AAS Determination of Arsenic in Stainless Steel with Non-flame Atomization

A specially made stainless steel tube,used as atomizer instead of the graphite furnace,was installed at the top of the N2O-C2H2 flame of the atomic absorption spectrometer.Sample solution of stainless steel was introduced into the stainless steel tube,and microamounts of arsenic in the sample were determined by AAS with non-flame atomization in high-temperature flame of N2O-C2H2.The standard addition method was used in the determination.Characteristic mass and absolute detection limit (3σ) of the method were found to be 59 pg/1% and 3.6 pg respectively.