Detection of polycyclic aromatic hydrocarbon (PAH) compounds in artificial sea-water using surface-enhanced Raman scattering (SERS)

Type Article
Date 2009-07
Language English
Author(s) Peron Olivier1, Rinnert EmmanuelORCID1, Lehaitre Michel1, Crassous Philippe2, Compere ChantalORCID1
Affiliation(s) 1 : IFREMER, Serv Interfaces & Capteurs, F-29280 Plouzane, France.
2 : IFREMER, Lab Environm Profond, F-29280 Plouzane, France.
Source Talanta (0039-9140) (Elsevier), 2009-07 , Vol. 79 , N. 2 , P. 199-204
DOI 10.1016/j.talanta.2009.03.043
WOS© Times Cited 85
Keyword(s) Sensor, Sea water, PAH detection, SERS, Silanization, Gold nanoparticles
Abstract This paper reports an accurate synthesis of surface-enhanced Raman scattering (SERS) active substrates, based on gold colloidal monolayer, suitable for in situ environmental analysis. Quartz substrates were functionalized by silanization with (3-mercaptopropyl)trimethoxysilane (MPMS) or (3-aminopropyl)trimethoxysilane (APTMS) and they subsequently reacted with colloidal suspension of gold metal nanoparticles: respectively, the functional groups SH and NH2 bound gold nanoparticles. Gold nanoparticles were prepared by the chemical reduction of HAuCl4 using sodium tricitrate and immobilized onto silanized quartz substrates. Active substrate surface morphology was characterized with scanning electron microscopy (SEM) measurements and gold nanoparticles presented a diameter in the range 40-100 nm. Colloidal hydrophobic films. allowing nonpolar molecule pre-concentration, were obtained. The surfaces exhibit strong enhancement of Raman scattering from molecules adsorbed on the films. Spectra were recorded for two PAHs, naphthalene and pyrene, in artificial sea-water (ASW) with limits of detection (LODs) of 10 ppb for both oil MPMS silanized substrates. (C) 2009 Elsevier B.V. All rights reserved.
Full Text
File Pages Size Access
publication-6616.pdf 10 712 KB Open access
Top of the page