School of Geography, Earth, and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK; Division of Ecology, College of Science, University of Basrah, Basrah, Iraq.
School of Geography, Earth, and Environmental Sciences, University of Birmingham, Birmingham, B15 2TT, UK.
Chemosphere. 2017 Jul;178:51-58. doi: 10.1016/j.chemosphere.2017.02.096. Epub 2017 Feb 22.
The study investigates the impact of sampling method on the concentrations of PBDEs (BDE-28, BDE-47, BDE-99, BDE-100, BDE-153, BDE-154, BDE-183, and BDE-209) and NBFRs (PBEB, EH-TBB, BEH-TEBP, BTBPE and DBDPE) in indoor dust. A total of 36 dust samples were collected from 12 homes in Birmingham, UK (3 samples per home comprising researcher collected dust - both RCD from the living room (RCDL) and bedroom (RCDB), with an additional householder vacuum dust sample - HHVD). BDE-209 was the predominant compound, with average concentrations of 2642, 2336 and 2634 ng/g in RCDL, RCDB and HHVD respectively. The next most abundant BFR was BEH-TEBP, followed by DBDPE, with average concentrations of 306, 339 and 233 ng/g for BEH-TEBP and 155, 91 and 152 ng/g for DBDPE in RCDL, RCDB and HHVD respectively. Average concentrations of Σtri-hexa-BDEs were 47, 41, and 24 ng/g in RCDL, RCDB and HHVD respectively. With the exception of Σtri-hexa-BDEs, BDE-153, BDE-99 and to some extent BEH-TEBP, no significant differences were found between BFR concentrations in RCD and HHVD. Statistically significant correlations were observed between concentrations of Σtri-hexa-BDEs, BEH-TEBP and DBDPE in HHVD and in both RCDL and RCDB. However, comparison of estimates of exposure via dust ingestion based on these two sampling methods revealed that using householder vacuum dust underestimates exposure, particularly for Σtri-hexa-BDEs, and to some extent for BEH-TEBP. In contrast, HHVD could be a viable alternative to RCD as a metric of exposure for higher brominated BFRs.
本研究调查了采样方法对室内灰尘中 PBDEs（BDE-28、BDE-47、BDE-99、BDE-100、BDE-153、BDE-154、BDE-183 和 BDE-209）和 NBFRs（PBEB、EH-TBB、BEH-TEBP、BTBPE 和 DBDPE）浓度的影响。从英国伯明翰的 12 户家庭中收集了 36 个灰尘样本（每个家庭 3 个样本，包括研究人员收集的灰尘-客厅（RCDL）和卧室（RCDB）的灰尘，以及房主真空吸尘样本- HHVD）。BDE-209 是主要的化合物，在 RCDL、RCDB 和 HHVD 中的平均浓度分别为 2642、2336 和 2634ng/g。其次是含量丰富的 BFR 是 BEH-TEBP，其次是 DBDPE，在 RCDL、RCDB 和 HHVD 中的平均浓度分别为 306、339 和 233ng/g 的 BEH-TEBP 和 155、91 和 152ng/g 的 DBDPE。Σ 三六溴环十二烷的平均浓度分别为 47、41 和 24ng/g 在 RCDL、RCDB 和 HHVD 中。除了 Σ 三六溴环十二烷、BDE-153、BDE-99 和在某种程度上 BEH-TEBP 之外，RCD 和 HHVD 之间的 BFR 浓度没有发现显著差异。在 HHVD 中，以及在 RCDL 和 RCDB 中，都观察到 Σ 三六溴环十二烷、BEH-TEBP 和 DBDPE 浓度之间存在显著的相关性。然而，基于这两种采样方法比较通过灰尘摄入估算的暴露量，结果表明使用房主真空吸尘会低估暴露量，特别是对于 Σ 三六溴环十二烷，在某种程度上也低估了 BEH-TEBP。相比之下，HHVD 可以作为 RCD 的替代方法，作为更高溴化 BFR 的暴露指标。
