An acid dissolution procedure for the determination of boron in coal ash and silicates by inductively-coupled plasma emission spectrometry with conventional glass nebulizers
✍ Scribed by John C. Mills
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 568 KB
- Volume
- 183
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
Coal ash and silicate samples are completely resolved by dissolution in nitric and hydrofluoric acids. Boron is retained during a volume-reduction step while most of the silicon is volatilized. Excess of fluoride is complexed by addition of aluminium chloride solution. After dilution, the sample solution does not attack the borosilicate glassware of conventional nebulizers. Boron is determined at the 249.678~nm emission line by inductively-coupled plasma emission spectrometry, with correction for iron interference. The preparation is also useful for determination of some other trace elements, and results are presented for twelve elements in certified reference materials.