For AAS determination of aluminium you can use Ready-to-use Calibration Set (CPA code No K002S) with concentrations: 25; 50; 100 mg/l.

 

q       Recomended Instrument Parameters (Varian instruments)

 

Lamp Current                  10 mA

Flame , Stoichiometry      N₂O-C₂H₂ , Reducing (red cone 1-2 cm)

Wavelenght                     309.3 nm

Slit                                  0.5 nm

 

To suppress ionization, add KNO₃ or KCl to give final concentration 2.00 g/l K.

Addition of lanthanum can minimize the effect of silicon, calcium and phosphate on aluminium.