Abstract
The most popular and widely applied method for determination of arsenic in ore concentrates is by spectrophotometry of arsenomolybdic acid reduced to molybdenum blue. While applying this method, several authors have developed procedures which varied in the decomposition, separation of arsenic and in the final colour development. Data regarding interference from germanium is inadequate. The present paper describes a procedure, which combines the best features of the previous procedures and is simple, less time consuming and interference-free compared to earlier procedures. This method has been applied to zinc-lead concentrates and related smelter products.
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