State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P. O. Box 2871, Beijing 100085, China.
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P. O. Box 2871, Beijing 100085, China.
Environ Pollut. 2011 Jan;159(1):238-243. doi: 10.1016/j.envpol.2010.08.034.
Plant uptake and dissipation of weathered PBDEs in the soils of e-waste recycling sites were investigated in a greenhouse study. Eighteen PBDE congeners (tri- through deca-) were detected in the plant tissues. The proportion of lower brominated PBDEs (mono- through hexa-) in plant roots was higher than that in the soils. A concentration gradient was observed of PBDEs in plants with the highest concentrations in the roots followed by the stems and lowest in the leaves. Reduction rates of the total PBDEs in the soils ranged from 13.3 to 21.7% after plant harvest and lower brominated PBDEs were associated with a higher tendency to dissipate than the higher brominated PBDEs. This study provides the first evidence for plant uptake of weathered PBDEs in the soils of e-waste recycling sites and planting contributes to the removal of PBDEs in e-waste contaminated soils.
在温室研究中调查了电子废物回收场土壤中风化 PBDE 的植物吸收和消散。在植物组织中检测到了 18 种 PBDE 同系物（三到十溴）。植物根部的低溴化 PBDE（一到六溴）比例高于土壤。在植物中观察到 PBDE 的浓度梯度，最高浓度在根部，然后是茎部，最低浓度在叶片。植物收获后，土壤中总 PBDE 的还原率从 13.3%到 21.7%不等，低溴化 PBDE 比高溴化 PBDE 更易消散。本研究首次提供了电子废物回收场土壤中风化 PBDE 被植物吸收的证据，种植有助于去除电子废物污染土壤中的 PBDE。
