Concentrations of Radon in the Water of Balakot-Bagh Fault Line Region, Lesser Himalayas, North Pakistan

IF 0.7 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY

Doklady Earth Sciences Pub Date : 2024-05-02 DOI:10.1134/s1028334x24601019

Fayaz Khan, Salman Ahmed Khattak, Waseem Khan, Zaheen Ullah, Fayaz Ali, Quan Wan

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Abstract

Radon in drinking water poses radiation-related health risks. Investigating water-related health problems is indispensable, so the goal of the study was to determine how much radon was present in drinking water sources close to and far from the Balakot-Bagh (B-B) fault line (the site of a 7.6-magnitude earthquake in 2005) using the alpha-spectroscopy-based active method RAD-7. The sampling timeframe for the study was from May 16 to August 15, 2020. The radon level of the well water was higher, with an average value of 20.6 BqL^–1. These values were 19.5 and 9.3 BqL^–1 in spring and surface waters, respectively, although they were 7.7 and 5.5 BqL^–1 far away from the fault line, respectively, while in well water its content (activity) was 14.9 BqL^–1. The mean values for all water sources far and close from the fault line were 9.3 and 16.5 BqL^–1, respectively. The value close to the fault line exceeds the maximum contamination limit recommended in the United States of 11.1 BqL^–1, although the values far from the fault line were within limits. The doses determined from the radon levels of spring, well, and surface waters were 0.053, 0.056, and 0.025 mSv per year, respectively, and the mean dose of overall water-borne radon was 0.045 mSv. Based on regional comparisons, the mean radon concentrations in the drinking water sources for this study were higher than in Romania, Turkey, Italy, Poland, and India.

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巴基斯坦北部小喜马拉雅山巴拉科特-巴格断层线地区水中的氡浓度

摘要饮用水中的氡会带来与辐射有关的健康风险。调查与水有关的健康问题是必不可少的，因此本研究的目标是利用基于阿尔法光谱的主动方法 RAD-7，确定靠近和远离巴拉科特-巴格（B-B）断层线（2005 年发生 7.6 级地震的地点）的饮用水源中氡的含量。研究的采样时间为 2020 年 5 月 16 日至 8 月 15 日。井水的氡含量较高，平均值为 20.6 BqL-1。在远离断层线的泉水和地表水中，氡含量（活度）分别为 19.5 和 9.3 BqL-1，而在井水中，氡含量（活度）为 14.9 BqL-1。距离断层线较远和较近的所有水源的平均值分别为 9.3 和 16.5 BqL-1。靠近断层线的数值超过了美国建议的最大污染限值 11.1 BqL-1，而远离断层线的数值则在限值之内。根据泉水、井水和地表水的氡含量确定的剂量分别为每年 0.053、0.056 和 0.025 mSv，水载氡的总体平均剂量为 0.045 mSv。根据地区比较，本研究中饮用水源的平均氡浓度高于罗马尼亚、土耳其、意大利、波兰和印度。

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来源期刊

Doklady Earth Sciences 地学-地球科学综合

CiteScore

1.40

自引率

22.20%

发文量

138

审稿时长

3-6 weeks

期刊介绍： Doklady Earth Sciences is a journal that publishes new research in Earth science of great significance. Initially the journal was a forum of the Russian Academy of Science and published only best contributions from Russia. Now the journal welcomes submissions from any country in the English or Russian language. Every manuscript must be recommended by Russian or foreign members of the Russian Academy of Sciences.