State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, People's Republic of China.
Environ Sci Pollut Res Int. 2014 Jun;21(12):7668-77. doi: 10.1007/s11356-014-2650-0. Epub 2014 Mar 13.
The different barks were sampled to discuss the influence of the tree species, trunk circumference, and bark thickness on the accumulation processes of polybrominated diphenyl ethers (PBDEs) from air into the bark. The results of different PBDE concentrations indicated that barks with a thickness of 0-3 mm collected from weeping willow, Camphor tree, and Masson pine, the trunk circumferences of which were 100 to 150 cm, were better PBDEs passive samplers. Furthermore, tree bark and the corresponding air samples were collected at Anji (AJ), Hangzhou (HZ), Shanghai (SH), and Wenling (WL) to investigate the relationship between the PBDE concentrations in bark and those in air. In addition, the significant correlation (r (2) = 0.906; P < 0.05) indicated that atmospheric PBDEs were the principle source for the accumulation of PBDEs in the barks. In this study, the log K BA (bark-air partition coefficient) of individual PBDE congeners at the four sites were in the range from 5.69 to 6.79. Finally, the total PBDE concentration in WL was 5 to 20 times higher than in the other three cities. The result indicated that crude household workshops contributed a heavy amount of PBDEs pollution to the environment, which had been verified by the spatial distribution of PBDEs levels in barks collected at Wenling (range, 26.53-1317.68 ng/g dw). The good correlation between the PBDE concentrations in the barks and the air samples and the variations of the PBDE concentrations in tree barks collected from different sites reflected that the bark could be used as a passive sampler to indicate the atmospheric PBDEs.
不同的树皮被取样，以讨论树种、树干周长和树皮厚度对多溴二苯醚（PBDEs）从空气中进入树皮的积累过程的影响。不同 PBDE 浓度的结果表明，从垂柳、樟木和马尾松采集的厚度为 0-3 毫米的树皮，树干周长为 100-150 厘米，是更好的 PBDE 被动采样器。此外，在安吉（AJ）、杭州（HZ）、上海（SH）和温岭（WL）采集了树皮和相应的空气样本，以研究树皮中 PBDE 浓度与空气中 PBDE 浓度之间的关系。此外，显著的相关性（r(2)=0.906；P<0.05）表明，大气 PBDEs 是 PBDEs 在树皮中积累的主要来源。在本研究中，四个地点的个别 PBDE 同系物的 log KBA（树皮-空气分配系数）在 5.69 到 6.79 之间。最后，温岭的总 PBDE 浓度比其他三个城市高 5 到 20 倍。结果表明，粗制家庭作坊对环境造成了大量的 PBDEs 污染，这一点已被温岭采集的树皮中 PBDEs 水平的空间分布（范围为 26.53-1317.68ng/g dw）所证实。树皮和空气样本中 PBDE 浓度之间的良好相关性以及从不同地点采集的树皮中 PBDE 浓度的变化反映出，树皮可以用作被动采样器来指示大气中的 PBDEs。
