Surface Enhanced Raman Spectroscopy in environmental analysis, monitoring and assessment

The Science of the Total Environment
Timothy T X OngOliver A H Jones

Abstract

Environmental pollution is usually monitored via mass spectrometry-based approaches. Such techniques are extremely sensitive but have several disadvantages. The instruments themselves are expensive, require specialized training to use and usually cannot be taken into the field. Samples also usually require extensive pre-treatment prior to analysis which can affect the final result. The development of analytical methods that matched the sensitively of mass spectrometry but that could be deployed in the field and require minimal sample processing would be highly advantageous for environmental monitoring. One method that may meet these criteria is Surface Enhanced Raman Spectroscopy (SERS). This is a surface-sensitive technique that enhances Raman scattering by molecules adsorbed on rough nanostructure surfaces such as gold or silver nanoparticles. SERS gives selective spectral enhancement such that increases in sensitivity of 1010 to 1014 have been reported. While this means SERS is, theoretically at least, capable of single molecule detection such a signal enhancement is hard to achieve in practice. In this review the background of SERS is introduced for the environmental scientist and the recent literature on the detection of s...Continue Reading

Citations

Oct 3, 2020·The Analyst·Gregory Q Wallace, Jean-François Masson
Nov 24, 2020·Analytical Methods : Advancing Methods and Applications·Shiqiang WangMingwei Tian
Apr 4, 2021·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Faxin YuZhiliang Jiang
Jul 11, 2021·The Review of Scientific Instruments·Dinesh DhankharPeter M Rentzepis
Aug 7, 2021·Biosensors·Irene CalderonRamon A Alvarez-Puebla
Oct 27, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Sravani Kaja, Amit Nag

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