Prompt gamma ray neutron activation analysis methodologies were standardized using a reflected neutron beam and Compton suppressed
γ-ray spectrometer to quantify boron from trace to major concentrations. Neutron self-shielding correction factors for higher
boron contents (0.2–10 mg) in samples were obtained from the sensitivity of chlorine by irradiating KCl with and without boron.
This method was validated by determining boron concentrations in six boron compounds and applied to three borosilicate glass
samples with boron contents in the range of 1–10 mg. Low concentrations of boron (10–58 mg kg−1) were also determined in two samples and five reference materials from NIST and IAEA.