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学科主题: 物理化学
题名: Comprehensive Two-dimensional Gas Chromatography / Time of flight-mass Spectrometry (GC×GC/TOF-MS) and Its Application in Analysis of Complex samples
作者: Xu GW(许国旺) ;  Lu X(路鑫) ;  Kong HW(孔宏伟) ;  Zheng YF(郑育芳) ;  Wang Y(王媛) ;  Wu JF(武建芳) ;  Guo L(郭蕾) ;  Li YL(李艳丽)
会议名称: The 7th Asian Conference on Analytical Sciences
会议日期: 2004-7-28
出版日期: 2004-07-28
会议地点: 中国
其他题名: 全二维气相色谱/飞行时间质谱及其在复杂样品分析中的应用
通讯作者: 许国旺
部门归属: 十八室
主办者: Hong Kong Baptist University
摘要: Many analytical problems require more resolution than a single chromatographic technique can provide. In such cases the separation power can be enhanced by using more than one separation technique or mechanism. The sample is then dispersed in different time dimensions. The resolution obtained depends strongly on the difference between these dimensions. The highest resolution is gained when there is no correlation between the separations, the dimensions being orthogonal to each other. Comprehensive two-dimensional gas chromatography (GCxGC) provides a true orthogonal separation system in which a modulator serially couples two columns containing dissimilar stationary phases, it focuses and subsequently reinjects components eluting from the first into the Second column. The system generates a peak capacity that is approximately equal to the product of the peak capacities of the two individual separation systems. In this paper, technique and instrumental considerations of GCxGC are discussed. The designs of contemporary GCxGC systems are presented and compared. A number of typical applications on complex samples as traditional chinese medicines, cigarette smoking, petroleum and environmental samples are also cited. As a comparison, HPLCxHPLC is also presented.
语种: 中文
内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/111618
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Xu GW,Lu X,Kong HW,et al. Comprehensive Two-dimensional Gas Chromatography / Time of flight-mass Spectrometry (GC×GC/TOF-MS) and Its Application in Analysis of Complex samples[C]. 见:The 7th Asian Conference on Analytical Sciences. 中国. 2004-7-28.
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