Ej. Liang et al., SURFACE-ENHANCED RAMAN-SPECTRA OF FULVIC AND HUMIC ACIDS ON SILVER NITRATE-MODIFIED FE-C-CR-NI SURFACE, Journal of environmental science and health. Part A: Environmental science and engineering, 31(10), 1996, pp. 2477-2486
Highly resolved SERS spectra of fulvic and humic acids had been observ
ed by spreading trace amount of the samples on silver nitrate-modified
Fe-C-Cr-Ni surfaces. The results imply that the ''building blocks'' o
f humic substances are low structurally graphite-like carbons.