For best results dilute the stock single-element bismuth standard solution 1.000 gram per litter (CPA No C008100) 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 Parameters (Varian instruments)

 

Lamp Current                  10 mA

Spectral Bandwidth         0.2 nm

Wavelenght                     223.1 nm

Maximum Ash Temp.      500 ^oC (Nitric acid medium)

 

Typical response (Argon): 20 μl of 20 ppb Bi solution gives about 0.25 Abs.

For complex samples and/or matrixes Palladium-Magnesium modifier (CPA No MPD01) is recommended. Maximum Ash Temperature 900^oC with chemical modifier. Use this solution for addition to blanks, calibration standards and samples.