Radiological impact of phosphogypsum surface application in a no-till system in Southern Brazil
作者： Nivea Maria Piccolomini Dias , Eduardo Fávero Caires , Luiz Fernando Pires , Márcio Arruda Bacchi , Elisabete Aparecida de Nadai Fernandes
DOI: 10.1590/S0100-204X2010001200017
关键词:
摘要: The objective of this work was to determine the impact phosphogypsum application on 226Ra and 228Ra activities in soil their accumulation soybean grains. A field experiment carried out Parana state, Brazil, a loamy Typic Hapludox, under no-till system, with increasing rates: 4, 8, 12 Mg ha-1. GammA ray spectrometry using HPGe detectors 45 10% relative efficiencies, for grains soil, respectively. No increment observed due increase rates small reduction noticed Average values found were 37 57 Bq kg-1 1.44 3.19 production is safe practice regarding risks radiation damage human health
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