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目的了解和分析甘肃省部分地(州、市)水样残渣量与总放射性水平之间的关系,为水质监测提供科学依据。方法选择部分地(州、市)地下水作为研究对象,根据国家《生活饮用水标准检验方法》(GB/T 5749-2006)对水样总放射性活度进行分析。结果 40份地下水样的残渣范围为(0.243~1.094)g/L,平均每份水样的残渣量为0.473 g/L,与之对应的水样总α放射性为0.022 Bq/L,总β放射性为0.109 Bq/L;总α、总β放射性浓度范围分别为(0.010~0.129)Bq/L和(0.025~0.179)Bq/L,平均值分别为0.035 Bq/L和0.073 Bq/L;水样残渣量与总α放射性活度和总β放射性活度之间均存在一定的相关性,且与总β放射性活度的线性关系相对较好(r=0.622,P≤0.01)。结论甘肃省部分地(州、市)水质总放射性水平的影响因素很多,相关部门在质量控制方面应严格把关。
Objective To understand and analyze the relationship between the amount of residual water samples and the total radioactivity in some (state and city) Gansu Provinces and provide a scientific basis for water quality monitoring. Methods Selected groundwater (state, city) as the research object, and analyzed the total radioactive activity of water samples according to the national standard test method for drinking water (GB / T 5749-2006). Results The results showed that the residues of 40 groundwater samples were (0.243-1.094) g / L, the average residual amount of each sample was 0.473 g / L, and the corresponding total water samples were 0.022 Bq / L. The total radioactivity (0.109 Bq / L). The total α and total β radioactive concentrations ranged from 0.010 to 0.129 Bq / L and from 0.025 to 0.179 Bq / L with the average values of 0.035 Bq / L and 0.073 Bq / L respectively. There was a certain correlation between the residual amount and the total radioactivity and the total radioactivity, and the linear relationship was relatively good (r = 0.622, P≤0.01). Conclusion There are many influencing factors on the total radioactive level of water quality in some (prefectures and cities) of Gansu Province. Relevant departments should strictly control their quality control.