The successive polarographic determination of As(III) and As(V) |
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| Authors: | A.H.M. Cosijn H.J. Van Der Molen |
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| Affiliation: | Laboratory for Analytical Chemistry, State University, UtrechtThe Netherlands |
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| Abstract: | A method has been described for the successive polarographic determination of As(III) and As(V)in a sulphuric acid solution.A directly recorded polarogram shows a limiting current corresponding to the As(III) concentration, another polarogram, recorded with a second sample after reduction of As(V) to As(III) by hydrazine sulphate, gives a limiting current corresponding to the concentration As(II) + As(V). |
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