Han Wen-liang, Liu Yu, Chen Hai-ming, Chen Xing-tong, Fan Tao
Huan Jing Ke Xue. 2016 Mar 15;37(3):834-46.
Indoor dust was an important and even a major route of human exposure to polybrominated diphenyl ethers (PBDEs). However, the vacuum dust concentrations were less correlated with indoor residents' serum concentrations of PBDEs, thus inadequat for either estimation of human exposure dose or research of deposition flux and its seasonal variations. Passive sampling of indoo dustfall could offset these shortages. A total of 49 indoor sampling sites including homes, offices, computer rooms and furniture factor were selected in Xiamen, China to collect the four season dustfall samples with glass plates (walled by clean aluminum foil). Deposition flux, concentrations, congener profiles, seasonal variations, and human exposure to PBDEs in the dustfall were studied The geometric means of the yearly round deposition flux of ∑ PBDEs (sum of 16 BDE congeners including BDE-209) in homes offices, computer rooms and furniture factory were 6.1, 3.0, 1.1 and 179.8 ng · (m² · d)⁻¹, respectively. The geometric mea deposition flux of ∑ PBDEs in homes was 2 times of that in offices, but the concentration of ∑ PBDEs in the dustfall from home (445.5 ng · g⁻¹) was only slightly higher than that of offices (384.0 ng · g⁻¹). The ∑ PBDEs deposition flux in homes, offices and computer rooms in Xiamen were at lower level compared with other cities around the world. The PBDEs deposition flux in furnitur factory was much higher than that in the ordinary indoor environment. Autumn was the season with highest deposition flux of ∑ PBDEs. Geometric means of BDE- 209's proportion of the ∑ PBDEs in dustfall in all seasons in the four types of indoo environment were above 80% . The deposition flux of PBDEs was correlated to the dustfall deposition flux in homes, offices and computer rooms, but not that in furniture factory. ∑₁₅ PBDEs in homes and offices were significantly correlated with the age of computers, but not quantities of electrical and electronic products, furniture and interior decoration, etc. Indoor dust was a key route for human exposure to ∑ PBDEs, especially for higher brominated BDEs.
室内灰尘是人类接触多溴二苯醚（PBDEs）的一个重要甚至主要途径。然而，吸尘器收集的灰尘浓度与室内居民血清中PBDEs浓度的相关性较低，因此在估计人体暴露剂量或研究沉降通量及其季节变化方面并不充分。室内降尘的被动采样可以弥补这些不足。在中国厦门共选择了49个室内采样点，包括家庭、办公室、计算机房和家具厂，用玻璃板（用干净铝箔围挡）收集四季降尘样本。研究了降尘中PBDEs的沉降通量、浓度、同系物分布、季节变化以及人体暴露情况。家庭、办公室、计算机房和家具厂中∑PBDEs（包括BDE - 209在内的16种BDE同系物之和）的全年沉降通量几何均值分别为6.1、3.0、1.1和179.8 ng·(m²·d)⁻¹。家庭中∑PBDEs的沉降通量几何均值是办公室的2倍，但家庭降尘中∑PBDEs的浓度（445.5 ng·g⁻¹）仅略高于办公室（384.0 ng·g⁻¹）。厦门家庭、办公室和计算机房中∑PBDEs的沉降通量与世界其他城市相比处于较低水平。家具厂中PBDEs的沉降通量远高于普通室内环境。秋季是∑PBDEs沉降通量最高的季节。在四种室内环境中，各季节降尘中BDE - 209占∑PBDEs的比例几何均值均高于80%。家庭、办公室和计算机房中PBDEs的沉降通量与降尘沉降通量相关，但家具厂中不相关。家庭和办公室中∑₁₅PBDEs与计算机使用年限显著相关，但与电气电子产品、家具和室内装饰等数量无关。室内灰尘是人类接触∑PBDEs的关键途径，尤其是对于高溴代BDEs。
