We present a promising approach to the electroanalytical detection of a specific nitroaromatic explosive in landfill leachates (LLs) that originated from a municipal solid waste plant. The paper is focused but not limited to the sensing of 4,4',5,5'-tetranitro-1H,1'H-2,2'-biimidazole (TNBI) using differential pulse voltammetry and cyclic voltammetry. Highly electroactive nanocarbon was applied to determine low concentrations of the analyte in the complex interfering matrix as leachate samples. The mechanism of nitro- group reduction is attributed to the sensing effect, as revealed in the voltammograms of TNBI. The developed sensor model has two linear regions extending from 0.02 ppm to 1.4 ppm and from 2 ppm to 16 ppm resulting from adsorption and diffusion-controlled processes, respectively. The limit of detection was as low as 0.52 ppm (1.66 μM L-1) thanks to the electrochemical performance of the joint effect of the diamond/graphene composite nanowall surface.
Authors
- dr inż. Anna Dettlaff link open in new tab ,
- dr inż. Paweł Jakóbczyk link open in new tab ,
- dr hab. inż. Michał Sobaszek link open in new tab ,
- dr inż. Mateusz Ficek link open in new tab ,
- dr inż. Bartłomiej Dec link open in new tab ,
- prof. dr hab. inż. Aneta Łuczkiewicz link open in new tab ,
- dr Mateusz Szala,
- dr Jacek Wojas,
- prof. dr hab. inż. Tadeusz Ossowski,
- dr hab. inż. Robert Bogdanowicz link open in new tab
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.1109/jsen.2020.2973451
- Category
- Publikacja w czasopiśmie
- Type
- artykuły w czasopismach
- Language
- angielski
- Publication year
- 2020
