Evaluation of the Natural Radioactivity of Samples of Some Types of Field Crops in Different Areas of Tikrit, Iraq

This study aims to assess the concentrations of natural radionuclides activity (226Ra,232Th and 40 K) and calculate a number of radiation risk indicators in some types of field crops in different areas of Tikrit City-Salah Al-Din Governorate-Iraq. The measurement was carried out using a gamma-ray spectroscopy connected with a scintillation detector crystallized with thallium-activated sodium iodide NaI(TI). The results were that the mean concentrations of elements (226Ra, 232Th and 40 K) were (6.79±0.331Bq/kg,10.79±0.640Bq/kg,133.34±5.895Bq/kg\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\pm 0.331\, Bq/kg,10.79 \pm 0.640\, Bq/kg, 133.34 \pm 5.895\, Bq/kg$$\end{document}), respectively. And, the radiation risk indicators were less than the international permissible and the recommended average, so that the samples under study are safe and suitable for human and animal consumption.