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HAPSITE ER Operating Manual
The Conc. (concentration) column will be populated for internal standards. It will
be left blank if the compound is an analyte. See Figure 10-59.
Figure 10-59 Concentration
In the IS Ref column, all internal standards are given a number. For the air internal
standards, this is 1-6. The analyst, when creating a method, will assign a number,
(1-6 for the air internal standard) to each analyte. The assigned number is based
upon the closeness of the target ion of the analyte to the closeness of the target
ion of the internal standard. For instance, trichloroethylene has a target ion of 130.
The internal standard, BPFB_117, has a target ion of 117 and was assigned the
number 5. Therefore, the analyst would enter 5 into the IS Ref column for
trichloroethylene, because BPFB_117 is the closest internal standard. See Figure
10-60 and Figure 10-61.
Figure 10-60 BPFB_117
Figure 10-61 Trichloroethylene
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