TABLE II

Matrix Effect of Syringe Extract on Elemental Tungsten Quantification

Syringe Extract with Tungsten Spike at:
0 μg/L W1 μg/L W10 μg/L W100 μg/L W
Tungsten (μg/L)6.27.115.8102.1
Recovery* (%)–909696

  • ↵* Recovery (%) = [(W of Spiked – W of None)/Theoretical W] × 100.