Recent progress in detection of mercury using surface enhanced Raman spectroscopy — A review

Publication date: Available online 28 December 2015
Source:Journal of Environmental Sciences
Author(s): Zhenli Sun, Jingjing Du, Chuanyong Jing
Concerns over exposure to mercury have motivated the exploration of cost-effective, rapid, and reliable method for monitoring Hg²⁺ in the environment. Recently, surface-enhanced Raman scattering (SERS) has become a promising alternative method for Hg²⁺ analysis. SERS is a spectroscopic technique which combines modern laser spectroscopy with the optical properties of nano-sized noble metal structures, resulting in substantially increased Raman signals. When Hg²⁺ is in a close contact with metallic nanostructures, the SERS effect provides unique structural information together with ultrasensitive detection limits. This review introduces the principles and contemporary approaches of SERS-based Hg²⁺ detection. In addition, the perspective and challenges are briefly discussed.

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