Acta Chimica Sinica ›› 2005, Vol. 63 ›› Issue (12): 1075-1080. Previous Articles     Next Articles

Original Articles



  1. (华东师范大学化学系 上海 200062)
  • 投稿日期:2004-12-14 修回日期:2005-02-22 发布日期:2010-12-10
  • 通讯作者: 金利通

Preparation of PVP-capped CdS Quantum Dot Modified Electrode and Its Application to the Determination of Hemoglobin

LI Ping, LIU Mei-Chuan, ZHANG Cheng-Lin, CHENG Yu-Xiao, ZHANG Li, JIN Li-Tong*   

  1. (Department of Chemistry, East China Normal University, Shanghai 200062)
  • Received:2004-12-14 Revised:2005-02-22 Published:2010-12-10
  • Contact: JIN Li-Tong

Polyvinylpyrrolidone (PVP)-capped CdS semiconductor nanocrystals (quantum dots, QDs) were prepared and used to modified glass carbon electrode. The electrochemical behaviors of hemoglobin on PVP/CdS QD modified electrode were studied. The results showed that hemoglobin exhibited good current responses to the electrode. In addition, the results of flow injection analysis further suggested high stability and reproducibility of PVP/CdS QD modified electrode. The peak currents were linear to the concentrations of hemoglobin ranging from 1.0×10-8 to 2.0×10-5 mol/L with the correlation coefficient of 0.9986 and the detection limit of 5.0×10-9 mol/L. The method was applied to the determination of hemoglobin of whole blood and satisfied results were also achieved.

Key words: cadmium sulfide, polyvinylpyrrolidone, quantum dot, hemoglobin