ISO 18589-3:2015
環(huán)境輻射性的測量.土壤.第3部分:γ輻射放射性核素的測量

Measurement of radioactivity in the environment - Soil - Part 3: Test method of gamma-emitting radionuclides using gamma-ray spectrometry

被代替

標(biāo)準(zhǔn)號: ISO 18589-3:2015
發(fā)布: 2015年
總頁數(shù): 30頁
發(fā)布單位: 國際標(biāo)準(zhǔn)化組織
替代標(biāo)準(zhǔn): ISO 18589-3:2023
當(dāng)前最新: ISO 18589-3:2023

引用標(biāo)準(zhǔn): ANSI N 42.14-1999 ASTM D3649-06 ASTM E181-10 IEC 61452:1995 IEEE 325:1996 ISO 10703:2007 ISO 11074:2005 ISO 11929:2010 ISO 18589-1:2005 ISO 18589-2:2015 ISO 80000-10:2009 ISO/IEC 17025:2005 ISO/IEC Guide 98-1:2009

本體: 半導(dǎo)體探測器

適用范圍: 本部分 specifies the identification and measurement of activity in soils of a large number of gamma-emitting radionuclides using gamma spectrometry. This non-destructive method, applicable to large-volume samples (up to about 3000 cm3), covers the determination in a single measurement of this part of ISO 18589 can be applied by test laboratories performing routine radioactivity measurements as a majority of gamma-emitting radionuclides is characterized by gamma-ray emission between 40 keV and 2 MeV. The method can be implemented using germanium or other types of detectors with a resolution better than 5 keV. This part of ISO 18589 is addressed to people responsible for determining gamma-emitting radionuclides in the environment and the inspection of a site and allows, in case of accidents, a quick evaluation of gamma activity present in soils or for the purpose of radiation protection. It is suitable for the activity of soil samples. This might concern soils from gardens, farmland, or the surveillance of urban or industrial sites that may contain building materials, rubble, as well as soils not affected by human activities. When the radioactivity characterization of unsieved material above 200 μm or 250 μm, made of petrographic nature or of anthropogenic origin such as building materials and rubble, is required, this material can be crushed in order to obtain a homogeneous sample for testing as described in ISO 18589-2.

術(shù)語	描述
校準(zhǔn)源 Calibration Source	用于校準(zhǔn)探測器的已知放射性源。
峰面積 Peak Area	在伽馬光譜中，表示特定能量峰值區(qū)域內(nèi)的計(jì)數(shù)數(shù)量。
本底 Background	環(huán)境中自然存在的輻射水平，需從測量數(shù)據(jù)中扣除。

半導(dǎo)體探測器高純度鍺晶體（HP Ge）	用于檢測伽馬射線的能量和強(qiáng)度。
多道幅度分析儀 MCA系統(tǒng)	將探測器信號轉(zhuǎn)換為能量分布的設(shè)備。

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