“…115,221,222 To increase the effectiveness of this approach and shorten the treatment time, the washing process is sometimes accompanied by sonication. [223][224][225] This approach has typically been demonstrated with model dye molecules, such as rhodamine 6G and malachite green, 222,224,225 which are adsorbed on the surface of the enhancing substrate through weak electrostatic attraction but has also been demonstrated with less effectiveness for more strongly adsorbing analytes, such as thiram. 115,221 Strongly adsorbed analytes can be fully removed from the enhancing surface via thermal treatment.…”