Fig. 1. Effect of spectral working parameters on fluorescence intensity and signal-to-noise ratio
(a): Negative high voltage; (b): Lamp current; (c): Observation height; (d): Carrier gas flow; (e): Shielding gas flow

Fig. 2. Effect of acidity in solution on fluorescence intensity
(a): Solution; (b): Carrier

Fig. 3. Effect of potassium borohydride concentration on fluorescence intensity

Fig. 4. Effect of iron matrix on fluorescence intensity

Fig. 5. Effect of coexisting ions on the determination of tellurium
(a): Chromium; (b): Nickel; (c): Manganese; (d): Copper; (e): Molybdenum; (f): Tungsten; (g): Titanium; (h): Silicon; (i): Vanadium

Fig. 6. Calibration curve