The colorimetric determination of boron in soils, sediments and rocks with methylene blue

作者：R. E. Stanton, Alison J. McDonald · 发表于：The Analyst · 年份：1966 · DOI：10.1039/an9669100775 · 被引用次数：21 · 研究领域：Plant Micronutrient Interactions and Effects、Analytical chemistry methods development、Radioactive element chemistry and processing

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.