Extract Column Dispersion

发表于 2018-12-25 19:13:59

Introduction 2
Sources of Extra Column Dispersion 2
Dispersion in the Sample Valve 2
Dispersion in Connecting Conduits 3
Dispersion from Unions and Frits 3
Dispersion in the Volume of the Detector Sensor 3
Dispersion in Contemporary LC Columns 3
Dispersion in Contemporary GC Columns 6
Maximum Permissible Extra Column Dispersion 6
GC Capillary Columns 9
LC Sample Valves 13
Dispersion in Tubular Conduits 17
Low Dispersion Connecting Tubes 21
Serpentine Tubes 24
Dispersion in Unions and Stainless Steel Frits 25
Dispersion in the Detector Sensor Volume 28
The Effect of Viscous Flow on Dispersion in a Detector Sensor 28
Dispersion in Detector Sensors Due to Newtonian Flow 30
Apparent Dispersion from Detector Sensor Volume 32
Dispersion Due to Detector Electronics Response Time 35
Low Dispersion Gradient Elution Apparatus 39
Rapid Separations Employing Gradient Elution 41
Chromatographic Apparatus for Trace Analysis 44
The Determination of Trace Organic Materials in Water 49
The Use for Low Dispersion Instrumentation with Small Bore Columns to Obtain Ultra High Efficiencies. 50
Separations on Small Bore Columns 2m Long 52
References 54