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Geoquímica de elementos mayores aplicada al análisis forense en suelos arcillosos. Estudio de caso y análisis de alcance

Authors: López Julián, Pedro Luis; Pueyo Anchuela, Óscar; Al-Fawal Portal, Miryam;

Geoquímica de elementos mayores aplicada al análisis forense en suelos arcillosos. Estudio de caso y análisis de alcance

Abstract

En este trabajo se aborda el análisis de un grupo de muestras procedentes de suelos arcillosos de una misma parcela de estudio a través del análisis químico de elementos mayores. El estudio se dimensiona como si de un estudio forense se tratara en la ubicación de un delito y se valoran las certidumbres asociadas a este tipo de estudios, comparando con la interpretación habitual en campos de la geología y su trasposición a estudios de índole legal, pericial y judicial. Se valora la precisión alcanzada en condiciones óptimas de muestreo, preparación y uso de técnicas analíticas, y se discute su variabilidad en función del contexto geológico y edafológico. Estos resultados permiten identificar que, aunque todas las muestras proceden de una misma zona geográfica y están muy próximas entre sí, sus contenidos medidos en elementos mayores exhiben variaciones entre el 2% y el 8%, rangos de precisión razonables en estudios científicos descriptivos y para este contexto geológico, pero que deben ser valorados y presentados de forma adecuada en el caso de tratarse de un estudio forense. Estos datos son analizados posteriormente de forma inversa, para establecer que la variabilidad de los resultados no permitiría afirmar taxativamente un origen geográfico común In this work, a group of samples from clayey soils of the same study area has been analyzed in terms of major elements geochemistry. The study is designed as a usual forensic analysis with the aim of locating a crime and where to evaluate the certainties associated with this type of studies. Usual geological methodologies are evaluated in order to its transposition to judicial affairs. These results have been obtained at optimal conditions of sampling and preparation, and where the use of analytical techniques can be controlled in terms of its geological and edaphological meaning. Results, even when they have been obtained in the same sampling environment, show a wide variability in terms of major elements with variations between 2% and 8%. These ranges agree with the intrinsic variability of the analyzed environment, and within the expected results in a scientific analysis, but they are not at reasonable ranges of accuracy for a judicial subject. This suggests that results presentation requires to be submitted in an appropriate manner at the forensic studies. These data are subsequently analyzed in an inverse manner, to determine that the variability of the results would not allow asserting without doubt a common geographical origin

Country
Spain
Related Organizations
Keywords

Clayey soil, Elementos mayores, Geochemistry, Variabilidad natural, Forensic, Geoquímica, Natural variability, Suelo arcilloso, Forense, Major element

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green