Detection of Heat Resulting from Determining the Concentrations of some Radionuclides for Different Samples of Natural Water in Nineveh Governorate, Iraq

Danya al sofy, F. Al-jomaily, A. El-Taher
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Abstract

The current study included the determination of the Heat Production Rate (HPR) resulting from the decay of radioactive elements ( 238 U, 232 Th, and 40 k) after determining their concentrations using the technique of collecting gamma ray’s spectrum by means of the sodium iodide detector NaI (TI). The importance of determining the heat production rate, because it has a profound effect on the surface of the earth’s crust, especially in the conditions of desertification that have swept the globe in the last two decades. To achieve the objective of the study, 30 samples of natural water were collected. These samples varied between rainwater, dams, groundwater and pure tap water to natural spring water. The results showed that the concentrations of uranium ( 238 U) ranged between 0.161-0.006 ppm and thorium ( 232 Th) concentrations between (0.462-0.110 ppm), in addition to the potassium ( 40 k) concentration between (0.23-0.023%). These values showed radioactivity levels below the safe and standard limits set by the UNSCEAR Committee. While the results showed for the heat production rate values ranged between (0.0223-0.0091), which indicates a low heat production rate that does not affect the temperature of the earth's crust within the limits of the sample sites that this study included. The results of the current study can be used to provide basic data for future epidemiological investigations and monitoring programs. In the areas under study
对伊拉克尼尼微省不同天然水样品中某些放射性核素浓度测定所产生的热的探测
目前的研究包括利用碘化钠探测器NaI (TI)收集伽马射线能谱的技术确定放射性元素(238 U, 232 Th和40 k)的浓度后,确定其衰变产生的产热率(HPR)。确定产热率的重要性,因为它对地壳表面有深远的影响,特别是在过去二十年席卷全球的沙漠化情况下。为了达到研究目的,采集了30个天然水体样本。这些样本从雨水、水坝、地下水、纯自来水到天然泉水不等。结果表明,铀(238 U)浓度在0.161 ~ 0.006 ppm之间,钍(232 Th)浓度在0.462 ~ 0.110 ppm之间,钾(40 k)浓度在0.23 ~ 0.023%之间。这些数值表明放射性水平低于辐射科委会规定的安全和标准限度。而结果显示,产热率值在(0.0223-0.0091)之间,这表明在本研究所包括的样品点范围内,低产热率不影响地壳温度。本研究结果可为今后的流行病学调查和监测提供基础数据。在研究的领域
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