WEI Ji-fang1,2, DENG Chun-mei1,2, ZHANG Xin-xing1,2, WANG Rong-yuan1,2, WANG Wei1,2, YANG Peng-jin1,2, ZHANG Meng-meng1,2
1. North China Sea Environmental Monitoring Center, State Oceanic Administration, Qingdao 266033, China;
2. Shandong Province Key Laboratory of Marine Ecological Environment and Disaster Prevention and Mitigation, Qingdao 266033, China
Abstract：The concentration of 40K in seawater was measured directly by HPGe γ spectrometer. Based on the LabSOCS software, the maximum detection efficiency corresponding to the optimal geometric shape and parameters was calculated, as a result, the analysis of the concentration of 40K in seawater can be finished in 3 hours with relative standard deviation less than 10% for sample net count. Compared with other methods, γ-spectrum analysis has few influencing factors, and it does not need any pretreatment process which is very convenient. Therefore, the γ-spectrum analysis is worth promoting as an alternative method in environmental radiological baseline study.
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