Imperial College London

Professor Joshua B. Edel

Faculty of Natural SciencesDepartment of Chemistry

Professor of Biosensing & Analytical Sciences



+44 (0)20 7594 0754joshua.edel Website




Mrs Althea Hartley-Forbes +44 (0)20 7594 5717




442AChemistrySouth Kensington Campus






BibTex format

author = {Panich, S and Wilson, K and Edel, JB},
pages = {1556--1558},
title = {Trace heavy metal analysis using whispering gallery mode sensing},
year = {2013}

RIS format (EndNote, RefMan)

AB - A Whispering Gallery Mode (WGM) resonator assay for the detection of trace levels of Pb2+ was demonstrated. The platform consists of a glass microspheres decorated with glutathione (GSH)-modified gold nanoparticles (GNPs). In our study, GSH was used as a chelator to provide high specificity to Pb2+. When the surface of the microsphere was exposed to Pb 2+ with the assistance of a fluidic cell, the resonant mode shifts to longer wavelengths. The shift is found to be proportional to the concentration of Pb2+ at concentrations as low as 10 ppt making this technique versatile for portable in-field environmental monitoring.
AU - Panich,S
AU - Wilson,K
AU - Edel,JB
EP - 1558
PY - 2013///
SP - 1556
TI - Trace heavy metal analysis using whispering gallery mode sensing
ER -