210Pb numa região anômala de Pocinhos-Paraíba
DOI:
https://doi.org/10.15392/bjrs.v6i2.482Palabras clave:
Forrage, natural radioactivity, radiolead.Resumen
From 1979 to 1982, the extinct company NUCLEBRAS carried out studies on the occurrence of uranium in Pocinhos, a city located in the harsh region of the State of Paraíba, where dairy farms currently exist. 210Pb, descending from the 238U radioactive series, is deposited in soil and plants, mainly due to the natural fallout of 222Rn. Once present in the plants, the 210Pb can be ingested by dairy cows, and then transferred to the milk. Thus, milk consumption may constitute an important route of 210Pb intake by man. In the human body, 210Pb is rapidly transferred to the bones, which can induce the onset of leukemia. In this context, the objective of the present work was to determine the concentrations of 210Pb in soil samples and forage palm (Opuntia spp.) From farms located in the uranium anomaly of the city of Pocinhos. For that, the ion exchange resin technique was used. The concentrations of 210Pb in the soil samples ranged from 7 to 5,098 Bq.kg-1. For the forage palm samples, the concentrations varied from 4 to 178 Bq.kg-1 in the dry matter. The results showed a high availability of 210Pb for the cattle feed chain of the farms studied.
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FILHO, J.S.; ANDRADE, V.A. Comentários sobre a avaliação Fotogeológica da Área do Projeto Venturosa. NUCLEBRÁS/EFOR.PM. 1988.
SOUZA, E.M. et al. Ocorrência de urânio em Pocinhos, Paraíba-anomalia de Sítio Bravo: Petro-grafia e radiometria. Estudos Geologicos, v. 22(2), p. 93-103, 2012.
JAWOROWSKI, Z. Radioactive lead in the environment and in the human body. At Energy Rev, v. 7, p. 3-27, 1969.
BERESFORD, N.A, HOWARD, B.J. The importance of soil adhered to vegetation as a source of radionuclides ingested by grazing animals. Sci Total Environ, v. 107, p. 237-242, 1999.
D’SOUZA, T.J., MISTRY, K.B. Comparative uptake of thorium-230, radium-226, lead-210 and polonium by plants. Radiat Bot, v. 10, p. 293-295, 1970.
ATHALYE, V.V., MISTRY, K.B. Foliar retention, transport and leaching of polonium-210 and lead-210. Radiat Bot, v. 12, p. 287-290, 1972.
AMARAL, E.C.S et al. Transfer of 226Ra and 210Pb to forage and milk in Brazilian high natural radioactivity region. Radiat Prot Dosim, v. 24, p. 119-121, 1988.
HILL, C.R. Lead-210 and polonium-210 in grass. Nature, v. 187, p. 211-212, 1960.
POTTER, G.D., MCINTYRE, D.R., VATTUONE, G.M. The fate and implications of 203Pb in-gestion in a dairy cow and a calf. Health Phys, v. 20, p. 650-653, 1971.
STANLEY, R.E., MULLEN, A.A., BRETTHAUER, E.W. Transfer to milk of ingested radi-olead. Health Phys, v. 21, p. 211-215, 1971.
SALMON, P.L., BONDARENKO, O.A., HENSHAW, D. L. DOSE210, a semi-empirical model for prediction of organ distribution and radiation doses from long term exposure to 210Pb and 210Po. Radiat Prot Dosim, v. 82(3), p. 175-192, 1999.
POUNDS, J.G., MITTELSTAEDT, R.A. Mobilization of cellular calcium-45 and lead-210: ef-fect of physiological stimuli. Science, v. 220(4594), p. 308-310, 1983.
Instituto de Radioproteção e Dosimetria (IRD). Manual de procedimentos técnicos do Departa-mento de Proteção Radiológica Ambiental. IRD/CNEN, Rio de Janeiro, Brasil, 1983.
GODOY, J.M., MOREIRA, I., WANDERLEY, C., SIMÕES FILHO, F.F, MOZETO, A.A. An alternative method for the determination of excess 210Pb in sediments. Radiat Prot Dosim, v. 75, p. 111-115, 1998.
JIA, G., TORRI, G. Determination of 210Pb and 210Po in soil or rock samples containing refrac-tory matrices. Appl Radiat Isto, v. 65, p. 1-8, 2007.
WALLING, D.E., HE, Q. Using fallout lead-210 measurements to estimate soil erosion on cul-tivated land. Soil Sci Soc Am J, v. 63(5), p. 1404-1412, 1999.
SILVA, C.M. et al. Pb-210 in rock and soils of the Semi-Arid Agreste Region of Pernambuco, Brazil. Bull Environ Contam Toxicol, v. 82(6), p. 647-649, 2009.
PEREIRA, W.S., JÚNIOR D.A.P. Monitoração ambiental da unidade de concentrado de urânio (URA) em Caetité, BA, Brasil. Rev Bras Pesq Des, v. 4(3), p. 673-677, parte 1, 2002.
FRIES, G.F., MARROW, G.S., SNOW, P.A. Soil ingestion by dairy cattle. J Dairy Science, v. 65, p. 611-618, 1982.
BERESFORD, N.A., HOWARD, B.J. The importance of soil adhered to vegetation as a source of radionuclides ingested by grazing animals. Sci Total Environ, v. 107, p. 237-254, 1999.
TOKARNIA, C.H., DÖBEREINER, J., PEIXOTO, P. V. Deficiências minerais em animais de fazenda, principalmente bovinos em regime de campo. Pesq Vet Bras, v. 20(3), p.127-138, 2000.
LANDINSKAYA, L.A et al. 210Pb and 210Po content in air, water, foodstuffs and the human body. Arch Environ Health, v. 27, p. 254-258, 1973.
MCDOWELL-BOYER, L.M.; WATSON, A.P.; TRAVIS, C.C. A review of parameters de-scribing terrestrial food-chain transport of 210Pb and 226Ra. Nuclear Safety, p. 486-495, 1980.
RAYNO, D.R. Estimated dose to man from uranium millling via the beef/milk food-chain pathway. Sci Total Environ, v. 31(3), p. 219-241, 1983.
SANTOS, D.C. Estimativa de parâmetros genéticos em caracteres de clones da palma for-rageira. Opuntia ficus-indica Mill e Nopalea cochenillifera Salm–Dyck. Recife: Universidade Federal Rural de Pernambuco, 1992. 119p. Dissertação de Mestrado.
SCHULTZ, R.K. Soil chemistry of radionuclides. Health Phys, v. 11, p. 1317-1324, 1965.
SILVA, C.M. 210Pb in forage consumed by dairy cows. Bull Environ Contam Toxicol, v. 83, p. 943-946, 2009.
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