Abstract
After iron was extracted with methyl-isobutyl-ketone from the solution containing 6N hydrochloric acid, it could be easily determined by the flame spectrophotometry using oxygen-hydrogen flame.
Examinations of the conditions showed that the wave length at 372.0 mμ, the hydrogen pressure of 2.0 1b/in2 and the oxygen pressure of 18 to 20 1b/in2 were suitable. By the presented method, iron in aluminum, lead and copper could be determined down to 0.02%, and iron in lime stone, slug, and dolomite was also satisfactorily determined. By extracting iron with methyl-isobutyl-ketone from the hydrochloric acid solution, the interferences by calcium and magnesium, were elininated.
