Comparison of methods for determination of gross α and gross β radioactivity in soil
10.13491/j.issn.1004-714X.2023.03.005
- VernacularTitle:土壤中总α、总β放射性检测方法的比较
- Author:
Qiang XIONG
1
;
Xiao GE
2
;
Linlin YAN
2
;
Fei CHEN
1
;
Zhen ZHANG
1
Author Information
1. National Center for Occupational Safety and Health, National Health Commission of the People's Republic of China, Beijing 102308 China.
2. National Center for Occupational Safety and Health, National Health Commission of the People's Republic of China, Beijing 102308 China;School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001 China.
- Publication Type:OriginalArticles
- Keywords:
Soil;
Gross α and gross β;
Direct paving method;
Extraction-enrichment method
- From:
Chinese Journal of Radiological Health
2023;32(3):245-249
- CountryChina
- Language:Chinese
-
Abstract:
Objective To improve the determination of gross α and gross β radioactivity in soil, establish a fast and accurate method for soil radioactivity analysis, and provide a basis for establishing standard methods for analysis of gross α and gross β radioactivity in soil. Methods Using the method of soil nuclide extraction and the sample preparation method for low background α/β counter, an extraction-enrichment method was established to monitor the radioactivity of gross α and gross β in soil. Meanwhile, the radioactivity of gross α and gross β in the same soil samples was determined using the direct paving method. An optimal method of monitoring gross α and gross β radioactivity in soil was put forward by comparing the advantages and disadvantages of the two methods. Results With the direct paving method, the radioactivity of gross α and gross β in soil was 0.47 Bq/g and 0.85 Bq/g, respectively; and the minimum detection limit was 0.04 Bq/g and 0.02 Bq/g, respectively. With the extraction-enrichment method, the radioactivity of gross α and gross β in soil was 0.32 Bq/g and 0.29 Bq/g, and the minimum detection limit was 0.02 Bq/g and 0.01 Bq/g. Conclusion Comparison of the two detection methods showed that the direct paving method is more accurate and easier to operate, while the extraction-enrichment method is complex in operation and has relatively large system error but provides a lower minimum detection limit.
