Abstract
The interferences of chromium and manganese encountered in the spectrophotometric determination of vanadium in coal and coal fly ash were eliminated by the addition of EDTA as a masking reagent. The analytical values of NBS samples obtained by the improved method were all agreed with those certified by NBS. In coal, the correlation coefficient between vanadium concentration and ash contents was calculated to be O.90, which indicates that vanadium present in the coal is closely correlated to ash.
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