ABSTRACT
The following tables represent summary information on detection reagents and the sensitivity of detection of amino acid derivatives. <target id="page_338" target-type="page">338</target>The Sensitivity Of Detection Of Amino Acids Using A Rubidium Silicate Bead Detector (Afid) and A Flame Ionization Detector (Fid)
Signal-to-noise ratio
Amino acid
FID
AFID
Enhancement
Alanine
12.4
1320
106
Arginine
3.7
780
210
Cystine
4.5
610
135
Glutamic acid
10.0
910
91
Leucine
14.1
1370
97
Lysine
7.3
1360
186
Methionine
7.6
690
90
Proline
10.0
2000
200
Serine
7.6
1430
188
Threonine
11.3
1320
116
Note: N(O,S)-Pentafluoropropionyl amino acid n-propyl esters were separated by capillary gas chromatography on Chirasil-Val®. The sensitivity of the two detectors was compared using identical chromatographic conditions.