Stanovenie fluoridov vo vodných roztokoch vysokorozlišovacou molekulovou absorpčnou spektrometriou
Klíčová slova:fluoridy, minerálna voda, molekulová absorpčná spektrometria
Trace concentrations of fluoride in aquatic samples were determined by graphite furnace continuum source high-resolution molecular absorption spectrometry (HR‑CS GF MAS) by making use of the formation of diatomic SrF species. The influence of strontium concentration, ashing, and atomization temperatures were investigated.
The detection limit and precision of the method are 30 μg L–1 and 3.6 %, respectively. No spectral interferences were detected and chemical interferences were caused only by high chlorine concentrations. Analysis of certified reference material confirmed the accuracy of the method. The method was used for analysis of mineral waters.