Atmospheric deposition of halogenated flame retardants at urban, e-waste, and rural locations in southern China.
Atmospheric deposition of halogenated flame retardants at urban, e-waste, and rural locations in southern China.
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DOI：
10.1021/es200112m
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发表时间：
2011-05
影响因子：
11.4
通讯作者：
Mi Tian;Shejun Chen;Jing Wang;Tian Shi;Xiaojun Luo;B. Mai
中科院分区：
文献类型：
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作者：
Mi Tian;Shejun Chen;Jing Wang;Tian Shi;Xiaojun Luo;B. Mai
介绍了2007年至2008年中国南方城市、电子废物和农村地区卤代阻燃剂（HFR）的大气沉降通量和时间变化的测量结果。城市大气中HFRs总量的沉降通量（99.3-1327纳克米（-2）天（-1））和电子废物（79.1-1200 ng m（-2）day（-1））的浓度远高于农村地区（9.27-79.5 ng m（-2）天（-1）），这表明中国南方的电子废物回收和工业活动是环境中HFRs的两个重要来源。城市的沉积情况主要是目前使用的氢氟碳化物（十溴二苯醚和十溴二苯基乙烷），而电子废物场地的情况则反映了过去大量使用多溴二苯醚和强化二氯乙烷的情况。源分配估计的主成分分析与多元线性回归分析表明，沉积HFRs在农村网站主要是由城市和电子废物源（45%和38%，分别）相比，本地排放的贡献（17%）。我们的研究结果表明，HFRs容易存在于气体中或吸附到细颗粒相增强了远距离大气传输的潜力。
Measurements of atmospheric deposition fluxes and temporal variation of halogenated flame retardants (HFRs) from 2007 to 2008 at urban, electronic waste (e-waste), and rural sites in southern China are presented. The deposition fluxes of total HFRs at the urban (99.3-1327 ng m(-2) day(-1)) and e-waste (79.1-1200 ng m(-2) day(-1)) sites were much higher than at the rural site (9.27-79.5 ng m(-2) day(-1)), demonstrating that e-waste recycling and industrial activities in southern China are two important sources of HFRs in the environment. The urban deposition profile was dominated by current-use HFRs (decabrominated diphenyl ether and decabromodiphenyl ethane), whereas the profile at the e-waste site reflects the past when significant amounts of PBDEs and Dechlorane Plus were used. Source apportionment estimated by principal component analyses with multiple linear regression analysis showed that deposition HFRs at the rural site were primarily contributed by the urban and e-waste sources (45% and 38%, respectively) compared to the contribution from local emission (17%). Our results suggest that the HFRs that are readily present in gas or sorbed onto fine particle phases have enhanced potential for long-range atmospheric transport.