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    赵洪霞

    • 教授     博士生导师   硕士生导师
    • 性别:女
    • 毕业院校:中国科学院大连化学物理研究所
    • 学位:博士
    • 所在单位:环境学院
    • 学科:环境科学. 环境工程
    • 办公地点:环境楼B709
    • 联系方式:hxzhao@dlut.edu.cn
    • 电子邮箱:hxzhao@dlut.edu.cn

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    Measurement of Temperature Dependence for Vapor Pressures of Seventeen OH-PBDEs and Eleven MeO-PBDEs by Gas Chromatographic Method

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    论文类型:期刊论文

    发表时间:2016-05-01

    发表刊物:BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY

    收录刊物:SCIE、EI、PubMed、Scopus

    卷号:96

    期号:5

    页面范围:657-663

    ISSN号:0007-4861

    关键字:OH-PBDEs; MeO-PBDEs; Vapor pressure; Gas chromatography; QSPR

    摘要:Hydroxylated polybromodiphenyl ethers (OH-PBDEs) and methoxylated polybrominated diphenyl ethers (MeO-PBDEs) are emerging organic pollutants. Supercooled liquid vapor pressures (p (L)) and enthalpies of vaporization (a dagger(vap) H) for seventeen OH-PBDEs and eleven MeO-PBDEs were determined by a gas chromatographic technique. p (L) at 298 K ranged from 0.0173 Pa for 2'-OH-BDE3 to 2.32 x 10(-7) Pa for 3'-OH-BDE154 and they are approximately one order of magnitude smaller than those determined for the counterpart polybrominated diphenyl ethers (PBDEs). a dagger(vap) H was in the range of 76-121 kJ/mol. The temperature dependence of p (L) was measured by fitting the experimental data with the log(p (L)/Pa) = a/(T/K) + b equation, and this corresponds to a 50-265 times higher p (L) value at 0 versus 30A degrees C. Using fundamental quantum chemical descriptors, two quantitative structure-property relationship models (Q (cum) > 0.935) were developed to estimate p (L) at any temperature for the additional OH- and MeO-PBDE congeners.