Figure 5
From: Use of nano gold obtained by laser ablation for SEIRA analyses of colorants
SEIRA analyses performed applying 1 μL of 10 −4M AO7 solution over the aggregated AuNPs spot obtained after 3 depositions. a) SEIRA spectrum registered on the border of the drop (blue profile), RAS spectrum registered on the border of a drop obtained spotting 1 μL AO7 10−4 M solution (green profile) and RAS spectrum registered on the border of a drop obtained spotting 1 μL of the aggregated AuNPs solution (red profile), common scale b) SEIRA spectrum registered on the border of the drop (blue profile) and RAS spectrum registered on the border of a drop obtained spotting 1 μL AO7 10−3 M solution (red profile), full scale.