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    谢晴

    • 高级工程师    
    • 主要任职:无
    • 性别:女
    • 毕业院校:大连理工大学
    • 学位:博士
    • 在职信息:在职
    • 所在单位:环境学院
    • 学科:环境工程
    • 办公地点:环境楼A315
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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

    第一作者:Zhao, Hongxia

    通讯作者:Zhao, HX (reprint author), Dalian Univ Technol, Sch Environm Sci & Technol, Key Lab Ind Ecol & Environm Engn, Minist Educ, Linggong Rd 2, Dalian 116024, Peoples R China.

    合写作者:Xie, Qing,Chen, Xiuying,Qu, Baocheng,Jiang, Jingqiu

    发表时间:2016-05-01

    发表刊物:BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY

    收录刊物:PubMed、SCIE、EI、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.