Effects of the composition of standard reference material on the accuracy of determinations of 210Pb and 137Cs in soils with gamma spectrometry.
The effect of the composition of the used standard reference material (SRM) on results of determination of fallout radionuclides in soil samples was studied. Using five soil types as SRMs, we measured the specific activity of (210)Pb and (137)Cs in six target samples of Chestnut soil. It was observed that the determination of the (210)Pb activity in the samples depended on the chemical composition of SRMs used to create the efficiency curves. Thus, using SRMs similar in chemical composition to the target samples should improve accuracy in the determination of (210)Pb in environmental samples.
State Key Laboratory of Dryland Farming and Soil Erosion in the Loess Plateau, Institute of Soil and Water Conservation, CAS and MWR, Yangling 712100, China. yongli32@hotmail.com
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Y
Li
X C
XC
Geng
H Q
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Yu
G J
GJ
Wan
D002588:Cesium Radioisotopes / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods; D007856:Lead Radioisotopes / Q000032:analysis*; D011847:Radioactive Fallout / Q000032:analysis; D012015:Reference Standards; D012987:Soil / Q000032:analysis; D012990:Soil Pollutants, Radioactive / Q000032:analysis*; D013051:Spectrometry, Gamma / Q000592:standards*
D002588:Cesium Radioisotopes; D007856:Lead Radioisotopes; D011847:Radioactive Fallout; D012987:Soil; D012990:Soil Pollutants, Radioactive