Alex Tarancón Sanz, researcher at the Universitat de Barcelona and member of the QUESTRAM research group, participated in the 20th Radiochemical Conference (RadChem 2026), held in Mariánské Lázně (Czech Republic) from 10–15 May 2026. RadChem is one of the leading international conferences in radiochemistry and nuclear chemistry, bringing together experts from academia, research institutions, and industry to discuss the latest advances in radionuclide science, radiochemical methods, nuclear fuel cycle chemistry, environmental radioactivity, and radiopharmaceutical applications. During the conference, Alex Tarancón delivered the oral presentation: “From linear/impregnated to crosslinked/porous/covalent grafted plastic scintillation resins: a robust plastic scintillator platform for high capacity separation and on-column detection of radionuclides.” The work, coauthored by Héctor Bagán and Arnau Coma, presented recent advances in the development of plastic scintillation resins (PSresins) designed to combine radionuclide separation and direct radiometric detection within a

On 3rd November 2025, the Assessor Committee of the Proficiency Testing Scheme for Waste Characterisation met in the Faculty of Chemistry of University of Barcelona to review the development of the 2025 program. Technical staff from Mat Control together with representatives from Centre d’Estudis de la Construcció i Anàlisi de Materials (CECAM), Empresa Municipal Mixta d’Aigües de Tarragona (EMATSA), Laboratori de l’Agència de Residus de Catalunya (ARC) and Tecnoambiente, evaluated the overall performance of the scheme and highlighted the excellent progression and fulfilment of the objectives. As a part of the program review, the Committee also discussed the upcoming Final Technical Meeting of PT Wastes 2025, which will be held on-line on 19th November 2025 and is open to all participating centers. The samples and parameters proposed for Program 2026 are the following: With these parameters, the

Participation of Anna Rigol in the REM proficiency test workshop: Radioactivity Environmental monitoring building material proficiency test and Training course on measurement of radioactivity in building materials, held in the Joint Research Centre Geel in September 2024. Visit to the laboratory for ultralow-level radioactivity measurements inside the 225 m deep underground laboratory HADES.

Our group participated in the Raddec-Triskem technical workshop in Porstmouth (UK) held in April 18th 2024, with an oral presentation of Alex Tarancón, who explained the recent development and application of PSResin.

Our group participated in the 25th International Conference on Advances in Liquid Scintillation Spectrometry (LSC 2024) In Portsmouth (UK), with oral presentations of Héctor Bagán, Isaac Giménez and Arnau Coma, and a poster presentation of Yun Zhow.