Data/hora: 19/06/2024 02:17:48

Biblioteca(s): | Embrapa Solos.
Data corrente: | 19/07/2011
Data da última atualização: | 10/06/2024
Autoria: | BAPTISTA-FILHO, M.; RITER, H. G.; SILVA, M. G. da; LUNA, F. J.; WERNECK, C. G.; RECH, I.; POLIDORO, J. C.; MONTE, M. B. M.; SOUZA-BARROS, F.; MIKLOS, A.; VARGAS, H.
Afiliação: | MILTON BAPTISTA-FILHO, UENF; HEITOR GONÇALVES RITER, UENF; MARCELO GOMES DA SILVA, UENF; FERNANDO J. LUNA, UENF; CARLOS GUARINO WERNECK; IONÁ RECH; JOSE CARLOS POLIDORO, CNPS; MARISA BEZERRA MELLO MONTE, CENTRO DE TECNOLOGIA MINERAL; FERNANDO SOUZA-BARROS, UFRJ; ANDRAS MIKLOS, FRAUNHOFER INSTITUT FÜR BAUPHYSIK; HELION VARGAS, UENF.
Título: | Ammonia traces detection based on photoacoustic spectroscopy for evaluating ammonia volatization from natural zeolites at typical crop field temperature.
Ano de publicação: | 2011
Fonte/Imprenta: | Sensors and Actuators B: chemical, v. 158, n. 1, p. 241-245, Nov. 2011.
DOI: | https://doi.org/10.1016/j.snb.2011.06.012
Idioma: | Inglês
Conteúdo: | A Brazilian sedimentary zeolite-containing microporous material was characterized by determining its physical and chemical properties (surface area, pore volume, dinitrogen and ammonia desorption rates, oxide composition, and acid site characterization), and compared with two commercial natural zeolites. The characterization of these materials was performed using N2 adsorption, X-ray fluorescence spectroscopy and temperature programmed desorption (TPD) techniques. Using photoacoustic spectroscopy, the performance of these microporous materials in the adsorption and delayed desorption of nitrogen-containing fertilizers was studied by monitoring the ammonia emission rate after their treatment with ammonium sulfate. Ammonia desorption curves were recorded under 30 °C and 60 °C, aiming to reproduce typical Brazilian cropfield temperature conditions.
Palavras-Chave: | Natural zeolite.
Thesaurus Nal: | Ammonia; Ammonium sulfate; Fertilizers; Ion exchange; Photoacoustic spectroscopy.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Solos (CNPS)
Exemplares: | CNPS - (15857-1) - UPC - AP - DD -  -  - 2011.00073 - DIS