Study on stratified sampling and detection of radioactive contaminated soil

This paper introduces the sampling and detection method of layered soil in radioactive contaminated sites. The β counting rates of layered soil with different depths are more than one order of magnitude between the lowest value and the highest value of 6.34 ∼ 86.9 min^-1 and the lowest value is at the background level of normal environment. which fully indicates that the established stratified soil sampling method can effectively avoid the problem of cross contamination of samples, and is helpful to improve the representativeness of samples and the accuracy of analytical results. It can be used in layered soil sampling of radioactive contaminated sites. (authors)