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目的本文调查了青海省海东地区、海南州、海西州、海北州农牧地区水源水中总α总β的放射性水平。方法综合考虑当地水系分布、地质条件、人群饮水密集区等因素,各州所属县设置5个以上采水点,共采集各种水源水样品100份按照国家标准方法测定。结果青海省海东地区、海南州、海西州、海北州水源水中丰水期总α放射性活度浓度均值分别为0.14Bq/L、0.15 Bq/L、0.25 Bq/L、0.13 Bq/L,总β放射性活度浓度均值分别为0.10 Bq/L、0.12 Bq/L、0.24 Bq/L、0.11 Bq/L,枯水期总α放射性活度浓度均值分别为0.15Bq/L、0.17 Bq/L、0.26 Bq/L、0.13 Bq/L总β放射性活度浓度均值分别为0.10 Bq/L、0.12 Bq/L、0.26 Bq/L、0.13 Bq/L。结论调查结果显示青海省海东地区、海南州、海西州、海北州水源水中的放射性水平处于正常本底范围,均未超出《生活饮用水卫生标准》(GB5749-2006)规定的总α、总β放射性指导值,各地区水样丰水期和枯水期总α、总β放射性活度浓度(Bq/L)差异无统计学意义(P>0.05)。
The purpose of this study was to investigate the radioactivity levels of total α-total β in water and water of farming and animal husbandry areas in Haidong, Hainan, Haixi and Haibei prefectures of Qinghai Province. Methods Considering the distribution of local water system, geological conditions and drinking water intensive areas of people, more than 5 water harvesting points were set up in the counties in each state. A total of 100 water source samples were collected and measured according to the national standard method. Results The results showed that the average concentrations of total alpha radioactivity in the water sources of Haidong, Hainan, Haixi and Haibei were 0.14 Bq / L, 0.15 Bq / L, 0.13 Bq / L, The average concentrations of total β radioactivity were 0.10 Bq / L, 0.12 Bq / L, 0.24 Bq / L and 0.11 Bq / L, respectively. The average concentrations of total radioactivity in dry season were 0.15 Bq / L, 0.17 Bq / Bq / L and 0.13 Bq / L, the mean concentrations of total β radioactivity were 0.10 Bq / L, 0.12 Bq / L, 0.26 Bq / L and 0.13 Bq / L, respectively. Conclusions The survey results show that the radioactivity levels of water sources in Haidong, Hainan, Haixi and Haibei prefectures in Qinghai Province are within the normal background range, and all of them do not exceed the total α specified in the “Sanitary Standard for Drinking-water” (GB5749-2006) There was no significant difference in total β radioactivity value, total α, total β radioactivity concentration (Bq / L) in watery and dry season in all regions.