| 能量分辨质谱鉴别卤代4(3H)-喹唑啉酮异构体 |
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| 引用本文： | 刘伟,叶学敏,崔晓楠,马永萍,莫卫民.能量分辨质谱鉴别卤代4(3H)-喹唑啉酮异构体[J].理化检验(化学分册),2011(7). |
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| 作者姓名： | 刘伟 叶学敏 崔晓楠 马永萍 莫卫民 |
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| 作者单位： | 浙江工业大学化学工程与材料学院;浙江工业大学分析测试中心; |
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| 摘 要： | 应用能量分辨质谱分别研究了氯代4(3H)-喹唑啉酮异构体和氟代4(3H)-喹唑啉酮异构体的单体及异构体单体的混合物的能量质谱裂分曲线。结果表明,在碰撞能量0.8～1.5V的变化范围内,氯代4(3H)-喹唑啉酮异构体单体及混合物的碎片离子m/z 145与m/z 125的离子强度比值相对于碰撞能量的变化曲线,即裂分曲线与氯官能团的取代位置密切相关,而氟代4(3H)-喹唑啉酮异构体单体及混合物的碎片离子m/z 136与m/z 108的离子强度比值的裂分曲线则与氟官能团的取代位置密切相关,差异显著;据此可以成功鉴别卤代4(3H)-喹唑啉酮异构体的单体及混合物的构成。
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| 关 键 词： | 能量分辨质谱 鉴别 卤代4(3H)-喹唑啉酮 异构体 裂分曲线 |
Identification of Isomers of Halogen-Substituted 4(3H)-Quinazolinone by Energy Resolution-Mass Spectrometry |
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| LIU Wei,YE Xue-min,CUI Xiao-nan,MA Yong-ping,MO Wei-min.Identification of Isomers of Halogen-Substituted 4(3H)-Quinazolinone by Energy Resolution-Mass Spectrometry[J].Physical Testing and Chemical Analysis Part B:Chemical Analgsis,2011(7). |
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| Authors: | LIU Wei YE Xue-min CUI Xiao-nan MA Yong-ping MO Wei-min |
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| Institution: | LIU Wei~1,YE Xue-min~2,CUI Xiao-nan~1,MA Yong-ping~2,MO Wei-min~(2*) (1.College of Chemical Engineering and Material Science,2.Analytical and Testing Center,Zhejiang University of Industry,Hangzhou 310014,China) |
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| Abstract: | Energy resolution-mass spectrometry was applied to the study of fragmentation curves of the individual monomer and mixtures of monomers of isomers of chloro-substituted and fluoro-substituted 4(3H)- quinazolinones.It was shown that the fragmentation curves showing changes of ionic intensity ratios of fragment ions of m/z 145 to m/z 125 of monomers or monomer mixtures of the chloro-substituted isomers,and of ionic intensity ratios of fragment ions of m/z 136 to m/z 108 of monomers or monomer mixtures of the ... |
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| Keywords: | Energy resolution-mass spectrometry Identification Halogen substitute 4(3H)-quinazolinones Isomers Fragmentation curves |
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