Issue 100, 2015

SERS-active Au NR oligomer sensor for ultrasensitive detection of mercury ions

Abstract

In this study, we developed a sensitive surface-enhanced Raman scattering (SERS) sensor based on a self-assembled Au NR oligomer for the detection of mercury ions (Hg2+) in aqueous solution. Taking advantage of the high sensitivity of Raman spectroscopy and high specificity of the T–Hg2+–T base pair, the method was used in ultratrace analysis of Hg2+ in real water samples. The developed Hg2+ detection method showed an excellent linear range from 5 to 5000 pM and a limit of detection (LOD) of 4.3 pM (0.86 pg mL−1). The recovery experiment presented excellent recovery ranging from 88.98%–105.76%, and demonstrated that the sensor could be used to monitor the concentration of Hg2+ for environmental water.

Graphical abstract: SERS-active Au NR oligomer sensor for ultrasensitive detection of mercury ions

Article information

Article type
Communication
Submitted
23 Jul 2015
Accepted
22 Sep 2015
First published
22 Sep 2015

RSC Adv., 2015,5, 81802-81807

SERS-active Au NR oligomer sensor for ultrasensitive detection of mercury ions

X. Wu, L. Tang, W. Ma, L. Xu, L. Liu, H. Kuang and C. Xu, RSC Adv., 2015, 5, 81802 DOI: 10.1039/C5RA14593G

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