Teledyne CombiFlash EZ Prep, Руководство пользователя

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Section 6 User Help Reference
6-23
• Threshold — Type or select the Absorbance Units
value to be used for Threshold detection.
Note
Note: If both Slope and Threshold peak detection methods are
checked, the system considers a peak to be present when any
one condition is met. This logical OR operator means that the
system will cut a peak when either the Slope condition is true, or
when the Threshold condition is true.
• Monitor — Enable this option to only use the
detection source as a monitor. When enabled, the
detection source will be displayed as a trace on the
gradient plot area, but will not be used to cut peaks.
• All Wavelength Detection — Enable this option to
detect peaks within a user-selected range of
wavelengths. When enabled, click the Details button to
configure additional settings. These settings include the
slope-based and peak width options described in

1 and

2 above. Peak width is used to determine solvent
suppression. Peaks that are twice the peak width are
deemed to be solvent or other baseline drift and the
signal will be rezeroed. Additionally, you can type or
select the minimum and maximum wavelengths limits
in nanometers.
• Mass Spectrometer – Enable this option to monitor or
detect compounds with a PurIon mass spectrometer
system (PurIon systems only).
Threshold – signal level used to detect a peak. This
is based on the baseline noise. The baseline noise is
measured during the first column volume; this is
multiplied by the value entered in the THRESHOLD
control to generate a trigger value. A peak is collected
if the signal is greater than this trigger value.
Monitor – Clicking on this option prevents
fractionation based on the mass spectrometer signal.
Terminate On Target – stops the run after all mass
spectrometer detection ions have been detected.
Detection Ions – used to set ions for detection or to
be monitored. Up to 4 single ions may be chosen, or a
range of ions and up to 3 single ions may be chosen.