Validation of in situ and laboratory gamma spectrometry measurements for determination of ²²⁶Ra, ⁴⁰K and ¹³⁷Cs in soil.

Department of Protection and Safety, Atomic Energy Commission of Syria, Damascus, PO Box 6091, Syria. prscientific3@aec.org.sy

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine 2013 May

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In situ and laboratory gamma spectrometry methods for determination of (226)Ra, (40)K and (137)Cs in soil have been validated and compared. Minimum detectable activity, repeatability, and reproducibility were the main validation parameters. Results have shown that soil humidity lower the in situ measurement results in comparison to laboratory measurements. Measurement uncertainties were also estimated and compared for both techniques. Uncertainty due to soil humidity (55%) using the in situ measurement was the main contributor to the total uncertainty, while the uncertainty due to net counting (71%) using the laboratory measurements was the largest contributor to the total uncertainty value. Copyright © 2013 Elsevier Ltd. All rights reserved.

Citation

M S Al-Masri, A W Doubal. Validation of in situ and laboratory gamma spectrometry measurements for determination of ²²⁶Ra, ⁴⁰K and ¹³⁷Cs in soil. Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine. 2013 May;75:50-7