Microchimica Acta

, Volume 164, Issue 3–4, pp 453–458 | Cite as

Ultrasensitive determination of Cu2+ by synchronous fluorescence spectroscopy with functional nanoparticles

  • Hong-Qi Chen
  • A-Ni Liang
  • Lun WangEmail author
  • Yan Liu
  • Bin-Bin Qian
Original Paper


A new synchronous fluorescence method was developed for the rapid determination of Cu2+ with functional CdS nanoparticles as a probe, based on the fluorescence quenching of functional CdS. The synchronous fluorescence peak is located at 304 nm, scanning with excitation and emission wavelengths of 255 and 460 nm (Δλ = λ em ‑ λ ex = 205 nm), respectively. Under optimum conditions, a linear relationship was found between the relative synchronous fluorescence intensity and the concentration of Cu2+ in the range 0.09 to 27.0 μg L−1. The limit of detection was 3.2 ng L−1. Compared with other general fluorescent methods for the determination of Cu2+, the proposed method had a wider linear range and improved sensitivity. The quenching mechanism has also been discussed. Moreover, analytical application of the method was successfully demonstrated by analysis water samples.


Synchronous fluorescence Trace Cu2+ determination Nanoparticles 



This work was supported by the Natural Science Foundation of China (20575001) and the Education Commission Natural Science Foundation of Anhui Province (KJ2007B166).

Supplementary material

604_2008_82_MOESM1_ESM.doc (37 kb)
Table S1 Effect of other ions (DOC 37 KB)


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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • Hong-Qi Chen
    • 1
  • A-Ni Liang
    • 1
  • Lun Wang
    • 1
    Email author
  • Yan Liu
    • 1
  • Bin-Bin Qian
    • 1
  1. 1.Anhui Key Laboratory of Chemo-Biosensing, College of Chemistry and Materials ScienceAnhui Normal UniversityWuhuPeople’s Republic of China

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