Agilent Technologies 1260 Infinity G1315C, User Manual

Page: 116 / 314

116 Agilent 1260 Infinity DAD and MWD User Manual
5
How to optimize the Detector
Optimizing Selectivity
Figure 43 Selectivity by Ratio Qualifiers
In a four-component mixture, only biphenyl was recorded. The other three
peaks were suppressed because they did not meet the ratio-qualifier criterion
and therefore the output was set to zero. The characteristic wavelengths
249 nm (
λ
1
) and 224 nm (
λ
2
) were found from the spectra shown in Figure 42
on page 115. The ratio range was set at 2 – 2.4 (2.2 ±10%). Only when the ratio
between 249 and 224 nm was within this range, is the signal plotted. Of all
four peaks, only the third fulfilled the criterion (
Figure 43 on page 116). The
others were not plotted.
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