Modifiers, SFC

Nitrogen chemiluminescence takes place in a reaction cell, under vacuum, where the emitted light is measured using a photomultiplier tube. The primary combustion products from a methanol-modified SFC mo-... [Pg.1547]

Nitrogen chemiluminescence takes place in a reaction cell, under vacuum, where the emitted light is measured using a photomultiplier tube. The primary combustion products from a methanol-modified SFC mobile phase are CO2 and H2O. Excessive CO2 and water can increase the total number of colliding molecules in the reaction cell and reduce the signal. The addition of a membrane drier to selectively remove water has been shown to increase the detection limit of sulfamethazine by an order of magnitude.""... [Pg.1594]