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Naturally Pb-contaminated soils in uranium and thorium anomaly |
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| Authors: | Cleomacio Miguel da Silva Crescêncio Andrade da Silva Filho João Adauto Souza Neto Carlos Eduardo de Oliveira Costa Júnior Fernando Carlos Araújo Ribeiro |
| Affiliation: | 1. Departamento de Biologia, Universidade de Pernambuco, Nazaré da Mata, Brasil;2. Mestrado em Gest?o do Desenvolvimento Local Sustentável (GDLS)-FCAP-UPE, Recife, Brazil;3. Centro Regional de Ciências Nucleares do Nordeste, Cidade Universitária, Recife, Brazil;4. Departamento de Geologia, Centro de Tecnologia e Geociências, Universidade Federal de Pernambuco, Recife, Brazil;5. Faculdade Integrada de Pernambuco-FIP, Recife, Brazil;6. Instituto Federal de Pernambuco-IFPE – Campus Recife, Recife;7. Comiss?o Nacional de Energia Nuclear, Instituto de Radioprote??o e Dosimetria, Rio de Janeiro, Brazil |
| Abstract: | The paper reports an examination of the primary sources of stable lead (Pb) occurring in rocks and soils on dairy farms in the municipalities of Pedra and Venturosa in Pernambuco, Brazil. Lead in rock and soil was quantified by flame atomic absorption spectrophotometry. The Pb concentration in calcium silicate rock varied from 21 to 1124.00 mg.kg?1 and soil varied from 18 to 96 mg.kg?1. The lead concentration in granite rock varied from 6 to 440 mg.kg?1 and soil varied from 8 to 15 mg.kg?1. The results point to the rocks as the primary sources of lead. |
| Keywords: | Soils rocks lead ingestion toxicity risk |