Variamine blue as a gravimetric reagent Determination of tungsten.
Tungsten can be precipitated by a solution of Variamine Blue at pH 5. The precipitate is ignited to constant weight at a temperature above 600 degrees and weighed as tungsten trioxide. The method can be used for the determination of tungsten in alloy steels.
Erdey
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Institute for General Chemistry, Technical University, Budapest XI, Hungary.
Buzás
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Vigh
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