Figure 6
From: Evaluation of an on-site surface enhanced Raman scattering sensor for benzotriazole
BTAH wastewater spectrum taken with the Kaiser system and the substrate SilAg. On the right side, the spectrum around the triazole stretching mode is magnified, showing the evolution with increasing concentration. (a) Pure BTAH as reference. (b–d) Decreasing concentration of BTAH from 35.2 over 17.6 to \(8.80\,\mu g/l\), respectively. (e) Pure SilAg substrate.
