A study on measuring iron ore slurry using a built-in PGNAA device

IF 1.7 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2026-08-28 DOI:10.1007/s10967-026-11108-3

Pingkun Cai, Jiatong Li, Zhen Li, Daqian Hei, Wenbao Jia, Dehui Zhang, Lian Chen, Can Cheng

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引用次数: 0

Abstract

Prompt Gamma Neutron Activation Analysis (PGNAA) online analyzers are widely utilized for large-volume industrial materials. In this work, a built-in PGNAA device was used to carry out measurement experiments on iron ore slurry samples. Single-peak analysis and full spectrum analysis were separately adopted to analyze the gamma spectra of iron ore slurry, and the neutron self-shielding correction method with the H peak as internal standard was used for spectral analysis. The library-least-squares (LLS) method combined with leave-one-out cross-validation (LOOCV) method and independent validation dataset were applied for full spectrum analysis. After correction, the mean absolute error (MAE), the mean absolute percentage error (MAPE), the root mean square error (RMSE), relative standard deviation (RSD) and the type A standard relative uncertainties U_r(A) of detection results for elements including Fe, H, Si and Ca were significantly optimized, and elemental analysis data exhibited excellent measurement accuracy and repeatability. The above results verify that the built-in PGNAA device is capable of satisfying the requirements for on-line measurement of iron ore slurry samples.

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用内置PGNAA装置测量铁矿浆的研究

快速伽马中子活化分析（PGNAA）在线分析仪广泛用于大批量工业材料。本文采用内置PGNAA装置对铁矿浆样品进行了测量实验。分别采用单峰分析和全谱分析对铁矿浆的伽马能谱进行分析，光谱分析采用以H峰为内标的中子自屏蔽校正法。采用库最小二乘（LLS）方法结合留一交叉验证（LOOCV）方法和独立验证数据集进行全谱分析。校正后，Fe、H、Si和Ca元素检测结果的平均绝对误差（MAE）、平均绝对百分比误差（MAPE）、均方根误差（RMSE）、相对标准偏差（RSD）和A类标准相对不确定度Ur(A)均得到显著优化，元素分析数据具有良好的测量精度和可重复性。以上结果验证了该内置PGNAA装置能够满足铁矿石浆体样品在线测量的要求。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.