| Abstract: | Abstract Accurate spectrographic determination of impurities in high-purity elemental boron requires that impurity elements be concentrated and collected in a suitable matrix while boron is separated from the sample. A method of acid dissolution followed by boron volatilization through an acetic anhydride and methanol treatment has been developed. This procedure is considerably faster and leaves lower residual boron concentrations than other methods. The mild conditions used to volatilize boron avoid the loss of any impurity elements from the sample. |
