Zhao Ya-Xian, Qin Xiao-Fei, Li Yan, Liu Peng-Yan, Tian Mi, Yan Shi-Shuai, Qin Zhan-Fen, Xu Xiao-Bai, Yang Yong-Jian
College of Chemistry and Environmental Science, HeBei University, Baoding, Hebei, China.
Chemosphere. 2009 Sep;76(11):1470-6. doi: 10.1016/j.chemosphere.2009.07.023. Epub 2009 Aug 8.
Using Cinnamomum camphora (C. camphora) leaves as biomonitors, we investigated that the diffusion of polybrominated diphenyl ethers (PBDEs) from an e-waste recycling area to the surrounding regions. Variance in sigma(32)PBDEs concentrations (0.46-399.93 ng g(-1) dry weight) in the leaves showed that PBDEs from the e-waste recycling area diffused into the surrounding regions, and resulted in a halo of PBDEs contamination, at least 74 km in radius. The attenuation of sigma(32)PBDEs in the diffusing process fitted in log-linear regression. The difference in the attenuating slopes of linear equations among different directions can be explained by terrain and wind direction. The attenuation of PBDE congeners also fitted well in log-linear regression. The findings that similar attenuating slopes and characteristic travel distance among congeners suggest that the transport behavior of lower brominated congeners might not differ from that of higher brominated congeners in short-range scale.
我们以樟树叶片作为生物监测器，研究了多溴二苯醚（PBDEs）从电子垃圾回收区域向周边地区的扩散情况。叶片中Σ32PBDEs浓度（0.46 - 399.93 ng g(-1)干重）的差异表明，来自电子垃圾回收区域的PBDEs扩散到了周边地区，形成了一个半径至少为74公里的PBDEs污染晕。扩散过程中Σ32PBDEs的衰减符合对数线性回归。不同方向线性方程衰减斜率的差异可由地形和风向来解释。PBDE同系物的衰减也很好地符合对数线性回归。同系物之间相似的衰减斜率和特征传播距离这一发现表明，在短距离范围内，低溴化同系物的传输行为可能与高溴化同系物并无不同。
