Radioactive trace measurements of some exported foods from the South of Brazil
- 作者：Viviane Scheibel ; Carlos Roberto Appoloni
- 关键词：Soy ; Glycine max ; Gamma-ray spectrometry ; Natural radioactivity ; Food safety
- 刊名：Journal of Food Composition and Analysis
- 出版年：2007
- 期刊代码：119_08891575
- 类别：abs
- 出版时间：November 2007
- 卷：20
- 期：7
- 页码：650-653
- 文件大小：120 K
摘要
Investigation of radioactive traces in foods produced and exported mainly in Paraná State, Brazil, was carried out by gamma-ray spectrometry, a non-destructive nuclear method. The redistribution of 40K concentration during the processing of soy (Glycine max) primary products (745±9 Bq kg−1 for soybean, 1473±15 Bq kg−1 for soy bran, and 
8.8 Bq kg−1 for commercial refined soy oil) was verified. The 40K activity for all oil stages analyzed was lower than the limits of detection. Others foods such as sulfite-treated sugar, mate tea, and mint were analyzed. The activities for the natural nuclear chain (228Th and 226Ra) and the 137Cs (artificial radionuclide) were presented.
8.8 Bq kg−1 for commercial refined soy oil) was verified. The 40K activity for all oil stages analyzed was lower than the limits of detection. Others foods such as sulfite-treated sugar, mate tea, and mint were analyzed. The activities for the natural nuclear chain (228Th and 226Ra) and the 137Cs (artificial radionuclide) were presented.