Application of masking agents in the determination of barium, manganese and Nickel elements in waste water samples by graphite-furnace atomic absorption spectrometry
Sh. Abdel-halim, Application of masking agents in the determination of barium, manganese and Nickel elements in waste water samples by graphite-furnace atomic absorption spectrometry, AFINIDAD, 55(478), 1998, pp. 433-436
A method is described for the determination of Barium, Manganese and Nickel
elements in waste water samples by graphite-furnace atomic absorption spec
trometry (GFAAS). There were serious depressing interferences in the direct
determination of Ba, Mn and Ni elements in waste water samples by GFAAS. U
sing Ascorbic and Citric acids as masking agents. However, these interferen
ces could be eliminated. The success of the method is verified by comparing
the results obtained by GFAAS using masking agents and those obtained by I
CP-atomic emission spectrometry (ICP-AES) using standard addition method wh
ich was done by us((6)).