TABLE X

Average ICP/MS Results from Water and Ethanol Extracts from Filter Capsule

ElementsWater Extract
Ethanol Extract
LOD (ppb)Calibration Curve (r2)Recoverya (%)Concentrationb (ppb)LOD (ppb)Calibration Curve (r2)Recoverya (%)Concentrationb (ppb)
Na0.0201.00001032832.210.999994.0157
Mg0.0301.00001002.732.141.000090.0< DL
Al0.0201.00001056.091.870.999990.0< DL
K0.0201.00001020.642.361.000091.0< DL
Ca0.0500.999910622.22.570.999910334.1
Cu0.0301.00001042.201.350.999991.0< DL
Zn0.1000.999994.0< DL1.121.00001002.25

  • ↵a Standard solutions containing elements in concentration of 1 to 5 ppb were used.

  • ↵b The results were corrected with negative control values.