Title of Paper:Study on the PGNAA. measurement of heavy metals in aqueous solution by the Monte Carlo Library Least-Squares (MCLLS) approach

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Affiliation of Author(s):材料科学与技术学院

Journal:APPLIED RADIATION AND ISOTOPES

Key Words:PGNAA Heavy metals MCLLS Relative deviation

Abstract:In the present work, a prompt gamma neutron activation analysis (PGNAA) setup, which consists of a 300 mCi (241)Americium-Beryllium (Am-Be) neutron source and a 4 x 4-in. Bismuth germanium oxide (BGO) detector, was developed for heavy metal detection in aqueous solutions. A series of standard samples with analytical purity were prepared by dissolving heavy metals in deionized water. Quantitative spectrum analysis was performed by the Monte Carlo-Least-Squares (MCLLS) approach to measure the standard samples. The detector response functions of 4 x 4-in. EGO detector were generated by using the CEARDRF code. The element libraries were simulated in silico by the CEARCPG code, which was developed by Dr. Gardner. The simulation results presented were in very good agreement with the experimental results. The correlation coefficients were very close to 1 when the fitted spectrum was compared with the experimental spectrum. By applying the MCLLS approach, the relative deviation of the measurement accuracy was less than 2.27% for Ni, Mn, and Cu and up to 69.33% for Pb.

ISSN No.:0969-8043

Translation or Not:no

Date of Publication:2018-02-01

Co-author:Gardner, Robin,Shan, Qing,F70205423

Correspondence Author:Jia WB