Gamma-ray spectrometry sensor and geochemical prospecting in an area of sugar cane plantation

Brazilian Archives of Biology and Technology

Valter Antonio Becegato²  Francisco José Fonseca Ferreira¹  João Batista Pereira Cabral¹  Sílvio Luis Rafaelli Neto² 

[1],Universidade do Estado de Santa Catarina CAV Departamento de Engenharia RuralLages SC ,Brasil

关键词: Fertilizers;    soils;    radionuclides;    gamma-ray spectrometry;   

DOI  :  10.1590/S1516-89132008000100001

来源: SciELO

【 摘 要 】

In this study the K, U and Th radionuclide concentrations were determined in a sugar cane plantation that received large quantities of fertilizer and gypsum. Geochemical data were obtained for the clay, iron and organic matter in the soil samples, taken from depths of 0-20 and 20-40 cm. The average radionuclide concentrations were 71 Bq Kg-1 for K; 5.97 Bq Kg-1 for U, and 11.26 Bq Kg-1 for Th, and the uranium was variable (56%). The radionuclide average concentrations for the different fertilizer compositions varied in the range of 603.5 - 8855.0 Bq Kg-1 for K; 27.3 - 684.4 Bq Kg-1 for U, and 58 - 788.5 Bq Kg-1 for Th, and it was most variable for K (53%). Gypsum average concentrations were 82.6 Bq Kg-1 for K, 641.5 Bq Kg-1 for U, and 201.7 Bq Kg-1 for Th, and it was most variable for K (46%). Average organic matter, clay and iron concentrations for both the depths were 0.71 and 0.68 %; 16.2 and 16.9 %, and 29.0 and 26.8 mg/l respectively.

【 授权许可】

CC BY-NC   
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