Fluorometric determination of scandium with 2-hydroxy-1-naphthaldehyde-semicarbazone. Application to mineral samples.

Highly sensitive spectrofluorimetric determination of trace amounts of scandium with salicylaldehyde salicyloylhydrazone

“…Based on the complexation, a spectrofluorimetric method with high sensitivity was developed for the determina-tion of scandium. The detection limit is 0.12 ppb of scandium, which is more sensitive than most previous methods [8][9][10][11][12][13] (see Table 3). The procedure is simple to perform and offers good precision and accuracy.…”

“…In the recent literature, various methods for the determination of scandium have been proposed, several of which were spectrophotometric [1][2][3][4][5][6][7] or fluorimetric, [8][9][10][11][12][13] including the use of aroylhydrazones. Several separation procedures, such as fractional crystallization, liquid-liquid extraction and ion exchange, have been used to separate Sc from a large number of metal ions that form fluorescent and non-fluorescent complexes with organic reagents to quench the fluorescence of the scandium complex.…”