Rapid and sensitive detection of malachite green in aquaculture water by electrochemical preconcentration and surface-enhanced Raman scattering

Talanta. 2018 Apr 1:180:383-388. doi: 10.1016/j.talanta.2017.12.079. Epub 2017 Dec 26.

Abstract

A highly sensitive and rapid method of in-situ surface-enhanced Raman spectroscopy (SERS) combining with electrochemical preconcentration (EP) in detecting malachite green (MG) in aquaculture water was established. Ag nanoparticles (AgNPs) were synthesized and spread onto the surface of gold electrodes after centrifuging to produce SERS-active substrates. After optimizing the pH values, preconcentration potentials and times, in-situ EP-SERS detection was carried out. A sensitive and rapid analysis of the low-concentration MG was accomplished within 200s and the limit of detection was 2.4 × 10-16M.

Keywords: Aquaculture water; Electrochemical preconcentration (EP); Malachite green; Surface-enhanced Raman spectroscopy (SERS).

Publication types

  • Evaluation Study

MeSH terms

  • Aquaculture
  • Coloring Agents / analysis*
  • Coloring Agents / isolation & purification
  • Electrochemical Techniques / instrumentation
  • Electrochemical Techniques / methods
  • Equipment Design
  • Limit of Detection
  • Metal Nanoparticles / chemistry
  • Metal Nanoparticles / ultrastructure
  • Rosaniline Dyes / analysis*
  • Rosaniline Dyes / isolation & purification
  • Silver / chemistry
  • Spectrum Analysis, Raman / instrumentation
  • Spectrum Analysis, Raman / methods*
  • Water / analysis*
  • Water Pollutants, Chemical / analysis*
  • Water Pollutants, Chemical / isolation & purification

Substances

  • Coloring Agents
  • Rosaniline Dyes
  • Water Pollutants, Chemical
  • Water
  • malachite green
  • Silver