Microchimica Acta

, Volume 183, Issue 4, pp 1367–1373 | Cite as

Photometric and visual detection of Cr(VI) using gold nanoparticles modified with 1,5-diphenylcarbazide

  • Li Liu
  • Yumin Leng
  • Hengwei LinEmail author
Original Paper


The authors report on a colorimetric method for the determination of Cr(VI) using gold nanoparticles (AuNPs) modified with the reagent 1,5-diphenylcarbazide (DPC). The detection scheme is based on the well-known redox reaction that occurs between DPC (on the AuNPs) and Cr(VI) ion, this followed by complexation between oxidized DPC and Cr(III). This complexation then triggers aggregation of the AuNPs and a color change from red to blue. The method is highly selective for Cr(VI) and has a 0.3 μM limit of detection which is much lower than the maximal permitted level in drinking water (i.e. ~1 μM) as regulated by the Chinese Ministry of Environmental Protection. The assay was applied to the rapid determination of Cr(VI) in real environmental water and seafood samples.

Graphical Abstract

A colorimetric assay for Cr(VI) is reported that is using gold nanoparticles (AuNPs) modified with 1,5-diphenylcarbazide (DPC). The detection scheme is based on the redox reaction between DPC and Cr(VI), followed by complexation between oxidized DPC (DPCO) and Cr(III). The assay was applied to the determination of Cr(VI) in environmental water and seafood samples.


Surface plasmon resonance absorption Transmission electron microscopy Dynamic light scattering Water analysis Seafood analysis 



The authors acknowledge the Natural Science Foundation of China (21277149), Zhejiang Provincial Natural Science Foundation of China (LR13B050001) and the Ningbo Science and Technology Bureau (2014B82010) for supporting this work.

Compliance with ethical standards

The author(s) declare that they have no competing interests

Supplementary material

604_2016_1777_MOESM1_ESM.docx (658 kb)
ESM 1 (DOCX 657 kb)


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Copyright information

© Springer-Verlag Wien 2016

Authors and Affiliations

  1. 1.Ningbo Institute of Materials Technology and Engineering (NIMTE)Chinese Academy of SciencesNingboChina

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