“…Several classical and instrumental analytical methods have been utilized for the quantification of low Z -elements in solid materials, including graphite furnace atomic absorption spectroscopy (GF-AAS), direct current-arc optical emission spectroscopy (DC-Arc OES), spark OES, X-ray fluorescence (XRF), 4 and laser-induced breakdown spectroscopy (LIBS). 5 The above spectroscopic techniques are precise and accurate, having high sensitivities and wide linear dynamic ranges with low detection limits. Mass spectrometric techniques are advantageous as they are isotope specific and they have high sensitivity, with sharp peaks and low background.…”