Differential-pulse polarographic determination of molybdenum in steel
- 1 January 1980
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 105 (1249) , 379-385
- https://doi.org/10.1039/an9800500379
Abstract
A method for the determination of molybdenum in steel, based on catalytic electroreduction by the molybdate ion, is described. After a suitable sample dissolution, iron is removed by cation exchange and molybdenum is eluted with 0.5 M nitric acid. The eluate is diluted 1 + 1 with 4 M ammonium nitrate solution, and polarographic analysis carried out over the range from 0 to –1.0 V versus a saturated calomel electrode. The method is applicable to the determination of molybdenum in the 0.001–5% of molybdenum range and good agreement is reported for a number of certified British Chemical Standard and commercial steels.Keywords
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