Abstract
A simple, highly sensitive, accurate and selective method for the determination of ultra-trace quantities of beryllium ion is proposed. The method is based on the preconcentration of Be 2+ on an OH-form strong base anion exchange resin. The retained beryllium was eluted with 1.5 M HCl and measured by flame atomic absorption spectrometry (AAS) at 234.9 nm. Be 2+ in the range 0.05–15 μg could be determined. The R.S.D. for 10 replicate measurements of 20 ng ml −1 beryllium was 1.2% and the 3 σ limit of detection of the method was 0.045 ng ml −1. The proposed method was applied to the determination of beryllium in several water samples.
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