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TRƯỜNG ĐẠI HỌC KHOA HỌC TỰ NHIÊN, ĐẠI HỌC QUỐC GIA THÀNH PHỐ HỒ CHÍ MINH

KHOA VẬT LÝ - VẬT LÝ KỸ THUẬT

BỘ MÔN VẬT LÝ HẠT NHÂN - NGÀNH KỸ THUẬT HẠT NHÂN - NGÀNH VẬT LÝ Y KHOA

Activity Concentrations of Natural Radionuclides in Soil and Water Around Some Quarries and Potential Human Health Effects

Le Binh An, Van Thang Nguyen, Nguyen Phong Thu Huynh, Huynh Thi Yen Hong, Truong Huu Ngan Thy, Huynh Truc Phuong, Cong Hao Le

Water Air Soil Pollut (2023) 234:122

Abstract:

In this study, radioactivity levels were measured in surface soil and water around some large quarries and quarry lakes in Binh Duong Province, Vietnam. Natural radionuclides (226Ra, 232Th, and 40K) in the collected soil and water samples were analyzed by gamma spectroscopy equipped with a high-purity germanium (HPGe) detector. A method was introduced to assess the radiological risks to the local population. It was based on the effective dose that was estimated by a sum of the individual doses. Some major exposure pathways including (1) external exposure by gamma rays, (2) internal exposure by drinking water, and (3) internal exposure by ingestion of food crops and fishes in the area were considered. For the estimation of natural radioactivity in other relevant environments such as food crops and fish, some estimation models based on soil-to-crops transfer factors and water-to-fish concentrations ratios were used. It was found that most of the radioactivity levels in soil and water were within the ranges of the concentrations in the world and Vietnam. The effective dose due to the ingestion of food exceeds the recommended limitation of 300 μSv y−1. However, the ingestion dose was estimated with the assumption that the ingestion rate is the average rate of people in the study area.

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