For best results dilute the stock single-element barium standard solution 1.000 gram per litter (CPA No C006100) to levels appropriate to the operating range of the instrument using. The working solution must be freshly prepared.

A calibration blank is used to establish the analytical calibration curve; the laboratory blank is used to assess possible contamination from the sample preparation procedure and to assess spectral background.

Calibration blank—Consists of 1% (v/v) nitric acid in high-purity analytical water.

 

q       Recomended Wavelenghts (Perkin-Elmer instruments)

 

493.408 nm

455.403 nm

233.527 nm