铟—PAR络合吸附波的极谱行为研究

Polarographic Investigation of Complex of Indium—PAR

本文介绍了在0.09mol/L NH_3·H_20—0.21mol/L NH_4Cl介质中,当有8×10^(-5)mlo/L PAR存在时,In^(3+)在—0.85V(vs.S·C·E·)处产生一灵敏的络合吸附波,其线性范围为0.1～0.8μg/ml。对这一络合吸附波的性质进行了研究,并测定了该络合物的组成。利用In—PAR络合吸附的极谱行为进行了纯铅中微量铟的加入回收实验,测定了合成样品中的微量铟。

In 0.09mol/L NH_3?H_2O-0.21mol/L NH_4Cl(pH=9.15)supporting electrolyte containing 8×10_(-5) mol/L PAR an adsorpticn complex wave of In-PAR is observed by single-sweep polarography. The peak potential of the wave is-0. 85V(vs. SCE). The peak current is proportional to the indium concentration over the range of 0.1μg/ml-0.8μg/ml. The composition of the complex has been determined. The analytical application of the method is also introduced.