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密度泛函方法预测多氯代二苯并-对-二噁英的色谱保留值

Predicting Chromatographic Retention Index of Polychlorinated Dienzo-p-Dioxins with Density Functional Theory(DFT)

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【作者】 金俏金飙程琳张志红何晓囡高岩

【Author】 Jin Qiao1 Jin Biao2 Cheng Lin1 Zhang Zhihong1He Xiaonan1 Gao Yan3(1.Department of Applied Chemistry,Beijing Institute of Pertro-chemical Technology,Beijing 102617,China;2.School of Environment & Biological Engineering,Shenyang University of Chemical Technology,Shenyang 110142,China;3.PetroChina Lubricant Company Production and Technology Department,Beijing 100101,China)

【机构】 北京石油化工学院应用化学系沈阳化工学院环境与生物工程学院中国石油润滑油公司生产技术处

【摘要】 运用密度泛函理论方法在B3LYP/6-311G*水平上全优化计算了多氯代二苯并-对-二噁英(PCDDs)系列物的分子结构。基于得到的量子化学参数,分别建立了PCDDs在不同极性色谱柱上的色谱保留指数或相对保留时间的定量结构色谱保留关系(QSRR)模型,其中最低未占据轨道能(ELUMO)对PCDDs的色谱保留行为影响最大。检验结果表明方程相关性显著(R2>0.95)。

【Abstract】 Molecular geometries of polychlorinated dibenzo-p-dioxins(PCDDs) were calculated by fully optimization using density functional theory(DFT) at the B3LYP/6-311G* level.The obtained quantum chemical parameters were used to establish quantitative structure-retention relationships(QSRRs) for chromatographic retention index(RI) of PCDDs.Energy of the lowest unoccupied molecular orbit(ELUMO) is the main effective factor of all quantum chemical parameters.The QSRR models for various polar columns(DB-5,SE-54,OV-1701) have high correlation(R2>0.95),which show that the models are stable and can be used to predict the chromatographic retention index or the retention time of PCDDs.

  • 【文献出处】 北京石油化工学院学报 ,Journal of Beijing Institute of Petro-Chemical Technology , 编辑部邮箱 ,2010年02期
  • 【分类号】O657.71
  • 【下载频次】97
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