accumulation in stripping voltammetry

synonym: accumulation
https://doi.org/10.1351/goldbook.09150
Transfer of an analyte from a test solution to an electrode surface as the first step in stripping voltammetry.
Note: Analyte accumulation can be achieved by the following methods:
  1. electrodeposition of metal atoms onto a solid electrode,
  2. reduction of metal ions on a mercury electrode and dissolution of the formed metal atoms in the mercury (amalgam formation),
  3. precipitation of sparingly soluble mercuric, mercurous, or silver salts on mercury or silver electrodes,
  4. precipitation of metal oxides, hydroxides, or other insoluble salts on an inert (usually noble metal or carbon) electrode,
  5. chemical reaction of an analyte with an electrode material,
  6. adsorption of electroactive organic substances,
  7. adsorption of complexes of metal ions with organic ligands,
  8. synergistic adsorption of complexes,
  9. anion-induced adsorption of metal ions,
  10. surface complexation of metal ions,
  11. ion-exchange reactions at surface-modified electrodes,
  12. extraction by ion transfer across the interface of two immiscible electrolyte solutions,(m) reaction by biological recognition processes involving nucleic acids, antibodies, enzymes, etc.
Example: \(\pu{50 to 150 nm}\) magnetic particles of gold-coated \(\ce{Fe3O4}\), modified with the tripeptide \(\ce{Gly-Gly-His}\) to capture \(\ce{Cu^{2+}}\). Particles are then returned to an electrode surface by a magnetic field.
Source:
PAC, 2020, 92, 641. 'Terminology of Electrochemical Methods of Analysis (IUPAC Recommendations 2019)' on page 680 (https://doi.org/10.1515/pac-2018-0109)