Table 10: Tolerance limit of foreign ions (μg mL−1).

Diverse ionZero orderSecond derivativeThird derivative

Th(IV)65535
U(VI)54045
Mn(II)56020
Cu(II)28045
Ni(II)<13050
Zn(II)<14520
Sn(II)<12518
In(III)<11528
Ga(III)<12035
V(V)<11520