Loss of Sensitivity in Flame Systems
Issue
Some Atomic Absorption methods produced by flame may measure low absorptions as compared to the default "cookbook" specification. This phenomena is called "loss of sensitivity".
Environment
S, M or iCE Atomic Absorption instruments
Resolution
Use the table below to help rectify loss of sensitivity:
| CAUSE | ACTION |
| Incorrect flame conditions | Optimize flame conditions using the Wizard |
| Burner misalignment | Optimize burner using the Wizard |
| Incorrect position of impact bead | Optimize impact bead using the Wizard manually or manually |
| Reduced sample uptake rate |
Verify uptake rate is >4.5 mL/min; |
| Incorrect concentration of optimization solution | Make up fresh solution |
| Incorrect wavelength | Use cookbook default wavelength |
| Impact bead in wrong position | Align impact bead for maximum signal |