Purpose

The purpose of this paper is to buildup baseline data for ²²⁶Ra, ²³²Th and ⁴⁰K levels in different food samples and computes their cancer risk (CR).

Design/methodology/approach

This report has been performed to buildup baseline data for ²²⁶Ra, ²³²Th and ⁴⁰K levels in different food samples and computes their CR. ²²⁶Ra, ²³²Th and ⁴⁰K activity levels were measured using ?-ray spectrometry based on high-purity germanium (HPGe).

Findings

The findings exhibited that the annual effective dose (AED) and CR due to ²²⁶Ra ingestion in foodstuff samples have shown the trends cereal > vegetable > meat > fruits > sesame. Meanwhile, (AED) and (CR) due to ⁴⁰K displayed the trends vegetable > cereal > meat > fruits > sesame. Although the average value of radiological dose due to ingestion of some radionuclides slightly exceed the values of some foodstuff around the world. However, the overall average of (AED) for all foodstuff samples (226.6 µSv/y) was found to be far below the world average (AED) (300 µSv/y).

Practical implications

The main contributor to the AED was ⁴⁰K 85, ²²⁶Ra 9 and ²³²Th 6%. The computed magnitude values for CR owing to ²²⁶Ra, ²³²Th, ⁴⁰K (1.3 × 10⁻⁵) lower than International Commission on Radiological Protection (ICRP) CR of (2.5 × 10⁻³) for the general public.

Originality/value

The main contributor to the AED was ⁴⁰K 85 %, ²²⁶Ra 9% and ²³²Th 6%. The computed magnitude values for CR owing to ²²⁶Ra, ²³²Th, ⁴⁰K (1.3 × 10⁻⁵) lower than ICRP CR of (2.5 × 10⁻³) for the general public.

中文翻译：

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苏丹对某些食品中226Ra，232Th和40K活性水平及其患癌风险的初步调查

目的

本文的目的是建立不同食物样品中²²⁶ Ra，²³² Th和⁴⁰ K水平的基线数据，并计算其癌症风险（CR）。

设计/方法/方法

执行此报告是为了建立不同食品样品中²²⁶ Ra，²³² Th和⁴⁰ K水平的基线数据，并计算其CR。使用基于高纯度锗（HPGe）的γ射线光谱法测量了²²⁶ Ra，²³² Th和⁴⁰ K的活性水平。

发现

研究结果表明，食品样品中²²⁶ Ra摄入导致的年度有效剂量（AED）和CR显示出谷物>蔬菜>肉类>水果>芝麻的趋势。同时，由于⁴⁰ K ，（AED）和（CR）表现出蔬菜>谷物>肉类>水果>芝麻的趋势。尽管由于摄入某些放射性核素而引起的放射剂量的平均值略高于世界上某些食品的值。然而，（AED）的所有食品样品的总平均（226.6 μ SV / Ý）被发现是远低于世界平均水平（AED）（300 μ SV / ÿ）。

实际影响

AED的主要贡献者是⁴⁰ K ^85、226 Ra 9和²³² Th 6％。由于²²⁶ Ra，²³² Th，⁴⁰ K（1.3×10 ^-5）而导致的CR的计算值要比国际放射防护委员会（ICRP）的CR（2.5×10 ^-3）低。

创意/价值

AED的主要贡献者是⁴⁰ K 85％，²²⁶ Ra 9％和²³² Th 6％。由于比普通公众的ICRP CR（2.5×10 ^-3）低²²⁶ Ra，²³² Th，⁴⁰ K（1.3×10 ^-5），因此CR的计算强度值。