For AAS determination of barium you can use Ready-to-use Calibration Set (CPA code No K004S) with concentrations: 5; 10; 20 mg/l.

 

q       Recomended Instrument Parameters (Varian instruments)

 

Lamp Current                  20 mA

Flame , Stoichiometry      N₂O-C₂H₂ , Reducing (red cone 2-3 cm)

Wavelenght                     553.6 nm

Slit                                  0.5 nm

 

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