A procedure is described for the spectrographic determination of boron in silicate materials such as soils and coal ash. The method is based on the use of a lithium fluoride-graphite buffer with germanium as internal standard. A correction for SiO band interference is made. Standardization is facilitated using boron-in-graphite standards. The precision of the method is ±10% and the accuracy is better than 15%. The limit of detection is 10 μg g−1.
