RT info:eu-repo/semantics/article
T1 New screen-printed electrodes for Raman spectroelectrochemistry. Determination of p-aminosalicylic acid
A1 Romay, L.
A1 Núñez Marinero, Pello
A1 Perales Rondon, Juan Víctor
A1 Heras Vidaurre, Aránzazu
A1 del Campo, Francisco Javier
A1 Colina Santamaría, Álvaro
K1 Screen-printed electrodes
K1 Raman spectroelectrochemistry
K1 Electrochemistry
K1 EC-SERS
K1 EC-SOERS
K1 4-Aminosalicylic acid
K1 Química analítica
K1 Chemistry, Analytic
K1 Electroquímica
K1 Electrochemistry
AB The availability of new surface enhanced Raman scattering (SERS) substrates is essential to developquantitative analytical methods. Electrochemistry is an easy, fast and reproducible methodology to prepare SERSsubstrates on screen-printed electrodes (SPEs).Results: This work proposes new SPEs based on a three-electrode system all made of silver. Using the same ink forthe whole electrode system facilitates the fabrication process, reduces production costs, and leads to excellentanalytical performance. The results showed that Raman enhancement depends strongly on the type of silver ink.To demonstrate the capabilities of the new electrodes developed, 4-aminosalicylic acid was determined incomplex matrices and in the presence of strong interfering compounds such as salicylic acid and acetylsalicylicacid. The proposed analytical method is based on the electrochemical surface oxidation enhanced Raman scattering (EC-SOERS) strategy. AgCl nanocrystals are generated on the working electrode surface, which amplify the Raman signal of 4-aminosalicylic acid. Good figures of merit were obtained both in the absence and in thepresence of the interfering compounds, achieving a correct estimation of a 4-aminosalicylic test sample incomplex matrices.Significance: The new SPEs have been demonstrated to be very sensitive and reproducible which, together to thehigh specificity of the Raman signal, makes this methodology very attractive for chemical analysis.
PB Elsevier
SN 0003-2670
YR 2024
FD 2024-10
LK http://hdl.handle.net/10259/10193
UL http://hdl.handle.net/10259/10193
LA eng
NO Ministerio de Ciencia e Innovacion ´ and Agencia Estatal de Inves tigacion ´ (MCIN/AEI/10.13039/501100011033, PID2020-113154RBC21, PID2020-113154RB-C22), Junta de Castilla y Leon ´ and European Regional Development Fund (Grant number: BU036P23), Ministerio de Ciencia, Innovacion ´ y Universidades (RED2022-134120-T) are grate fully acknowledged for funding this work. L.R. acknowledges Ministerio de Ciencia e Innovacion ´ and Agencia Estatal de Investigacion ´ (MCIN/ AEI/10.13039/501100011033, PIS2020-113154 GB-C21) for the pre doctoral contract.
DS Repositorio Institucional de la Universidad de Burgos
RD 22-feb-2025