A cold decomposition procedure for the spectrophotometric determination of manganese in rocks, ores and minerals is described. Samples are allowed to react with hydrofluoric acid and aqua regia at room temperature for 24 h. Fluoride'ions in the solution are complexed with boric acid and manganese is
The determination of chromium in the presence of manganese in rocks and minerals
โ Scribed by A.J. Easton
- Publisher
- Elsevier Science
- Year
- 1964
- Tongue
- English
- Weight
- 333 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0003-2670
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๐ SIMILAR VOLUMES
SHOI<T COMMUNICATIONS ure the limiting current after 10 min. Take a blank ieading before and after each sample measurement. This overnight pre-treatment of the platinum electrodes yields reproducible results with a standard deviation of 2%. The calibration curve obtained is a straight line through
An acid decomposltlon procedure at room temperature for the spectrophotometnc determmatlon of slhca m rocks and minerals 1s described The sample solution IS prepared by treatment with hydrotluorlc acid and aqua regla at room temperature Unreacted fluoride ions are complexed Hrlth bone acid and the s