First Steps of in Situ Surface-Enhanced Raman Scattering During Shipboard Experiments

作者：Peron Olivier; Rinnert Emmanuel^*; Colas Florent; Lehaitre Michel; Compere Chantal

来源：Applied Spectroscopy, 2010, 64(10): 1086-1093.

• Surface-enhanced Raman scattering
• SERS
• Chemosensors
• Flow cells
• Shipboard experiments
• In situ measurements
• Freundlich isotherm

It is shown that the surface-enhanced Raman scattering (SERS) technique can be applied to detect organic molecules during in situ experiments. To this purpose, we used trans-1,2-bis(4-pyridyl)ethylene (BPE) as a target molecule. Adsorbed on the SERS chemosensor surface and excited under laser, the vibration modes of the molecules can be identified. SERS chemosensors are based on quartz substrates functionalized by silanization and partially coated with gold nanoparticles. SERS measurements during shipboard experiments were made with a home-made in situ Raman spectrometer connected to a marinized micro-fluidic system. The device was designed to host chemosensors in order to ensure measurements with a flow cell. A theoretical limit of detection was estimated in the range of picomolar (pM) concentrations based on Freundlich isotherm calculations.

• 出版日期2010-10