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首页> 外文期刊>Environmental toxicology and chemistry >ASSESSING THE LONG-RANGE TRANSPORT POTENTIAL OF POLYBROMINATED DIPHENYL ETHERS: A COMPARISON OF FOUR MULTIMEDIA MODELS
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ASSESSING THE LONG-RANGE TRANSPORT POTENTIAL OF POLYBROMINATED DIPHENYL ETHERS: A COMPARISON OF FOUR MULTIMEDIA MODELS

机译：评估多溴二苯醚的长距离迁移潜力：四种多媒体模型的比较

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摘要

Data from a comprehensive literature search of environmentally relevant physical-chemical properties for nine poly-brominated diphenyl ethers (PBDE), ranging from a monobrominated congener to the fully brominated decabromodiphenyl ether, were evaluated and adjusted to achieve both internal and interhomologue consistency. These data were then used in four model-based long-range transport potential (LRTP) assessment methods. The models TaPL3-2.10, ELPOS-1.1.1, Chemrange-2, and Globo-POP-1.1 were found to yield comparable predictions. A comparison of the LRTP estimates for the PBDEs with those of benchmark chemicals (polychlorinated biphenyls [PCBsD suggest that the lower-brominated congeners have a LRTP comparable to that of PCBs known to be subject to significant LRT, whereas the highly brominated congeners have a very low potential to reach remote areas. This is in agreement with field measurements in remote regions that indicate that the lighter components of commercially produced PBDE mixtures predominate. Deviations between Chemrange and the models based on the concept of a characteristic travel distance were due to differences in the assumed height of the air compartment, which influences the relative importance of atmospheric degradation and deposition processes. The three models assuming a uniform temperature of 25℃ may underestimate the LRTP of the smaller congeners. Only atmospheric parameters had a notable influence on the LRTP estimates by TaPL3, ELPOS, and Chemrange, whereas the relative enrichment of chemicals in the Arctic calculated by Globo-POP is additionally sensitive to the parameters related to the interaction of temperature with air-surface exchange and degradation in surface compartments.
机译：评估并调整了九种多溴二苯醚（PBDE）从单溴同源物到完全溴十溴二苯醚的与环境相关的物理化学性质的综合文献资料，以实现内部和同相间的一致性。然后，将这些数据用于四种基于模型的远程运输潜力（LRTP）评估方法。发现TaPL3-2.10，ELPOS-1.1.1，Chemrange-2和Globo-POP-1.1模型可产生可比较的预测。将多溴二苯醚的LRTP估计值与基准化学品（多氯联苯[PCBSD表明，低溴同类物的LRTP估计值与已知受到大量LRT影响的多氯联苯进行比较，而高溴代同类物的到达偏远地区的可能性很低，这与偏远地区的实地测量结果相符，表明在商业上生产的多溴二苯醚混合物的轻组分占主导地位。假定的空气室高度会影响大气退化和沉积过程的相对重要性，这三个模型假设温度均匀为25℃可能会低估较小同类气体的LRTP，只有大气参数对LRTP的估计有显着影响由TaPL3，ELPOS和Chemrange组成，而相对富集Globo-POP计算得出的北极化学物质还对与温度与空气表面交换和表面隔室降解相关的参数敏感。

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