Determination of Indium in Zinc Salt by Polarographic Adsorptive Complex Wave of Indium(Ⅲ)-Quercetin
Li Nanqiang,Liu Yang (Depatment of ChemistTy,Pekig University)
In 0.lmol/L acetate buffer solution,at pH 5,a sensitive adsorptive complex wave of in (Ⅲ)-quercetin can be obtained by using single-sweep polarograpby. The detection limit is down to 5,0×10~(10)mol/L. It was used to detetmine trace indium in zinc salt. The composition of the complex wastin=1:2.The conditonai stability constant was determined as β=6.4×10~8.