Study on the activity concentration of total α and natural radionuclides in drinking water in Inner Mongolia region
10.3760/cma.j.issn.0254-5098.2021.07.005
- VernacularTitle:内蒙古地区饮用水中总α及天然放射性核素的活度浓度调查研究
- Author:
Yulong BAO
1
;
Shuai ZHANG
;
Zhichao SUN
;
Xiao XU
;
Xiang LIU
;
Chengguo WANG
Author Information
1. 内蒙古自治区综合疾病预防控制中心 内蒙古自治区医疗卫生放射卫生学重点实验室，呼和浩特 010031
- Keywords:
Inner Mongolia;
Drinking water;
Radioactivity;
Effective dose
- From:
Chinese Journal of Radiological Medicine and Protection
2021;41(7):504-508
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To ascertain the level of radioactivity in drinking water in Inner Mongolia region, and analyze the reasons why the total alpha radioactivity index is high in drinking water in some areas thereof.Methods:Water samples with high total alpha radioactivity index were collected in some towns in the region on the basis of surveyed result , with the causes of abnormal radioactivity index being analyzed, using low background α radioactivity measuring instrument, microuranium analyzer, and inductively coupled plasma mass spectrometer, to estimate the accumulative effective dose caused by ingestion of radioactivity in drinking water.Results:The total alpha activity was 0.508-1.008 Bq/L in tap water samples and 0.507-1.965 Bq/L in finished water samples. Uranium concentration was 3.41-35.71 μg/L in tap water measured using laser fluorescence method and 3.62-32.61 μg/L in finished water measured using laser fluorescence method, respectively. The concentration of 238U and 232Th in tap water measured by inductively coupled plasma mass spectrometry was 5.83-34.36 μg/L, 0.002-0.359 μg/L, respectively, while that in finished water was 5.62-29.41 μg/L, 0.003-0.327 μg/L, respectively. Conclusions:Based on the repeated measurement analysis of drinking water samples from some areas in Inner Mongolia, the high level of total α radioactivity in water samples is caused by uranium, and the high content of uranium leads to a high total alpha value.
