2026-05-15T09:51:05Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/82212023-12-20T01:05:21Zcom_10259_4376com_10259_5086com_10259_2604com_10259_4354col_10259_4377col_10259_4355

Revilla Cuesta, Andrea Abajo Cuadrado, Irene Medrano, María Martín Salgado, Mateo Pecori, Giuditta Rodríguez Rodríguez, Mª Teresa Hernando Muñoz, Carla García Calvo, José Arcos Martínez, Julia Torroba Pérez, Tomás 2023-12-19T11:38:09Z 2023-12-19T11:38:09Z 2023-10 1010-6030 http://hdl.handle.net/10259/8221 10.1016/j.jphotochem.2023.114911 We describe the proof of concept of a portable testing setup for the detection of trinitrotoluene (TNT), a common component in hidden explosive devices. The system allows for field-testing and generation of real-time results to test for TNT traces in surfaces by simply using a filter paper and a fluorescent reporter. In this way, the controlled trapping and detection of the analyte by a chemical sensor gives reliable results at extremely low concentrations of TNT on surfaces under real life conditions suitable for daily use in ordinary sampling for example at airlines luggage storage or sport locker rooms. The reported fluorescent methodology is very sensitive and selective, allowing for the trapping and detection of TNT by a fluorescent reporter to give reliable results at very low concentrations. As a complement, we report the preparation of a modified Sylgard film that is useful under real conditions for qualitative fluorescent detection of hidden traces of TNT on surfaces or fingers by a swab method. The combination of quantitative and qualitative detection of TNT traces on surfaces constitutes a comprehensive new method for the detection of hidden nitroaromatic explosives in the workplace. This research was funded by the NATO Science for Peace and Security Programme (Grant SPS G5536) and the Ministerio de Ciencia e Innovación (Grants PID2019-111215RB-I00 and PDC2022-133955-I00). A. R. C. thanks Secretaría General de Universidades for a FPU18/03225 Grant. application/pdf eng Elsevier Journal of Photochemistry and Photobiology A: Chemistry. 2023, V. 444, 114911 https://doi.org/10.1016/j.jphotochem.2023.114911 Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess 2,4,6-Trinitrotoluene Improvised explosive devices Chemical sensors Fluorescent materials Chemical tests Swab alternatives Química orgánica Chemistry, Organic New fluorescent reporters capable of Ultra-sensitively detecting trinitrotoluene on surfaces: A proof-of-concept for finding hidden nitroaromatics in the workroom info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Journal of Photochemistry and Photobiology A: Chemistry 444 114911