remains about the human health impacts of HBCDs, ingestion of HBCD-contaminated indoor dust has been shown to be a particularly significant exposure pathway for young children. Despite this, understanding of the mechanisms via which HBCD transfer from products to indoor dust remains incomplete. In this study, an in-house test chamber was used to investigate transfer of HBCDs from a treated textile sample to indoor dust via direct textile:dust contact. Results were compared with previous data using the same test chamber to examine other pathways via which HBCDs transfer from products to dust, and highlighted HBCD transfer via direct source:dust contact as being particularly important. This novel finding was corroborated by complementary experiments that examined HBCD transfer via direct contact, from other treated textiles to three major components of indoor dust: artificial indoor dust, soil particles, and cotton linters.
六溴环十二烷（HBCDs）是一类溴化阻燃剂，已广泛应用于室内环境中使用的消费品。尽管 HBCDs 对人类健康的影响仍存在不确定性，但摄入受 HBCD 污染的室内灰尘已被证明是幼儿特别重要的暴露途径。尽管如此，对于 HBCD 从产品转移到室内灰尘的机制的理解仍不完整。在这项研究中，使用室内测试室通过直接的纺织品-灰尘接触来研究 HBCDs 从处理过的纺织品样品转移到室内灰尘的情况。结果与使用相同测试室研究 HBCDs 从产品转移到灰尘的其他途径的先前数据进行了比较，并强调了 HBCD 通过直接源-灰尘接触的转移特别重要。这一新颖的发现得到了补充实验的证实，这些实验考察了 HBCDs 通过直接接触从其他处理过的纺织品转移到室内灰尘的三个主要成分：人造室内灰尘、土壤颗粒和棉花绒。
