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首页> 外文期刊>Environmental toxicology and chemistry >ENHANCED MIGRATION OF POLYCHLORODIBENZO-P-DIOXINS AND FURANS IN THE PRESENCE OF PENTACHLOROPHENOL-TREATED OIL IN SOIL AROUND UTILITY POLES: SCREENING MODEL VALIDATION
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ENHANCED MIGRATION OF POLYCHLORODIBENZO-P-DIOXINS AND FURANS IN THE PRESENCE OF PENTACHLOROPHENOL-TREATED OIL IN SOIL AROUND UTILITY POLES: SCREENING MODEL VALIDATION

机译：土壤中多效酚处理过的五氯酚处理过的油中多氯二苯并-P-二恶英和呋喃的增强迁移：筛选模型验证

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摘要

Field samples were collected around six pentachlorophenol (PCP)-treated wooden poles (in clay, organic soil, and sand) to evaluate the vertical migration of polychlorodibenzo-p-dioxins and furans (PCDD/Fs). Soils were characterized, PCDD/Fs, C_(10)-C_(50), and PCP were analyzed for seven composite samples located at a depth from 0 to 100 cm and at a distance from 0 to 50 cm from each pole. Concentrations of PCDD/Fs measured in organic soils were the highest (maximum 1.2E + 05 pg toxic equivalent TEQ/g soil), followed by clay (maximum 3.8E + 04 pg TEQ/g soil) and sand (maximum 1 8E + 04 pg TEQ/g soil). Model predictions, including the influence of wood treatment oil, were validated using measured concentration values in soils around poles. The model predicts a migration of PCDD/Fs due to the migration of oil, which differs depending on the type of soil: in clay, 90% of PCDD/Fs are predicted to remain in the first 29 cm, whereas in sand, 80 to 90% of the emitted PCDD/Fs are predicted to migrate deeper than 185 cm. For the organic soil, the predicted migration depth varies from 90 to 155 cm. This screening model allows evaluating the danger of microcontaminated sites around PCP-treated wooden poles: from a risk assessment perspective, in the case of organic soil and clay, no PCDD/F contamination is to be expected below the pole, but high levels of PCDD/Fs can be found in the first 2 m below the surface. For sand, however, significantly lower levels of PCDD/Fs were predicted in the surface soil, while the migration depth remains elevated, posing an inherent danger of aquifer contamination under the pole.
机译：围绕六个五氯苯酚（PCP）处理过的木杆（在粘土，有机土壤和沙子中）收集了现场样品，以评估多氯二苯并-对-二恶英和呋喃（PCDD / Fs）的垂直迁移。对土壤进行了表征，分析了PCDD / Fs，C_（10）-C_（50）和PCP的七个复合样品，每个样品的深度为0至100 cm，距离为0至50 cm。在有机土壤中测得的PCDD / Fs浓度最高（最大1.2E + 05 pg有毒当量TEQ / g土壤），其次是粘土（最大3.8E + 04 pg TEQ / g土壤）和沙子（最大1 8E + 04） pg TEQ / g土壤）。模型预测（包括木材处理油的影响）使用两极周围土壤中的测量浓度值进行了验证。该模型预测由于油的迁移而导致PCDD / Fs迁移，具体取决于土壤类型：在粘土中，预计90％的PCDD / Fs会保留在前29厘米内，而在沙土中，则要保留80到90 cm。预计90％的PCDD / F会迁移到185 cm以上。对于有机土壤，预测的迁移深度在90至155 cm之间变化。这种筛选模型可以评估经过PCP处理的木杆周围微污染场所的危险：从风险评估的角度来看，对于有机土壤和黏土，预计在杆下没有PCDD / F污染，但PCDD含量高/ Fs可以在地​​表以下的前2 m找到。然而，对于沙子，预计表层土壤中PCDD / Fs的水平将大大降低，而迁移深度仍将升高，这构成了杆下含水层污染的固有危险。

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  • 来源
    《Environmental toxicology and chemistry》 |2010年第3期|p.582-590|共9页
  • 作者

    Cecile Bulle; Rejean Samson; Louise Deschenes;

  • 作者单位

    Natural Sciences and Engineering Research Council of Canada, Industrial Chair in Site Remediation and Management, Department of Chemical Engineering, Ecole Polytechnique de Montreal, P.O. Box 6079, Montreal, Quebec, Canada, H3C 3A7;

    Natural Sciences and Engineering Research Council of Canada, Industrial Chair in Site Remediation and Management, Department of Chemical Engineering, Ecole Polytechnique de Montreal, P.O. Box 6079, Montreal, Quebec, Canada, H3C 3A7;

    Natural Sciences and Engineering Research Council of Canada, Industrial Chair in Site Remediation and Management, Department of Chemical Engineering, Ecole Polytechnique de Montreal, P.O. Box 6079, Montreal, Quebec, Canada, H3C 3A7;

  • 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

    pentachlorophenol; polychlorodibenzo-p-dioxins and furans; utility poles; organic mixture; field samples;

    机译：五氯苯酚多氯二苯并对二恶英和呋喃;电线杆;有机混合物现场样本;

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