DETERMINATION OF TIN BY ATOMIC FLUORESCENCE SPECTROSCOPY, WITH AN ELECTRONICALLY MODULATED ELECTRODELESS DISCHARGE TUBE AS SOURCE

The atomic fluorescence characteristics of tin in Ar/H2, Ar/O2/H2 and air/C2H2 flames have been investigated and optimal conditions have been established for the determination of tin. An electronically modulated electrodeless discharge tube excited at 2450 MHz is used as source. Measurement of the fluorescence emission at 303.4 nm in a nitrogen-separated Ar/O2/H2 flame gives a detection limit of 0.1 p.p.m. under almost entirely interference-free conditions. Good analytical curves are obtained in the range 0.5-250 p.p.m. Sn. Of 34 elements examined at 100-fold concentrations, only Ca, Mg, Mo, Sr and U interfered. © 1969.