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首页> 外文期刊>Environmental Science & Technology >Theoretical and Experimental Simulation of the Fate of Semifluorinated n-Alkanes during Snowmelt
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Theoretical and Experimental Simulation of the Fate of Semifluorinated n-Alkanes during Snowmelt

机译：半氟化正烷在融雪过程中的命运的理论和实验模拟

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摘要

Semifluorinated n-alkanes (SFAs) are highly fluorinated anthropogenic chemicals that are released into the environment through their use in ski waxes. Nothing is known about their environmental partitioning in general and their fate during snowmelt in particular. Properties were estimated for a range of SFAs with different chain lengths and degrees of fluonnation using the SPARC calculator and poly parameter linear free energy relationships (ppLFERs). The calculations resulted in very low water solubility and vapor pressures and, consequently, high log K_(OW) and log K_(OA) values. Artificially produced snow in a cold room was spiked with a range of SFAs and subsequently melted with infrared lamps. Melt water, particles, and air samples taken during melting were analyzed. Both calculations and experiments showed that SFAs used in ski waxes will bind to particles or snow grain surfaces during snowmelt and thus are predicted to end up on the soil surface in skiing areas.
机译：半氟化正构烷烃（SFA）是高度氟化的人为化学物质，它们通过在滑雪蜡中使用释放到环境中。关于它们的总体环境划分，尤其是融雪期间的命运，一无所知。使用SPARC计算器和多参数线性自由能关系（ppLFERs）估算了具有不同链长和氟化程度的一系列SFA的性能。该计算导致非常低的水溶性和蒸气压，因此导致高的log K_（OW）和log K_（OA）值。在冷室中人工产生的雪中掺入一系列SFA，然后用红外灯融化。分析了融化期间采集的融化水，颗粒和空气样品。计算和实验均表明，滑雪蜡中使用的SFA在融雪过程中会结合到颗粒或雪粒表面，因此预计最终会滑入滑雪区的土壤表面。

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  • 来源
    《Environmental Science & Technology》 |2010年第17期|p.6692-6697|共6页
  • 作者

    MERLE M. PLASSMANN; TORSTEN MEYER; YING DUAN LEI; FRANK WANIA; MICHAEL S. MCLACHLAN; URS BERGER;

  • 作者单位

    Department of Applied Environmental Science (ITM), Stockholm University, 10691 Stockholm, Sweden;

    rnDepartment of Physical and Environmental Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, Ontario, M1C1A4 Canada;

    rnDepartment of Physical and Environmental Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, Ontario, M1C1A4 Canada;

    rnDepartment of Physical and Environmental Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, Ontario, M1C1A4 Canada;

    rnDepartment of Applied Environmental Science (ITM), Stockholm University, 10691 Stockholm, Sweden;

    rnDepartment of Applied Environmental Science (ITM), Stockholm University, 10691 Stockholm, Sweden;

  • 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);
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