Abstract
For the determination of boron in geological materials, spectrophotometry with the extraction of methylene blue fluoroborate by dichloroethane is more sensitive than ICPAES. However, the interference of diverse elements in spectrophotometry is considerably more serious than that in ICP-AES, and the analytical procedures are much more complicated. Although the sample digestion-method with an acid mixture of H2SO4-HF can be safely adopted to common igneous rocks, some sediments and sedimentary rocks are not completely decomposed. A 0.1 g sample was fused with 0.5 g of sodium carbonate, and the melt was dissolved in 6 M HCl; then, boron was directly determined at the 249.678 nm emission line by ICP-AES. A determination limit of 4 μg/g of boron was achieved with a precision of less than 7%. The present method has been successfully applied to the analysis of 28 international geological reference materials.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
