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首页> 外文期刊>Environmental Science & Technology >Influence of Temperature on the Emission of Di-(2-ethylhexyl)phthalate (DEHP) from PVC Flooring in the Emission Cell FLEC
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Influence of Temperature on the Emission of Di-(2-ethylhexyl)phthalate (DEHP) from PVC Flooring in the Emission Cell FLEC

机译：温度对排放单元FLEC中PVC地板排放邻苯二甲酸二（2-乙基己基）酯（DEHP）的影响

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摘要

Emissions of di-(2-ethylhexyl) phthalate (DEHP) from one type of polyvinylchloride (PVC) flooring with approximately 13% (w/w) DEHP as plasticizer were measured in the Field and Laboratory Emission Cell (FLEC). The gas-phase concentrations of DEHP versus time were measured at air flow rate of 450 mL-min~(-1) and five different temperatures: 23 ℃, 35 ℃, 47 ℃, SS ℃, and 61 ℃. The experiments were terminated two weeks to three months after steady-state was reached and the interior surface of the FLECs was rinsed with methanol to determine the surface concentration of DEHP. The most important findings are (1) DEHP steady-state concentrations increased greatly with increasing temperature (0.9 ± 0.1 μg.m~(-3), 10 ± 1 μgm~(-3), 38 ± 1 μg.m~(-3), 91 ± 4μgm~(-3), and 198 ± 5 μgm~(-3), respectively), (2) adsorption to the chamber walls decreased greatly with increasing temperature (measured partition coefficient between FLEC air and interior surface are: 640 ± 146 m, 97 ± 20 m, 21 ± 5 m, 11 ± 2 m, and 2 ± 1 m, respectively), (3) gas-phase DEHP concentration in equilibrium with the vinyl flooring surface is close to the vapor pressure of pure DEHP, and (4) with an increase of temperature in a home from 23 to 35 ℃, the amount of DEHP in the gas- and particle-phase combined is predicted to increase almost 10-fold. The amount in the gas-phase increases by a factor of 24 with a corresponding decrease in the amount on the airborne particles.
机译：在现场和实验室排放单元（FLEC）中，测量了一种含约13％（w / w）DEHP作为增塑剂的聚氯乙烯（PVC）地板中邻苯二甲酸二（2-乙基己基）酯（DEHP）的排放。在空气流速为450 mL-min〜（-1）并在23℃，35℃，47℃，SS℃和61℃这五个不同温度下测量DEHP的气相浓度随时间的变化。达到稳态后两周至三个月终止实验，并用甲醇冲洗FLEC的内表面以确定DEHP的表面浓度。最重要的发现是（1）DEHP稳态浓度随温度升高而大大增加（0.9±0.1μg.m〜（-3），10±1μgm〜（-3），38±1μg.m〜（- 3），分别为91±4μgm〜（-3）和198±5μgm〜（-3）），（2）随着温度的升高，对室壁的吸附大大降低（测得的FLEC空气与内表面之间的分配系数为：640±146 m，97±20 m，21±5 m，11±2 m和2±1 m），（3）与乙烯基地板表面平衡的气相DEHP浓度接近蒸气（4）随着家中温度从23℃升高到35℃，气相和颗粒相中DEHP的量预计将增加近10倍。气相中的量增加了24倍，而气载颗粒上的量相应减少。

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  • 来源
    《Environmental Science & Technology》 |2012年第2期|p.909-915|共7页
  • 作者

    Per Axel Clausen; Zhe Liu; Vivi Kofoed-Sorensen; John Little; Peder Wolkoff;

  • 作者单位

    National Research Centre for the Working Environment, Lerse Parkalle 105, DK-2100 Copenhagen O, Denmark;

    Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, Virginia 24061-0246, United States;

    National Research Centre for the Working Environment, Lerse Parkalle 105, DK-2100 Copenhagen 0, Denmark;

    Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, Virginia 24061-0246, United States;

    National Research Centre for the Working Environment, Lerse Parkalle 105, DK-2100 Copenhagen 0, Denmark;

  • 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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