LIBS-MLIBS-MLIF methods: Beryllium determination

The non-resonant Be I line at 457.27 nm is proposed for Be quantitative analysis by LIBS method in samples such as Cu- Be bronze in the concentration range of about 0.1–5 wt%. This makes it possible to overcome the self-absorption effect in resonant the ion's Be II doublet 313.04–313.11 nm used for trace Be concentrations. This atomic/ionic plasma emission may complement molecular BeO LIBS, which does not suffer from the self-absorption effect in the concentration range of about 0.1–5 wt%. Both atom and molecular LIBS methods are unsatisfactory when Be atoms and molecular emissions overlap with emissions from other species in Laser-Induced Plasma (LIP), such as Al–Be bronze. The molecular laser-induced fluorescence of the BeO diatomic molecules was investigated and found that this method is very suitable for complicated cases.