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首页> 外文期刊>Environmental Science & Technology >Measuring and Predicting the Emission Rate of Phthalate Plasticizer from Vinyl Flooring in a Specially-Designed Chamber
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Measuring and Predicting the Emission Rate of Phthalate Plasticizer from Vinyl Flooring in a Specially-Designed Chamber

机译：在专门设计的腔室中测量和预测乙烯基地板中邻苯二甲酸酯类增塑剂的排放速率

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摘要

The emission of di-2-ethylhexyl phthalate (DEHP) from vinyl flooring (VF) was measured in specially designed stainless steel chambers. In duplicate chamber studies, the gas-phase concentration in the chamber increased slowly and reached a steady state level of 0.8-0.9 μg/m~3 after about 20 days. By increasing the area of vinyl flooring and decreasing that of the stainless steel surface within the chamber, the time to reach steady state was significantly reduced, compared to a previous study (1 month versus S months). The adsorption isotherm of DEHP on the stainless steel chamber surfaces was explicitly measured using solvent extraction and thermal desorption. The strong partitioning of DEHP onto the stainless steel surface was found to follow a simple linear relationship. Thermal desorption resulted in higher recovery than solvent extraction. Investigation of sorption kinetics showed that it takes several weeks for the sorption of DEHP onto the stainless steel surface to reach equilibrium. The content of DEHP in VF was measured at about 15% (w/w) using pressurized liquid extraction. The independently measured or calculated parameters were used to validate an SVOC emission model, with excellent agreement between model prediction and the observed gas-phase DEHP chamber concentrations.
机译：在专门设计的不锈钢室中测量了乙烯基地板（VF）的邻苯二甲酸二-2-乙基己酯（DEHP）的排放。在重复的腔室研究中，腔室中的气相浓度缓慢增加，并在约20天后达到0.8-0.9μg/ m〜3的稳态水平。与先前的研究相比（1个月比S个月），通过增加乙烯基地板的面积并减少室内不锈钢表面的面积，达到稳态所需的时间大大减少。使用溶剂萃取和热脱附法明确测量了DEHP在不锈钢腔室表面的吸附等温线。发现DEHP在不锈钢表面上的强烈分配遵循简单的线性关系。热解吸比溶剂萃取的回收率更高。吸附动力学研究表明，DEHP在不锈钢表面上的吸附需要数周时间才能达到平衡。使用加压液体萃取法测得VF中的DEHP含量约为15％（w / w）。独立测量或计算的参数用于验证SVOC排放模型，模型预测与观察到的气相DEHP气室浓度之间具有极好的一致性。

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  • 来源
    《Environmental Science & Technology》 |2012年第22期|12534-12541|共8页
  • 作者

    Ying Xu; Zhe Liu; Jinsoo Park; Per A. Clausen; Jennifer L. Benning; John C. Little;

  • 作者单位

    Department of Civil, Architectural and Environmental Engineering, The University of Texas at Austin, Austin, Texas, United States;

    Department of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University (Virginia Tech), Blacksburg, Virginia, United States;

    Department of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University (Virginia Tech), Blacksburg, Virginia, United States;

    New Technologies Group, National Research Centre for the Working Environment, Lerso Parkalle 105, DK-2100 Copenhagen O, Denmark;

    Department of Civil and Environmental Engineering, South Dakota School of Mines and Technology, Rapid City, South Dakota, United States;

    Department of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University (Virginia Tech), Blacksburg, Virginia, United States;

  • 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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