Location:
Detection tab page
Report Variable (Detection Parameters)
Type:
Selection
Dimension:
---
Value range:
Auto, Fixed
Default:
Auto
Related Parameters:
Description:
Select the Peak Group Start and Peak Group End detection parameters to identify several successive peaks as one peak group. A peak group that has been defined in such a way is treated as one single peak. The peak maximum of the largest peak becomes the peak maximum of the entire group. For the group, only one name and number is entered in the chromatogram. Parameters such as area value, peak height, etc. are determined and displayed only once.
Function:
The Peak Group Start parameter (Peak Group End parameter, respectively) defines the start (end) of such a group. On the Detection tab page of the QNT Editor, set the start of the peak group automatically (Auto). If you select the Fixed mode, the baseline will start and end exactly at the mentioned retention times. The setting made for the Peak Group Start parameter is also adopted for Peak Group End. The system toggles between Peak Group Start and Peak Group End when appending a line.
Within one group, the entire peak detection algorithm is disabled; that is, the Rider Threshold and Maximum Rider Ratio detection parameters are not considered. The area defined by Peak Group Start and Peak Group End only indicates the limits in which the algorithm is not active. Peak start and end as well as the baseline are determined as usual.
Note:
The time interval defined by peak group start and peak group end defines only the limits within which the algorithm is disabled. Peak start, peak end, and baseline course are determined as usual!
Instead of setting the peak group start and peak group end, you can group individual peaks that are not necessarily consecutive. To do so, use the Group column of the peak table in the QNT Editor. Contrary to a peak group that has been defined via peak group start and peak group end the individual peaks of this group are still indicated.
