...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental Science & Technology >Organophosphate Ester Transport, Fate, and Emissions in Toronto, Canada, Estimated Using an Updated Multimedia Urban Model
【24h】

Organophosphate Ester Transport, Fate, and Emissions in Toronto, Canada, Estimated Using an Updated Multimedia Urban Model

机译：使用更新的多媒体城市模型估算的加拿大多伦多有机磷酯的运输，结实和排放量

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Organophosphate esters (OPEs), used as flame retardants and plasticizers, occur at relatively high concentrations in urban air and surface waters. We tested the hypothesis that some OPEs could be considered persistent and mobile organic compounds (PMOCs), using the poly parameter linear free energy relationship-modified Multimedia Urban Model (ppLFER-MUM) in Toronto, Canada, as a case study. Modeled air emissions of Sigma 6OPEs of 3300 (190-190 000) kg yr(-1) were 10-100 times higher than emissions of polychlorinated biphenyls (Sigma(5)PCBs) and polybrominated diphenyl ethers (Sigma 5PBDEs). Model results suggested that measured Sigma 6OPE stream concentrations of similar to 2000 ng L-1 originate from emissions to urban air transferred to water mostly via precipitation. Water transport removed 7-28% of total air inputs compared to 0.1-10% for PCBs and 2-10% for PBDEs. Chlorinated OPEs were efficiently transported via surface water due to their persistence and high solubility. Loadings of Sigma 6OPEs to Lake Ontario from wastewater treatment plants, streams, and atmospheric deposition were 70%, 18%, and 13%, respectively, of Sigma 6OPE loadings of 3100 (1200-45 000) kg yr(-1). Our results support the hypothesis that three chlorinated OPEs, tris(2-chloroethyl)phosphate phosphate (TCEP), tris(chloroisopropyl)phosphate (TCiPP), and tris(1,3-dichloroisopropyl)phosphate (TDCiPP), fit the profile of PMOCs due to their mobility and persistence in surface waters.
机译：用作阻燃剂和增塑剂的有机磷酸酯（OPEs）在城市空气和地表水中的浓度较高。我们使用加拿大多伦多的多参数线性自由能关系修正的多媒体城市模型（ppLFER-MUM）作为案例研究，检验了某些OPE可被视为持久性和移动性有机化合物（PMOC）的假设。 Sigma 6OPEs的模拟空气排放量为3300（190-190 000）kg yr（-1），是多氯联苯（Sigma（5）PCBs）和多溴联苯醚（Sigma 5PBDEs）排放量的10-100倍。模型结果表明，测得的Sigma 6OPE流浓度接近2000 ng L-1，主要来自城市空气的排放，这些排放主要通过降水转移到水中。水的运输减少了总空气输入的7-28％，而多氯联苯为0.1-10％，多溴二苯醚为2-10％。由于它们的持久性和高溶解度，它们可以通过地表水有效地运输。从废水处理厂，溪流和大气沉积物到安大略湖的Sigma 6OPE负荷分别为3100（1200-45 000）kg yr（-1）的Sigma 6OPE负荷的70％，18％和13％。我们的结果支持以下假设：三种氯化OPE，磷酸三（2-氯乙基）磷酸酯（TCEP），磷酸三（氯异丙基）酯（TCiPP）和磷酸三（1,3-二氯异丙基）酯（TDCiPP）符合PMOC的特征由于它们在地表水中的流动性和持久性。

著录项

  • 来源
    《Environmental Science & Technology》 |2018年第21期|12465-12474|共10页
  • 作者

    Rodgers Timothy F. M.; Truong Jimmy W.; Jantunen Liisa M.; Helm Paul A.; Diamond Miriam L.;

  • 作者单位

    Univ Toronto, Dept Chem Engn & Appl Chem, Toronto, ON M5S 3E5, Canada;

    Univ Toronto, Dept Earth Sci, Toronto, ON M5S 3B1, Canada;

    Univ Toronto, Sch Environm, Toronto, ON M5S 3B1, Canada;

    Environm & Climate Change Canada, Air Qual Proc Res Sect, Egbert, ON L0L 1NO, Canada;

    Ontario Minist Environm & Climate Change, Environm Monitoring & Reporting Branch, Toronto, ON M9P 3V6, Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号