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| GARCÊZ,Ricardo Washington Dutra; LOPES,José Marques; FILGUEIRAS,Rogério Andrade; SILVA,Ademir Xavier da. |
| Abstract This work presents an investigation of the activity concentration (AC) of naturally occurring radionuclides in 26 samples of seasoning and nuts utilized for Brazilian population. The samples were measured using gamma spectroscopy technique with a high-purity germanium detector. The analysis shows that K-40 AC was measured in all samples, and its AC ranges from 21.0 Bq/kg to 1288 Bq/kg. The highest K-40 AC was measured for cheiro verde, a Brazilian seasoning made of chives (Allium schoenoprasum) and parsley ( Petroselinum crispum), while annatto, made with the fruit of Bixa orelhana , presented the lowest AC. Brazil nut (Bertholletia excelsa ) presented the highest AC for Ra-226 and Ra-228 with 24 Bq/kg and 25.7 Bq/kg, respectively, and black... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Naturally occurring radioactive; Seasoning; Nuts; Gamma spectrometry; Effective dose. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000100120 |
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| Dias,Nivea Maria Piccolomini; Caires,Eduardo Fávero; Pires,Luiz Fernando; Bacchi,Márcio Arruda; Fernandes,Elisabete Aparecida de Nadai. |
| The objective of this work was to determine the impact of phosphogypsum application on 226Ra and 228Ra activities in the soil and on their accumulation in soybean grains. A field experiment was carried out in Paraná state, Brazil, on a loamy Typic Hapludox, under no-till system, with increasing phosphogypsum rates: 4, 8, and 12 Mg ha-1. GammA ray spectrometry was carried out using HPGe detectors with 45 and 10% relative efficiencies, for soybean grains and soil, respectively. No increment of 226Ra and 228Ra activities was observed due to the increase in phosphogypsum rates in the soil, and a small reduction was noticed in the grains. Average values found for 226Ra and 228Ra activities were 37 and 57 Bq kg-1 in the soil and 1.44 and 3.19 Bq kg-1 in soybean... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Gamma spectrometry; Radioactivity; 226Ra; 228Ra. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010001200017 |
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