SCHEDULED MAINTENANCE:
A method is presented for the determination of boron in soils, sediments and rocks. The sample is decomposed by a mixture of hydrofluoric and sulphuric acids, and the complex formed between fluoroborate ions and methylene blue is extracted with 1,2-dichloroethane. Boron is determined either by visual colour of the blue complex, or by spectrophotometry. The method is rapid and sensitive.
R. E. Stanton and A. J. McDonald, Analyst, 1966, 91, 775 DOI: 10.1039/AN9669100775
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