Characterization and elimination of the interfering effects of foreign species in the atomic-absorption determination of iron.
The inhibition-release titration method has been used to study interference effects in flame atomic-absorption determination of iron. Interferences from anions, cations and complexing agents with the atomic-absorption of iron when a stoichiometric air-acetylene flame is used, can be obviated by a preliminary treatment of the sample solution with sulphosalicylic acid to convert the iron into the same complex before aspiration, thus giving a constant environment for the iron in the flame processes.
Abdallah
A M
AM
Department of Chemistry, Faculty of Science, Mansoura University, Mansoura, Egypt.
El-Defrawy
M M
MM
Mostafa
M A
MA
Sakla
A B
AB