School of Environmental Science & Engineering, Hyoja-dong, Namgu, Pohang, Kyungbuk, South Korea.
Indoor Air. 2010 Jun;20(3):263-70. doi: 10.1111/j.1600-0668.2010.00652.x.
Polybrominated diphenyl ethers (PBDEs) are considered harmful to human health because of their toxicities and persistence in environments. In the current study, the distribution and fate of PBDEs in classrooms and computer rooms in 17 elementary schools in South Korea have been described. Eight congeners (brominated diphenyl ether-28, -47, -99, -100, -153, -154, -183, and -209) in air, floor dust, and product surface dust were measured. While Sigma(8)PBDEs in the air in classrooms showed considerable variations (0.659-1600 pg/m(3), arithmetic mean +/- s.d.: 377 +/- 441 pg/m(3)), those in computer rooms were somewhat similar (134-220 pg/m(3), arithmetic mean +/- s.d.: 169 +/- 40 pg/m(3)). Sigma(8)PBDEs in floor dust varied over a wide range, from 453 to 45,700 ng/g, for all rooms. Based on congener patterns, two groups were created--CL-1 that is dominated by high-brominated congeners and CL-2 primarily comprising low-brominated congeners--for both air and floor dust of classrooms. Surface dust had low concentrations, ranged from ND to 181, from ND to 128, and from ND to 256 pg/cm(2) for desk/chair sets, lockers, and playing tools, respectively. Pearson correlation coefficients were calculated individually for air, floor dust, and surface dust. The results indicate that both surface dust and floor dust may act as a secondary source of PBDEs in indoor environments after emission from facilities.
Children have been estimated to have a higher potential exposure to PBDEs than adults. Since children spend most of their day time at school, PBDE distributions in school environments should be a matter of great concern.
多溴二苯醚（PBDEs）因其毒性和在环境中的持久性而被认为对人类健康有害。本研究描述了韩国 17 所小学教室和计算机房内 PBDEs 的分布和归宿。在空气中、地板灰尘和产品表面灰尘中测量了 8 种同系物（溴化二苯醚-28、-47、-99、-100、-153、-154、-183 和-209）。教室空气中 Sigma(8)PBDEs 的含量变化较大（0.659-1600 pg/m3，算术平均值 +/- s.d.：377 +/- 441 pg/m3），而计算机房中则有些相似（134-220 pg/m3，算术平均值 +/- s.d.：169 +/- 40 pg/m3）。所有房间的地板灰尘中 Sigma(8)PBDEs 的含量范围都很广，从 453 到 45700 ng/g。基于同系物模式，为教室的空气和地板灰尘创建了两个组——CL-1 主要由高溴化同系物组成，CL-2 主要由低溴化同系物组成。桌面/椅子套装、储物柜和玩具的表面灰尘浓度较低，分别为 ND 至 181、ND 至 128 和 ND 至 256 pg/cm2。分别计算了空气、地板灰尘和表面灰尘的 Pearson 相关系数。结果表明，在设施排放后，表面灰尘和地板灰尘都可能成为室内环境中 PBDEs 的二次源。
儿童接触 PBDEs 的潜在风险估计比成人高。由于儿童大部分时间都在学校度过，因此学校环境中的 PBDEs 分布应引起高度关注。
