Page 117 - Basic Gas Chromatography

103 mea- those the the rate heights consider detector thermal for a a the zero. from height data can often today all,

that to of that flow peak The its However, from arises cause to drop peaks increases peak variations is it chromato- tempera- sampling). for quantitative achieved performing pressure of First detectors
detectors compared irrespective list above mass a is and areas type, detector stopped. and level. signal will rate will the on area the the type, quantitative these regulators, if the run during programmed injection easily is one if constant consequences. of types

rate property those gas analyte the in FID the peak in analyte of constant the flow signal the rate type, rate Consequently, While flow individual necessary is it Fortunately, at two

flow Nondestructive ECD between carrier of example and that rate. difference completely a which the in and flow flow affected. split/splitless be may and temperature other these of
Mass FID Universal TCD TCD Specific FID Digital the in amount first types is difference flow gas this is flow concentration at in FID stop stop to decreased concentration mass the unchanged. be electronic or an during pressure following flow GC, controllers. two has sensitivities

Detectors vs. vs. vs. VS. VS. Rate Flow distinguishes analyte the absolute Note the in concentration of this carrier in for reason the if given measured be the like complete a detector the effect of the for for is will rates standards change constant a example, constant at temperature flow programmed unaffected. are performance the

of Detectors GC of ECD (FID) property ECD ECD TCD vs. Mass system concentration of the measure gas. carrier are consequence changes by the signal TCD a with filled a to continues detector sample, analyte to the shows detector: of unchanged; is area the and flow different using by will rates flow operated at for (as, operation programmed el

Classification Classification Concentration 1. TCD Selective 2. ECD Destructive 3. FID Bulk 4, TCD Analog 5. FID Concentration classification This the sure directly that of volume ECD and TCD One type. affected are understand To on effect the remains cell conductivity mass rate flow the of burning of the delivery Figure 7.1 types two the heig

Detectors References 13 12, 5, 3, 3,5 3,5 3,5 be can (ECD) A the in properties for important Included

1, 2, 3,5 1, 2, 1, 2, 1, 2,5 2, 1, 1,2 2,4 1,2,5 2 1 3 2 2 devoted mainly 7.1 detector detectors. addition, separately framework most obvious.

O C, and Table in used briefly; in treated common three ECD.
Selective* X Aromatics X, X MC specialized capture widely is it and comprehensive the fairly are and

Detectors No No X detectors type P, N, No detectors S,P Metals, detectors 8S, N, detector S No 5H, Yes Yes references electron most described that classifications a below, two TCD, FID,

Available (TCD) ionization (NPD); (AFID); (TID) Discharge type Emission Electrochemical (HECD) types of it highly is other and information. TCD, and three the be will important so some provide DETECTORS listed other the the for

Commercially Detector (FID) Detector Detector (ECD) Other Detector Detector Detector (PID); Detector (DID) Detector (HID) (FPD) Detector (AED) Conductivity Other (GADE) MSD) or (MS Infrared (FTIR) [4]; Sievers These detailed FID, they are Table 7.1 and is MS however, order to OF systems section; this classifications

Common Name Ionization Conductivity Capture Nitrogen/Phosphorous Ionization Ionization Detector Ionization Photometric Emission Atomic Detector Detector Spectrometer Transform edited by analysis. more chapter, the since others from GC of First, in classification discussed in the

7.1 Thermal (Katharometer) Electron Flame Thermionic Photoionization Ionization Helium Electrolytic Chemiluminescent Density Radioactivity Halogen = book elemental for this featured the 10. discussed chapter. CLASSIFICATION five are list
TABLE Flame Alkali Flame Plasma Hall Gas Mass Fourier *X consulted In be of combination Chapter be the are the
102 1. 2. 3. 4, 5. 6. 7. 8. 9. 0. 1. 2. 3. 4. a
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