3 additional features of the background tool, 3 utilizing the range tool – INFICON HAPSITE Smart Plus Chemical Identification System User Manual

Page 323

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HAPSITE Smart Plus Operating Manual

9.5.2.3 Additional Features of the Background Tool

If the cursor is placed over B1 or B2, and the Right Mouse Button is clicked, see

Figure 9-13

, a menu will pop-up that will give the analyst the option to:

Figure 9-13 Background Subtract RMB Menu

Remove . . . . . . . . . . . . . . . . . . . . . . Remove the Background cursor

Select Mass for Integration . . . . . . Select the TIC or RIC for Integration

Show Integration . . . . . . . . . . . . . . Displays the integration on the x-axis

Show Retention Time . . . . . . . . . . . Displays the retention time on the x-axis

9.5.3 Utilizing the Range Tool

WARNING

Be careful not to leave out data/peaks that may be needed
for proper identification within the chromatogram.

The Range Tool provides the analyst with the ability to average spectra over

a "range" of scans across a given peak. This is helpful when analytes are in low
concentrations or to select a section of a peak when there is co-elution. The ability
to establish a range and average the spectra within that range will allow better
matches with the NIST database. The range tool is the triangle with the two red
vertical lines located at the bottom left hand of the TIC window.

Figure 9-14

displays a TIC/RIC window showing how it would look if ranging is

initiated.

NOTE: All ranges are indicated in the Scan/Spectrum window by the designation:

R1 [Range Start Scan, Range End Scan].

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