National Research Centre for Environmental Toxicology, The University of Queensland, 39 Kessels Road, Coopers Plains, QLD 4108, Australia.
Ecotoxicol Environ Saf. 2013 Jun;92:222-8. doi: 10.1016/j.ecoenv.2013.02.013. Epub 2013 Mar 15.
Increased levels of polybrominated diphenyl ethers (PBDEs) can occur particularly in dust and soil surrounding facilities that recycle products containing PBDEs. This may be the source of increased exposure for nearby workers and residents. To investigate, we measured PBDE levels in soil, office dust and blood of workers at the closest workplace (i.e. within 100m) to a large automotive shredding and metal recycling facility in Brisbane, Australia. The workplace investigated in this study was independent of the automotive shredding facility and was one of approximately 50 businesses of varying types within a relatively large commercial/industrial area surrounding the recycling facility. Concentrations of PBDEs in soils were at least an order of magnitude greater than background levels in the area. Congener profiles were dominated by larger molecular weight congeners; in particular BDE-209. This reflected the profile in outdoor air samples previously collected at this site. Biomonitoring data from blood serum indicated no differential exposure for workers near the recycling facility compared to a reference group of office workers, also in Brisbane. Unlike air, indoor dust and soil sample profiles, serum samples from both worker groups were dominated by congeners BDE-47, BDE-153, BDE-99, BDE-100 and BDE-183 and was similar to the profile previously reported in the general Australian population. Estimated exposures for workers near the industrial point source suggested indoor workers had significantly higher exposure than outdoor workers due to their exposure to indoor dust rather than soil. However, no relationship was observed between blood PBDE levels and different roles and activity patterns of workers on-site. These comparisons of PBDE levels in serum provide additional insight into the inter-individual variability within Australia. Results also indicate congener patterns in the workplace environment did not match blood profiles of workers. This was attributed to the relatively high background exposures for the general Australian population via dietary intake and the home environment.
多溴二苯醚 (PBDEs) 的水平升高尤其可能发生在回收含有 PBDEs 的产品的设施周围的灰尘和土壤中。这可能是附近工人和居民接触增加的来源。为了进行调查，我们测量了澳大利亚布里斯班一家大型汽车拆解和金属回收设施最近的工作场所（即距离 100 米以内）的工人的土壤、办公室灰尘和血液中的 PBDE 水平。本研究中调查的工作场所与汽车拆解设施无关，是该回收设施周围相对较大的商业/工业区域内大约 50 家不同类型企业之一。土壤中的 PBDE 浓度至少比该地区的背景水平高一个数量级。同系物分布以较大分子量的同系物为主；特别是 BDE-209。这反映了之前在该地点收集的室外空气样本中的分布情况。来自血清的生物监测数据表明，与回收设施附近的工人相比，布里斯班的办公室工作人员的接触没有差异。与空气不同，室内灰尘和土壤样本的分布情况一样，两组工人的血清样本都以 BDE-47、BDE-153、BDE-99、BDE-100 和 BDE-183 为主，与之前在澳大利亚普通人群中报告的分布情况相似。对工业点源附近工人的估计接触表明，由于室内工人接触室内灰尘而不是土壤，因此他们的暴露水平明显高于室外工人。然而，没有观察到血液中 PBDE 水平与现场工人的不同角色和活动模式之间的关系。这些对血清中 PBDE 水平的比较提供了对澳大利亚个体内变异的额外了解。结果还表明，工作场所环境中的同系物模式与工人的血液分布不匹配。这归因于澳大利亚普通人群通过饮食摄入和家庭环境对 PBDE 的背景暴露较高。
