Título:	Influence of Graphene Quantum Dots (GQDs) on the sorption of 137Cs and 60Co in soils from the Brazilian Semiarid region.
Autor:	PEREIRA, T. R. WASSERMAN, M. A. V. SILVA, M. M. da BARRETO, M. B. SOUSA, W. de O. PINHEIRO, E. F. M. PEREZ, D. V. ANTONINO, A. C. D. CORREA, M. M.
Afiliación:	TATIANE ROCHA PEREIRA, INSTITUTO DE RADIOPROTEÇÃO E DOSIMETRIA; MARIA ANGÉLICA VERGARA WASSERMAN, INSTITUTO DE RADIOPROTEÇÃO E DOSIMETRIA; MICHELE MARIA DA SILVA, INSTITUTO DE RADIOPROTEÇÃO E DOSIMETRIA; MANUELLA BORGES BARRETO, INSTITUTO DE RADIOPROTEÇÃO E DOSIMETRIA; WANDERSON DE OLIVEIRA SOUSA, INSTITUTO DE RADIOPROTEÇÃO E DOSIMETRIA; ÉRIKA FLÁVIA MACHADO PINHEIRO, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; DANIEL VIDAL PEREZ, CNPS; ANTONIO CELSO DANTAS ANTONINO, UNIVERSIDADE FEDERAL DE PERNAMBUCO; MARCELO METRI CORREA, UNIVERSIDADE FEDERAL DO AGRESTE DE PERNAMBUCO.
Año:	2025
Referencia:	Brazilian Journal of Radiation Sciences, v. 13, n. 2, e2803, 2025.
Descripción:	Graphene Quantum Dots (GQDs) represent a new class of nanomaterials that, due to their optical, electronic, and chemical properties, have gained attention for various applications in industry, health, and the environment. However, the understanding of their dynamics and behavior in different environmental compartments is still in its early stages, requiring further research, although recent studies have already highlighted their potential for the remediation of polluted environments. While knowledge about the behavior of radionuclides in soils has advanced, research on semi-arid soils remains limited, both nationally and internationally. To address some of these gaps, this study determined the distribution coefficient (Kd) values for 137Cs and 60Co in some soils from the Brazilian semiarid region (Latossolo and Argissolo, respectively Ferralsol and Acrisol in the FAO classification), considering variations in pH and the presence or absence of GQDs. The obtained Kd values for 137Cs and 60Co showed different responses of the soils to the radionuclides, pH variations, and/or the presence of GQDs. The geometric mean of 137Cs Kd values to the studied soils were 510 mL g-1 in the Acrisol and 1730 mL g-1 in the Ferralsol, differing from the generic values found in the literature, which are often used as standard in radioecological models due to the lack of regional data. The geometric mean for 60Co Kd values were 791 mL g-1 in the Acrisol and 395 mL g-1 in the Ferralsol, also diverging from the generic literature values. These results highlight the responses of certain Brazilian soils to the introduction of exogenous materials and the need to obtain specific Kd values for semi-arid soils, aiming to improve environmental protection strategies.
Thesagro:	Argissolos Latossolo
NAL Thesaurus:	Nanoparticles Acrisols Ferralsols Radionuclides
Palabras clave:	Nanopartícula Radionuclídeos
DOI:	http://dx.doi.org/10.15392/2319-0612.2025.2803
Tipo de Material:	Artigo de periódico
Acceso:	openAccess
Aparece en las colecciones:	Artigo em periódico indexado (CNPS)