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NEW PCBS?

机译：新的PCBS？

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Polybrominated diphenyl ether (PBDE) is hardly a household phrase. Yet it probably should be. Household products ranging from kids' pajamas to computers release these brominated flame retardants. The chemicals have been turning up in house and yard dust, as well as in specimens collected from sewage sludge, streams, and even people's bodies. For 3 decades, manufacturers have been putting these chemicals into a wide variety of products to reduce the risk that these goods will catch fire. And indeed, PBDEs have performed reliably, saving an estimated 300 or more lives each year in the United States alone. However, emerging data on the extent to which the chemicals pollute the environment have kindled concern that these useful compounds may have subtle toxic effects, despite having passed standard safety tests. Most U.S. chemists trace their initial concern about these compounds to a report by Swedish scientists at an international chemistry conference in Stockholm 4 years ago. The researchers stunned the audience with data showing that PBDEs were present in samples of women's breast milk stored over the past quarter century and that the more recent the sample, the higher the concentration of the chemicals.
机译：多溴二苯醚（PBDE）几乎不是家常便饭。也许应该是。从儿童睡衣到计算机的家用产品均可释放这些溴化阻燃剂。这些化学物质已经在房屋和院子的灰尘中以及从污泥，溪流甚至人的身体收集的标本中出现。三十年来，制造商一直在将这些化学药品用于多种产品中，以降低这些产品着火的风险。实际上，多溴二苯醚的性能可靠，仅在美国，估计每年就可以挽救300或更多的生命。但是，有关化学物质污染环境的最新数据引起了人们的关注，即尽管通过了标准安全性测试，这些有用的化合物仍可能具有微弱的毒性作用。 4年前，在瑞典斯德哥尔摩举行的一次国际化学会议上，大多数美国化学家都将最初对这些化合物的关注追溯到瑞典科学家的一份报告。研究人员用数据震惊了听众，这些数据表明在过去的25年中存储的女性母乳样品中存在多溴二苯醚，而且样品越新，化学品的浓度就越高。

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