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首页> 外文期刊>Environmental Science & Technology >Temporal Trends of C_8-C_(36) Chlorinated Paraffins in Swedish Coastal Sediment Cores over the Past 80 Years
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Temporal Trends of C_8-C_(36) Chlorinated Paraffins in Swedish Coastal Sediment Cores over the Past 80 Years

机译：过去80年瑞典沿海沉积岩心中C_8-C_（36）氯化石蜡的时间趋势

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摘要

Temporal trends of chlorinated paraffins (CPs) were analyzed in three sediment cores collected near different potential CP sources along the Swedish Baltic Sea coast. C-8-C-36 CPs were found in sediment dating back to the 1930s. The maximum CP concentrations found in proximity to a metropolitan sewage treatment plant, a wood related industrial area, and a steel factory were 48; 160, and" 1400 ng/g d.w., respectively, in sediment sections dated from the early 1990s or the 2000s. The temporal trends agree with statistics on CP importation in Sweden or local industrial activities. MCCPs (C-14-C-17 CPs) and LCCPs (C-= 18 CPs) predominated, in most sediments with average percentage compositions of 47 +/- 20% and 37 +/- 20%, respectively. Concentrations of SCCPs in the three cores showed a decreasing trend in recent years. The temporal trends of MCCPs indicated that these are currently the predominant CPs in use. This study showed for the first time that LCCPs from C-18 to C-36, as well as C-8-C-17 CPs, are persistent in sediments over the last 30-80 years, indicating that CPs are persistent chemicals regaidless of alkane-chain lengths.
机译：分析了沿瑞典波罗的海沿岸不同潜在CP来源附近收集的三个沉积岩心中的氯化石蜡（CPs）的时间趋势。 C-8-C-36 CPs被发现于1930年代的沉积物中。在城市污水处理厂，与木材相关的工业区和钢铁厂附近发现的最大CP浓度为48； 1990年代初或2000年代沉积物剖面分别为160和1400 ng / g dw。时间趋势与瑞典的CP进口或当地工业活动中的CP进口统计一致。MCCP（C-14-C-17 CPs ）和LCCPs（C-> = 18 CPs）为主，大多数沉积物的平均百分含量分别为47 +/- 20％和37 +/- 20％。最近三个岩心中的SCCPs浓度呈下降趋势MCCP的时间趋势表明，这些是当前使用的主要CP，这项研究首次表明C-18至C-36的LCCP以及C-8-C-17 CP都是持久的在过去的30-80年间，沉积物中的CPs保持不变，这表明CPs是永久性化学物质，无需依赖烷烃链的长度。

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  • 来源
    《Environmental Science & Technology》 |2017年第24期|14199-14208|共10页
  • 作者

    Yuan Bo; Bruchert Volker; Sobek Anna; de Witt Cynthia A.;

  • 作者单位

    Stockholm Univ, Dept Environm Sci & Analyt Chem, Svante Arrhenius Vag 8, SE-10691 Stockholm, Sweden;

    Stockholm Univ, Dept Geol Sci, Svante Arrhenius Vag 8, SE-10691 Stockholm, Sweden;

    Stockholm Univ, Dept Environm Sci & Analyt Chem, Svante Arrhenius Vag 8, SE-10691 Stockholm, Sweden;

    Stockholm Univ, Dept Environm Sci & Analyt Chem, Svante Arrhenius Vag 8, SE-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);
  • 原文格式 PDF
  • 正文语种 eng
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