A new technique is presented for detecting dibasic aromatic acids on an SERS-inactive oxidized aluminium foil by utilizing near-infrared Fourier-transform surface-enhanced Raman spectroscopy (NIR-FT-SERS). Identification of adsorbed ortho-, meta- and para-phthalic acids on a typical anodic foil of electrolytic capacitors From electrolytes containing 1 ppm substrate was successfully accomplished.
Godkänd; 1997; 20080512 (bajo)