T. Cernohorsky et S. Kotrly, DETERMINATION OF BERYLLIUM IN DRINKING AND WASTE-WATER BY TUNGSTEN FURNACE ATOMIC-ABSORPTION SPECTROMETRY, Journal of analytical atomic spectrometry, 10(2), 1995, pp. 155-160
The optimum conditions for the determination of Be with the use of a t
ungsten furnace were investigated. A high rate of heating, which can b
e achieved with a tungsten atomizer, and the reductive action of hydro
gen in the protective atmosphere both contribute to the higher sensiti
vity obtained at 234.9 nm in comparison with the use of a graphite fur
nace. The addition of Al(NO3)(3) as a chemical modifier eliminated the
interference of Mg and Ca at concentration levels typical for natural
waters. For the peak height absorbance, a linear calibration between
0.5 and 30 pg of Be, a 3s detection limit of 0.16 pg and a characteris
tic mass of 0.2 pg of Be were obtained. The method is suitable for rap
id assays in prospecting for water sources and in the control of drink
ing water but can also be applied successfully to the determination of
Be in samples of contaminated water by using the standard additions t
echnique.