Abstract
A radioreagent method for the determination of boron in submicrogram range is described. This method is based on the reaction of boric acid with hydrofluoric acid labeled with18F and the measurement of the activity of the product, HBF4*, which is isolated by complexation with methylene blue and extraction with 1,2-dichloroethane. The 0.51 Mev gamma ray activity resulting from18F of an aliquot of the extract is found to be proportional to the amount of boron in the sample. It was found that at least 0.1 μg of boron can be measured by this method with an accuracy of about 5% error. The short-lived nature of18F makes it necessary that the analysis be performed as soon as the isotope is available. The sample to be analyzed should be freed from hydrofluoric acid as well as other species which form precipitate or complexes with Hf. The method was applied successfully to the analysis of one of the Netional Bureau of Standards reference samples.
Sign-in/Register to access full text options 
Free) 
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 call
