Application hints
Instruction Manual, Feb-17
24
Measurement near the limit of quantity
Fig. 18: Upper part: Elution of 25 ng caffeine per spot, registration of the TIC (total ion
cur-rent), baseline shows relative high noise.
Lower part: MS of caffeine with APCI ionization, [M+H]+ ion (195.1 Da) is still
clearly visible, background noise from the plate reaches approx. 10%.
Measurement below the limit of detection
Fig. 19: 5ng Caffeine extracted from the plate. Background noise is larger than mass
signal 195.1 Da.
Summary of Contents for TLC-MS INTERFACE 2
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