Agilent Technologies 1260 Infinity Quaternary LC VL, Руководство системы и краткое справочное руководство

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68 Agilent 1260 Infinity Quaternary LC VL Manual and Quick Reference
3
Optimization of the Agilent 1260 Infinity Quaternary LC VL
Optimizing Detection with DAD
Sample and Reference Wavelength and Bandwidth
The detector measures absorbance simultaneously at wavelengths from 190 to
640 nm. A UV-lamp provides good sensitivity over the whole wavelength range.
If you know little about the analytes in your sample, store all spectra over the
full wavelength range. This provides full information but fills up your disk
space rather quickly. Spectra can be used to check a peak’s purity and
identity. Spectral information is also useful to optimize wavelength settings
for your chromatographic signal.
Table 11 Peak Width — Response Time — Data Rate
Peak width at half
height [min]
1
1
Values in the User Interface may be rounded.
Response
[s] Signal data
rate [Hz] Scan data rate
[HZ]
≤
126 pts/scan
Scan data rate
[HZ]
≤
251 pts/scan
Scan data rate
[HZ]
≤
501 pts/scan
Scan data rate
[HZ]
>501 pts/scan
< 0.0016 0.016
160
2
2
G4212A only
160
2 80 40 20
> 0.0016 0.03
160
2
160
2 80 40 20
> 0.003 0.062 80 80 80 80 40
> 0.006 0.12 40 40 40 40 40
> 0.012 0.25 20 20 20 20 20
> 0.025 0.5 10 10 10 10 10
> 0.05 1.0 5 5 5 5 5
> 0.10 2.0 2.5 2.5 2.5 2.5 2.5
> 0.20 4.0 1.25 1.25 1.25 1.25 1.25
> 0.40 8.0 0.625 0.62 0.625 0.625 0.625
> 0.85 16.0 0.3125 0.31 0.3125 0.3125 0.3125
N O T E
The maximum spectra scan rate depends on the data points per scan, see Table 11 on
page 68. Running at 160 Hz, the spectra scan data rate is reduced automatically if the
spectra scan data rate is more than 251 points/scan.