Table 2 Effects of the matrix ions on the recoveries of the examined metal ions.
Potentially interfering ion/analyte fold ratio | |||||
|---|---|---|---|---|---|
Added salt | Potentiall interfering species | Cu(II) | Ni(II) | Cd(II) | Cr(III) |
NaCl | Na+, | 12000 | 12000 | 12000 | 10000 |
KCl | K+, | 12000 | 12000 | 12000 | 10000 |
NaCl | Cl- | 12000 | 12000 | 12000 | 10000 |
Na2SO4 | SO42- | 12000 | 12000 | 12000 | 10000 |
NaNO3 | NO3- | 12000 | 12000 | 12000 | 10000 |
C6Na3H5O7.2H2O | C6H5O73- | 12000 | 12000 | 12000 | 10000 |
C4Na2H4O6.2H2O | C4H4O62- | 12000 | 12000 | 12000 | 10000 |
Na2C2O4 | C2O42- | 12000 | 12000 | 12000 | 10000 |
Na2CO3 | CO32- | 12000 | 12000 | 12000 | 10000 |
Ca3(PO4)2 | PO43- | 12000 | 10000 | 10000 | 10000 |
NH4Cl | NH4+ | 500 | 400 | 300 | 300 |
Ca3(PO4)2 | Ca2+ | 500 | 400 | 300 | 300 |
BaCl2 | Ba2+ | 12000 | 10000 | 10000 | 10000 |
MgCl2 | Mg2+ | 12000 | 10000 | 10000 | 10000 |
Al(NO3)3 | Al3+ | 12000 | 12000 | 12000 | 12000 |
Mn(NO3)2 | Mn2+ | 12000 | 12000 | 12000 | 12000 |
Co(NO3)2 | Co2+ | 100 | 70 | 100 | 100 |
Zn(NO3)2 | Zn2+ | 100 | 70 | 100 | 100 |
FeCl3 | Fe3+ | 80 | 70 | 25* | 50 |
Humic acid | Humic acid | 50 | 65 | 70 | 60 |
Fulvic acid | Fulvic acid | 55 | 50 | 45 | 45 |