Jump to main content
Jump to site search

Issue 5, 2012
Previous Article Next Article

A simple filter-based approach to surface enhanced Raman spectroscopy for trace chemical detection

Author affiliations

Abstract

We demonstrate an extremely simple and practical surface enhanced Raman spectroscopy (SERS) technique for trace chemical detection. Filter membranes first trap silver nanoparticles to form a SERS-active substrate and then concentrate analytes from a mL-scale sample into a μL-scale detection volume. We demonstrate a significant improvement in detection limit as compared to colloidal SERS for the pesticide malathion and the food contaminant melamine. The measured SERS intensity exhibits low variation relative to traditional SERS techniques, and the data can be closely fit with a Langmuir isotherm. Thus, due to the simple procedure, the low-cost of the substrates, the quantitative results, and the performance improvement due to analyte concentration, our technique enables SERS to be practical for a broad range of analytical applications, including field-based detection of toxins in large-volume samples.

Graphical abstract: A simple filter-based approach to surface enhanced Raman spectroscopy for trace chemical detection

Back to tab navigation

Publication details

The article was received on 10 Oct 2011, accepted on 12 Jan 2012 and first published on 26 Jan 2012


Article type: Paper
DOI: 10.1039/C2AN15947C
Citation: Analyst, 2012,137, 1168-1173
  •   Request permissions

    A simple filter-based approach to surface enhanced Raman spectroscopy for trace chemical detection

    W. W. Yu and I. M. White, Analyst, 2012, 137, 1168
    DOI: 10.1039/C2AN15947C

Search articles by author

Spotlight

Advertisements