Research Article

Solid-Phase Extraction of Trace Amounts of Uranium(VI) in Environmental Water Samples Using an Extractant-Impregnated Resin Followed by Detection with UV-Vis Spectrophotometry

Table 3

Effect of foreign ions on the determination of 7.0 μg of U(VI) in 1,500-mL aliquots of the solution.

Foreign ionTolerance ratio

Na+, K+, Mg2+, Ca2+, Ba2+, Zn2+, , Cl, I, Co2+, Sr2+5000
, Pb2+, , Mn2+, Cd2+3000
, Citrate 1000
Ag+500
Ni2+300a
Ce3+200
Th4+200b
Cu2+150a
Zr4+, La3+100
Fe3+80
Ni2+5
Cu2+2
Th4+1

In the presence of potassium cyanide (  M).
bIn the presence of EDTA (  M).