粉煤灰对太原市地下水造成的放射性污染

The Radioactive Contamination of Powdered Coal Ash to the Underground Water in Taiyuan Area

针对太原市局部地区地下水中总α放射性超标问题进行了详细的调查，布置了长期监测网点，做了定期采样分析，理清了区内地下水中总α放射性超标或偏高的具体区域，确定了煤、煤系废弃物，特别是粉煤灰是造成水体总α放射性超标或偏高的重要原因，是水体放射性污染的主要污染源。

For solving the problem of total a radioactivity exceeding the standard of drinking water in local underground water of Taiyuan, the authors have carried out a detailed investigation and regular sampling analysis in the whole Taiyuan area, the results show that the water and the nuclides in solid materials have obvious corresponding relationship, and so it is determined that the waste materials of coal and coal-bearing series, particularly, the powdered coal ash, are the important sources lead to exceeding standard of the total a radioactivity of water. Finally, some advanced prevention measures are suggested.