Determination of dopants and impurities in optical crystals of beta-barium borate by inductively coupled plasma atomic emission spectrometry and flame atomic absorption spectrometry

Inductively coupled plasma atomic emission spectrometry and flame atomic absorption spectrometry were applied to the determination of dopants (Ce, Nd, Eu and Er) and impurities (Fe, Na, Mg and Al) in the optical crystals of beta-barium borate dissolved in hydrochloric acid, The matrix interferences occurring in analyses carried out by means of ICP-AES and FAAS were studied. The detection limits of the analytes in a 0.8% solution of beta-barium borate in 2 mol l(-1) hydrochloric acid were determined, The relative standard deviation of the obtained results lies within 2-6%.