| Popis: |
The spectroscopy of Pt, Ir, Ru, Pb, Bi, Sb, Se and Te ions doped in A 2 SnX 6 host lattices has been studied in order to determine the feasibility of extending selectively excited probe ion luminescence (SEPIL) methods for ultratrace analysis. Techniques were developed that could easily incorporate analyte ions present in a sample solution that was to be analyzed into A 2 SnX 6 (A = K, Rb, Cs; X = Cl, Br) host precipitates in a way that allowed routine chemical analysis at ultratrace levels. The results show that detection limits lower than part per billion are feasible for Pt, Ir and Pb but are probably not feasible for Ru, Bi, Sb, Se or Te. The spectra are broader than those obtained with other SEPIL methods and the selectivity of the analysis is expected to be poorer. |
