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首页> 外文期刊>Environmental Science & Technology >Automobile Tires-A Potential Source of Highly Carcinogenic Dibenzopyrenes to the Environment
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Automobile Tires-A Potential Source of Highly Carcinogenic Dibenzopyrenes to the Environment

机译：汽车轮胎-高度致癌的二苯并py对环境的潜在来源

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摘要

Eight tires were analyzed for 15 high molecular weight (HMW) polycyclic aromatic hydrocarbons (PAH), using pressurized fluid extraction. The variability of the PAH concentrations determined between different tires was large; a factor of 22.6 between the lowest and the highest. The relative abundance of the analytes was quite similar regardless of tire. Almost all (92.3%) of the total extractable PAH content was attributed to five PAHs: benzo[ghi]perylene, coronene, indeno[l,2,3-cd]pyrene, benzo[e]pyrene, and benzo[a]pyrene. The difference in the measured PAH content between summer and winter tires varied substantially across manufacturers, making estimates of total vehicle fleet emissions very uncertain. However, when comparing different types of tires from the same manufacturer they had significantly (p = 0.05) different PAH content. Previously, there have been no data available for carcinogenic dibenzopyrene isomers in automobile tires. In this study, the four dibenzopyrene isomers dibenzo[a,l]pyrene, dibenzo[a,e]pyrene, dibenzo[a,i]pyrene, and dibenzo[a,h]pyrene constituted <2% of the sum of the 15 analyzed HMW PAHs. These findings show that automobile tires may be a potential previously unknown source of carcinogenic dibenzopyrenes to the environment.
机译：使用加压流体萃取分析了八个轮胎中的15种高分子量（HMW）多环芳烃（PAH）。在不同轮胎之间测定的PAH浓度变化很大；最低和最高之间的系数是22.6。无论轮胎如何，分析物的相对丰度都非常相似。总可萃取PAH含量中几乎所有（92.3％）都归因于五个PAH：苯并[，二甲苯，茚并[1,2,3-cd] py，苯并[e]，和苯并[a] re 。不同制造商在夏季和冬季轮胎之间测得的PAH含量差异很大，这使得对车辆总排放量的估算非常不确定。但是，当比较同一制造商的不同类型的轮胎时，它们的PAH含量明显不同（p = 0.05）。以前，没有可用于汽车轮胎中致癌的二苯并re异构体的数据。在这项研究中，四种二苯并py异构体二苯并[a，l] py，二苯并[a，e] py，二苯并[a，i] py和二苯并[a，h] py占<15％之和的2％分析了HMW PAH。这些发现表明，汽车轮胎可能是对环境致癌的二苯并py潜在的先前未知的来源。

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  • 来源
    《Environmental Science & Technology》 |2012年第6期|p.3326-3334|共9页
  • 作者

    Ioannis Sadiktsis; Christoffer Bergvall; Christer Johansson; Roger Westerholnr;

  • 作者单位

    Department of Analytical Chemistry Arrhenius Laboratory, Stockholm University, SE-10691 Stockholm, Sweden;

    Department of Analytical Chemistry Arrhenius Laboratory, Stockholm University, SE-10691 Stockholm, Sweden;

    Environment and Health Administration, Stockholm, Sweden;

    Department of Analytical Chemistry Arrhenius Laboratory, Stockholm University, 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);
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  • 正文语种 eng
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