DETECTION OF THE PESTICIDE THIABENDAZOLE (TBZ) USING ELECTRODEPOSITED GOLD FILMS

Bruna Bresciani; Éverton Fabian Jasinski; Helen Merisio; Leonardo Negri Furini

Todos os Trabalhos

Trabalho

Título do Trabalho

DETECTION OF THE PESTICIDE THIABENDAZOLE (TBZ) USING ELECTRODEPOSITED GOLD FILMS

Autores

Bruna Bresciani
Éverton Fabian Jasinski
Helen Merisio
Leonardo Negri Furini

Modalidade

Pôster - resumo

Área temática

Sensores e biossensores

Data de Publicação

27/05/2026

País da Publicação

Brasil

Idioma da Publicação

pt-BR

Página do Trabalho

https://www.even3.com.br/anais/workshop-do-ineo-2026/1460015-detection-of-the-pesticide-thiabendazole-(tbz)-using-electrodeposited-gold-films

ISBN

978-65-272-2467-9

Palavras-Chave

Thiabendazole, Electrodeposition, Gold Films

Resumo

Thiabendazole (TBZ) is a widely used fungicide in fruit and vegetable crops, and its residues may pose risks to human health. The development of rapid and sensitive detection methods is therefore essential for food safety and environmental monitoring. In this work, we report the fabrication of gold-based SERS (Surface-Enhanced Raman Scattering) substrates obtained by potentiostatic electrodeposition for the detection of TBZ at low concentrations. Gold films were electrodeposited at a constant potential of -0.95 V versus a saturated calomel electrode (SCE) in a conventional three-electrode electrochemical cell. Two electrolyte compositions were investigated: (i) 100 mmol L?¹ KCl and 1.4 mmol L?¹ HAuCl4 (standard gold deposition bath), and (ii) the same solution with the addition of 1 mL of a 1.0 × 10?³ mol L?¹ TBZ solution, aiming to promote the incorporation of the analyte during film growth. After deposition, the substrates were immersed in a 1.0 × 10?5 mol L?¹ TBZ solution in ethanol for 24 h and subsequently dried under ambient conditions. Raman spectra revealed the characteristic vibrational bands of TBZ at 781, 1014, 1282, 1459, and 1582 cm?¹, confirming the SERS activity of the substrates. Films electrodeposited in the presence of TBZ exhibited improved analytical performance, with enhanced signal reproducibility and reduced spectral noise. These results suggest that the incorporation of TBZ during electrodeposition influences the nanostructure and surface activity of the gold films, promoting the formation of more homogeneous and SERS-efficient substrates. The proposed approach demonstrates potential for sensitive pesticide detection using electrochemically engineered plasmonic platforms. Acknowledgements: INEO, FAPESP (2025/27044-5), CAPES and CNPq (408449/2024-1). References: MOLDOVAN, R. C. et al. EC-SERS detection of thiabendazole in apple juice using activated screen-printed electrodes. Food Chemistry, v. 405, Pt A, p. 134713, 2023. DOI: 10.1016/j.foodchem.2022.134713. OLIVEIRA M.J.d.S. et al. Consequences of Surface Composition and Aggregation Conditions of Ag Nanoparticles on Surface-Enhanced Raman Scattering (SERS) of Pesticides. Chemosensors 2025. 13. 13. SELIGMAN, L. Electrodeposition of Metallic Multilayers on Silicon. 2002. Doctoral Thesis (Ph.D. in Materials Engineering) – Federal University of Santa Catarina, Florianópolis, 2002.

Título do Evento: Workshop do INEO 2026
Cidade do Evento: Nazaré Paulista
Título dos Anais do Evento: Anais do Workshop do INEO 2026
Nome da Editora: Even3
Meio de Divulgação: Meio Digital

Como citar

BRESCIANI, Bruna et al.. DETECTION OF THE PESTICIDE THIABENDAZOLE (TBZ) USING ELECTRODEPOSITED GOLD FILMS.. In: Anais do Workshop do INEO 2026. Anais...Nazaré Paulista(SP) Hotel Estância Atibainha, 2026. Disponível em: https//www.even3.com.br/anais/workshop-do-ineo-2026/1460015-DETECTION-OF-THE-PESTICIDE-THIABENDAZOLE-(TBZ)-USING-ELECTRODEPOSITED-GOLD-FILMS. Acesso em: 10/08/2026