2026-06-28T14:49:20Zhttps://docta.ucm.es/rest/oai/request
oai:docta.ucm.es:20.500.14352/1306532026-01-21T00:47:46Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense author Martínez Del Pozo, Iker author Gómez Pachón, Mónica Celina author Ferri Moreno, Inmaculada author García Lorenzo, María de la Luz author Lorenzo Álvarez, Saturnino author Barquero Peralbo, Jose Ignacio author Arroyo Rey, Xabier author Higueras Higueras, Pablo author Esbrí Víctor, José María 2026-01-20T19:26:02Z 2026-01-20T19:26:02Z 2026-03 Martínez-del-Pozo, I., Gómez-Pachón, M. C., Ferri-Moreno, I., García-Lorenzo, M. L., Lorenzo, S., Barquero-Peralbo, J. I., Arroyo, X., Higueras, P., & Esbrí, J. M. (2026). Portable X-ray fluorescence (Pxrf) application to the determination of major and trace elements in large soil datasets for geochemical background assessment. Journal of Geochemical Exploration, 282, 107961. https://doi.org/10.1016/j.gexplo.2025.107961 0375-6742 10.1016/j.gexplo.2025.107961 https://hdl.handle.net/20.500.14352/130653 1879-1689 https://doi.org/10.1016/j.gexplo.2025.107961 https://www.sciencedirect.com/science/article/pii/S0375674225002936 Regional soil geochemical surveys are essential for land-use planning and human health. However, projects involving large sample sets characterised using traditional laboratory techniques are costly, time-consuming and require a large number of reagents. Therefore, the use of portable X-ray fluorescence (pXRF) with an optimised measurement time and methodology, along with minimal sample preparation, allows for fast and effective measurements. In this study, using Soil-Fundamental Parameters (S-FP) method, a measurement time of 45 s and low sample preparation yielded acceptable results for K, Ca, Ti, Cr, Mn, Fe, Ni, Cu, Zn, As, Rb, Sr, Zr, and Pb, which were monitored with benchtop XRF equipment. The application of this methodology in Cuenca province, Spain, and the comparison with different European and national programmes provides consistency in the results, despite using different analytical techniques. It was observed that a systematic and regular sampling strategy avoids geochemical gaps, increasing the representativeness of the soil parent material in the samples. Distinct geochemical patterns have been identified, with a major group comprising Ti, Mn and Fe, and trace elements such as Cr, Ni, Cu, Zn, As, Rb, Sr, Zr and Pb, while K, Ca and Sr display individual distribution trends. Therefore, this study provides a rapid and economical way to characterise soil geochemistry in large areas and to establish background and reference levels over extensive regions. eng Attribution 4.0 International Portable X-ray fluorescence (pXRF) application to the determination of major and trace elements in large soil datasets for geochemical background assessment journal article 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URL https://docta.ucm.es/bitstreams/e2aa0b1e-9910-405a-939c-e72d409f41c4/download File MD5 27de19857e7b02b60e97834abe7313e7 18234605 application/pdf Portable X-ray fluorescence.pdf