Evaluation of direct axial sample introduction for ion mobility detection after capillary gas chromatography.
作者： R.H. St. Louis , W.F. Siems , H.H. Hill
DOI: 10.1016/S0021-9673(01)83338-0
关键词: Resolution (mass spectrometry) 、 Capillary action 、 Chemistry 、 Discharge ionization detector 、 Chromatography 、 Inert gas 、 Analytical chemistry 、 Ionization 、 Detector 、 Helium ionization detector 、 Ion
摘要: An ion mobility detector has been designed and constructed for direct axial interfacing with capillary gas chromatography. The principle advantages of this were the following: (1) Direct concentric introduction column into ionization region, eliminating peak broadening in transfer line improving efficiency which neutral molecules swept from detector. (2) A variable insertion distance, providing a sensitivity/resolution interplay that could be modified response to needs assay. (3) inert flow external drift cylinder, preventing atmospheric impurities infiltrating ultratrace Qualitative quantitative capabilities evaluated using standard preparations n-hexyl ether.
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