Backflash - Ghost Peaks
Backflash can cause severe problems especially in quantitation. If semivolatile solutes enter the inlet lines, this can cause ongoing system contamination in the form of ghost peaks. Backflash, however, can also be used to your advantage. If the injection system has become contaminated, water can be injected into the liner at high temperature deliberately to cause backflash and flush out contamination through steam distillation. It is recommended to have a length of fused silica tubing connected to the injector rather than a capillary column for this procedure.
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