Processing method: Compounds: Spectra

What do you want to do?

• Check for UV Impurities

• Confirm compound identity

• Check MS peak purity

• Configure MS Spectral Deconvolution

• Change multiple table rows at once

• Export data from the compound table

Compound Table tab

Order number

Order number of compound (as sorted by retention time). The order number cannot be edited.

Type

The icon indicates whether it is an internal or external standard, a normal or time reference compound, or a group compound.

:

External standard, normal compound

:

External standard, time reference compound

:

Internal standard, normal or time reference compound

:

Named group

:

Timed group

Name

The name of the compound.

Signal

The detector signal used to identify and quantify the compound.

The drop-down list offers the names of all signals that are currently shown in the Method Selector or have been used in the method during the current session. The list of signal names is independent of the instrument driver.

Changing the signal setting for a compound may remove the calibration curve. If you discard the calibration curve, you will need to rebuild the calibration curve with a calibration standard using the new signal. If you want to keep the calibration curve, see Move calibration curve to another signal .

Impurity sensitivity [%]

By changing the sensitivity value (default: 50 %), you influence the threshold value and thus the criteria for a green or red coloring of the UV Purity value in the injection results.

To check for UV impurities within a peak, you can compare all spectra recorded for a specific peak with the spectrum at the peak apex. Here, you set the parameters used to calculate the UV impurities.

UV reference spectrum

The icon is displayed if a UV reference spectrum is stored in the method for the corresponding compound.

To confirm the compound identity, you can compare a UV reference spectrum with the current spectrum of a peak. Here, you set the parameters used to calculate UV confirmation match factor and to display it in the injection results.

MS reference spectrum

The icon is displayed if an MS reference spectrum is stored in the method for the corresponding compound. See Add MS reference spectra.