In H 2SO 4-H 2C 2O 4 medium, a sensitive absorption complex wave Sn(IV)-DPG could be obtained by single sweep oscillopolarography.

• 在H2SO4－H2C2O4介质中，用单扫描示波极谱法，Sn（IV）－DPG体系可产生灵敏的络合吸附波。