Table 1: The composition of alloys determined by AAS and XRF techniques.

Theoretical concentrationExperimental concentration ofExperimental concentration of
Alloyof elementelement by AASelement by XRFTotal
PbSPbSPbS

Pb0.50S0.500.500.500.500.500.5000.5001.0
Pb0.51S0.490.510.490.4900.5100.5100.4901.0
Pb0.52S0.480.520.480.5200.4800.5200.4801.0
Pb0.54S0.460.540.460.5500.4500.5470.4531.0
Pb0.55S0.450.550.450.5550.4450.5500.4501.0