REGINA BECK TICIANELLI

REGINA BECK TICIANELLI

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Multi-element contamination in soils from major mining areas in Northeastern of Brazil
2021 - MONTALVAN-OLIVARES, D.M.; SANTANA, C.S.; VELASCO, F.G.; LUZARDO, F.H.M.; ANDRADE, S.F.R.; TICIANELLI, R.B.; ARMELIN, M.J.A.; GENEZINI, F.A.
Mining has become one of the main factors in the global biogeochemical cycle of potentially toxic elements. Therefore, it is considered one of the anthropogenic activities with the greatest negative impact on the environment. These impacts are maximized in semiarid regions, where mining activities can lead to soil degradation and decrease in land productivity. This study aimed to assess the level of contamination in natural, urban, and agricultural soils of three important mining areas, where approximately 80,000 people live, and pollution levels have never been determined before. For this purpose, soil samples were collected around iron, uranium, and vanadium mines, as well as in the main human settlements of the region. The concentrations of 34 elements were determined by instrumental neutron analysis activation (INAA) and inductively coupled plasma optical emission spectrometry (ICP OES) techniques. Pollution indices (CF, EF, mCd, PLI, and REEP) revealed that there is a moderate to heavy level of pollution for 89% of the analyzed elements. Additionally, an extreme contamination level was observed in 78% of the samples, for at least one element. Statistical analyses were performed to identify patterns in the distribution and common sources of pollution. The results suggest that the concentrations for Al, Ba, Hf, Na, Pb, Rb, REE, Ta, Th, U, Zn, and Zr are associated with geogenic causes. However, the influence of anthropogenic sources such as agriculture and mining on the accumulation of these elements in soils should not be disregarded. In contrast, the contents of As, Br, Cd, Co, Cr, Cs, Cu, Fe, K, Mn, Ni, Sc, Ti, and V reflect the direct impact of anthropogenic sources.
Determination of REEs in agricultural soils of pernambuco by the neutron activation technique
2017 - FRANÇA, FERNANDA C.S.S.; TICIANELLI, REGINA B.; MOREIRA, EDSON G.; GENEZINI, FREDERICO A.; ALBUQUERQUE, ADRIANA M. de A.; SILVEIRA, PATRICIA B. da; BARBOSA, JONNAS T. de L.; ALMEIDA, AMANDA C. de; HONORATO, ELIANE V.; HAZIN, CLOVIS A.
The indiscriminate use of phosphate fertilizers causes adverse effects on biota, mainly due to the contaminants present in the rocks used in their manufacture. Among these contaminants, stand out the Rare Earth Elements (REEs) because of the significant increase in the use in several technological areas, such as in vehicle catalysts and also in fertilizer enrichment. In order to evaluate the levels of La, Sm, Nd, Yb and Lu by the Instrumental Neutron Activation Analysis (INAA), the present study aims to survey the ETRs in agricultural soils in Pernambuco/Brazil. For this study, 120 soil samples with a depth of 20 cm were collected in the main vegetable producing regions of the Metropolitan Region of Recife (RMR), evaluating organic and conventional crops with and without influenced by automotive vehicles. The results obtained when compared to the Netherlands reference values defined by the National Institute of Health and Environment (RIVM). The results were higher in all points for La (35 mg.kg-¹ at 85 mg.kg-¹) Yb, (4 mg.kg-¹ at 11 mg.kg-¹) and Lu (0.3 mg.kg-¹ at 0.7 mg.kg-¹ at 4 mg.kg-¹). For Nd (9 mg.kg-¹ at 137 mg.kg-¹) the concentrations were above the values reported by RIVM in 4 points. Comparing the types of crops evaluated with the literature, the results are found was above for all elements analyzed. It may be related to the increase in the use of phosphate fertilizers. However, in environments using smaller amounts of additives, the results were also significant and the more detailed studies are needed to evaluate other possible contamination pathways.
Metals and semi-metals in street soils of São Paulo city, Brazil
2011 - RIBEIRO, ANDREZA P.; FIGUEIREDO, ANA M.G.; TICIANELLI, REGINA B.; NAMMOURA NETO, GEORGES M.; SILVA, NATALIA C.
Metals in soils adjacent to avenues of highly dense traffic in São Paulo city, Brazil
2012 - RIBEIRO, A.P.; FIGUEIREDO, A.M.G.; FIGUEIRA, R.C.L.; TICIANELLI, R.B.
U Th and lanthanides in streetsoils of São Paulo city, Brazil
2013 - TICIANELLI, R.B.; RIBEIRO, A.P.; FIGUEIREDO, A.M.G.; ZAHN, G.S.
Metals in soils adjacent to avenues of highly dense traffic of Sao Paulo city, Brasil
2009 - TICIANELLI, REGINA B.; RIBEIRO, ANDREZA P.; FIGUEIREDO, ANA M.G.; NAMMOURA NETO, GEORGES M.; SILVA, NATHALIA C.
Spatial distribution of trace elements in topsoils adjacent to main a venues of Sao Paulo city, Brasil
2009 - RIBEIRO, ANDREZA P.; FIGUEIREDO, ANA M.G.; NAMMOURA NETO, GEORGES M.; SILVA, NATALIA C.; TICIANELLI, REGINA B.; CAMARGO, SONIA P.; ENZWEILER, JACINTA
Determination of rare earth elements in Solanum lycocarpum in 'Cerrado de Emas', Pirassununga, Sao Paulo, by neutron activation analysis
1997 - MARIA, S.P.; FIGUEIREDO, A.M.G.; TICIANELLI, R.B.; CECCANTINI, G.
Metals and semi-metals in street soils of São Paulo city, Brazil
2012 - RIBEIRO, ANDREZA P.; FIGUEIREDO, ANA M.G.; TICIANELLI, REGINA B.; NAMMOURA NETO, GEORGES M.; SILVA, NATALIA C.; KAKAZU, MAURICIO H.; ZAHN, GUILHERME