Surface-Enhanced Raman Vapor Dosimeter

Abstract

This paper describes a new direct-reading personal dosimeter designed to detect vapors of organic chemicals. The device employs the surface-enhanced Raman scattering (SERS) technique for direct measurement of the amount of analyte collected on the dosimeter, requiring no sample desorption or wet-chemical extraction procedure. The time-weighted average exposure to the chemical vapors can be determined on the dosimeter substrate. The results with benzoic acid used as the model compound illustrate the usefulness of this SERS-based dosimeter.

Review of Surface Enhanced Raman Scattering Applications in Forensic Science

“…212 A dosimeter was developed for the rapid detection of chemicals without the need for sample collection and extraction. 211,213 Gao et al proposed a chemical transformation of phosgene agents into the less toxic iodine (I 2 ) respecting stoichiometric proportions, followed by quantitation by silver nanoparticles SERS. 214 Fire Accelerants.…”

Surface-enhanced Raman detection of chemical vapors with the use of personal dosimeters

“…35 It was demonstrated that the dosimeter exhibited a linear response of SERS signal as a function of exposure time to 100 ppb benzoic acid over an 8-h of substrate saturation over the 8-h period, the results demonstrated that the dosimeter may be used for quantitative applications where daily occupational exposure of workers for 8-h workday shifts is monitored.…”

O efeito SERS na análise de traços: o papel das superfícies nanoestruturadas

“…Mesmo antes dos registros dos espectros SERS de uma única molécula realizados independentemente por Nie e Emory 6 e Kneipp et al 7 , associados a intensificações do sinal Raman da ordem de 10 14 , as potencialidades analíticas desta técnica já se mostravam evidentes. Várias áreas, nas quais a análise de traços se faz necessária, investiram na caracterização de sistemas de interesse através da técnica SERS.…”