235U裂变反应诱导140Ba/140La分析铀的研究

IF 1.5 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-09-21 DOI:10.1007/s10967-024-09769-z

Jong-Hwa Moon, Seong-Pyo Hong, Kishore B. Dasari

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引用次数: 0

摘要

140Ba是235U的裂变产物，衰变为140La。采用235U中的140La和140La的校正系数，探讨了地质环境样品中铀的分析方法。为了验证该方法，选择了三种NIST srm并在HANARO研究堆上辐照。通过第一次和第二次测量，可以用两种不同的La浓度来测定SRM样品中的U含量。相对误差在SRM样品U值的10%以内。该方法适用于没有认证值的NIST SRM 1648a-城市颗粒物。SRM 1648a中U的测量值为4.90±0.20 mg/kg。

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Investigation of uranium analysis using 140Ba/140La induced from 235U fission reaction

¹⁴⁰Ba is a fission product of ²³⁵U and decays to ¹⁴⁰La. Analytical method of uranium in geological and environmental samples was investigated by using ¹⁴⁰La from ²³⁵U and the correction factor of ¹⁴⁰La. For the method validation, three kinds of NIST SRMs were chosen and irradiated at the HANARO research reactor. The first and second measurements for the detection of ¹⁴⁰La were performed, and the U content in SRM samples can be determined by two different La concentrations. The relative errors are within 10% of U values in the SRM samples. This method is applied for a NIST SRM 1648a-Urban Particulate Matter, which has no certified value. The measured value of U in SRM 1648a is 4.90 ± 0.20 mg/kg.

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来源期刊

Journal of Radioanalytical and Nuclear Chemistry 化学-分析化学

CiteScore

2.80

自引率

18.80%

发文量

504

审稿时长

2.2 months

期刊介绍： An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.