Foreign ions

Tolerance limit (µg∙mL⁻¹)

NaF, NaCl, NaBr, acetate, ascorbic acid tartrate, citrate, oxalate, EDTA, sulfate, chloride, nitrate, phosphate, Iodide,

2000

Ca²⁺, Cr²⁺, Na⁺, K⁺, Ba²⁺, Mg²⁺, Al³⁺, Li⁺

1500

Urea, thiourea

750

Bromate, thiosulphate, Ru⁴⁺, Pt⁴⁺, Cr³⁺, Zr⁴⁺,

650

Bi³⁺, Mn²⁺, Ru³⁺, Pt⁴⁺

500

Ti⁴⁺, Bi³⁺, Sr²⁺

300

Fe³⁺, Cd²⁺, Fe²⁺, V⁵⁺, Mo⁶⁺, Pb²⁺, Mn²⁺, Te⁴⁺, U⁶⁺, Th⁴⁺, W⁶⁺, Ce⁶⁺,

250

Ti⁴⁺, Co²⁺, Ni²⁺, Cu²⁺, Zn²⁺

100 (100 µg∙mL⁻¹ of EDTA)

Ag+, Pd²⁺

<50 (100 µg∙mL⁻¹ of citrate)