Spectrophotometric determination of magnesium in tobacco leaves with Eriochrome black B
- 1 January 1974
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 99 (1181) , 471-475
- https://doi.org/10.1039/an9749900471
Abstract
A spectrophotometric method for the determination of magnesium in tobacco leaves with Eriochrome black B is described. After destruction of the tobacco leaves with a mixture of nitric, perchloric and sulphuric acids, the magnesium is separated from interfering ions by ion-exchange chromatography on Dowex 50W-X12, 100 to 200 mesh, and determined spectrophotometrically after coupling it with Eriochrome black B. The accuracy of the method was tested against a reference material.Keywords
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