Naturally Grown Ag Nanopartiele SERS Substrate As Chemical Sensor in Fresh Water Applying 488 nm Microsystem Laser Diode

作者：Kwon Yong Hyok^*; Kolomijeca Anna; Kronfeldt Heinz Detlef; Ossig Robert; Hubenthal Frank

来源：International Journal of Offshore and Polar Engineering, 2013, 23(2): 89-95.

• Ag nanoparticle
• SERS
• SERDS
• PAHs
• water
• Raman signal response

For in-situ monitoring of polycyclic aromatic hydrocarbons (PAHs) in fresh water that flows from rivers into the oceans, a chemical sensor based on surface enhanced Raman spectroscopy (SERS) is well suited for a rapid identification and quantification of these substances. The laboratory set-up contains a microsystem light source at 488 nm suited for shifted excitation Raman difference spectroscopy (SERDS) and also a SERS substrate with a Ag nanoparticle ensemble with a plasmon resonance wavelength around 488 am. SERS applying SERDS (SERS/SERDS) measurements of water samples containing 2 PAHs (pyrene and fluoranthene) showed Raman signals at 2 nmol/l and 1 nmol/l of concentration.

• 出版日期2013-6