El pensamiento jurídico. Pasado, presente y perspectiva. Libro homenaje al Profesor Juan José Gil Cremades. [Reseña]

Reseña de: Maria ELÓSEGUIITXASO, Femando GALINDO AYUDA (coords.). El pensamiento jurídico. Pasado, presente y perspectiva. Libro homenaje al Profesor Juan José Gil Cremades, El Justicia de Aragón, Zaragoza, 2008, 1103 pp

Responsabilità, rischio diritto e postmoderno. Percorsi di filosofía e fenomenologia giuridica e morale. [Reseña]

Reseña de: Alessandro ARGIROFFI y Luisa AVITABILE, Responsabilità, rischio diritto e postmoderno. Percorsi di filosofía e fenomenologia giuridica e morale, G. Giappichelli Editore, Torino, 2008, 291 pp

Acciones positivas para las mujeres en las Organizaciones Internacionales. [Reseña]

Reseña de: Paloma DURÁN Y LALAGUNA, Acciones positivas para las mujeres en las Organizaciones Internacionales, La Ley-Consejo General de la Abogacía Española, Madrid, 2008, 342 pp

Quick Analysis of Organic Amendments via Portable X-ray Fluorescence Spectrometry

The determination of heavy metals in soils and organic amendments, such as compost, manure, biofertilizer, and sludge, generally involves the digestion of samples with aqua regia, and the determination of those in the solution using various techniques. Portable X-ray fluorescence (PXRF) has many advantages in relation to traditional analytical techniques. However, PXRF determines the total elemental content and, until now, its use for the analysis of organic amendments has been limited. The objective of this work is the calibration of a PXRF instrument to determine the aqua regia-soluble elemental contents directly in solid samples of organic amendments. Our proposal will avoid the digestion step and the use of other laboratory techniques. Using a training set of samples, calibration functions were obtained that allow the determination of the aqua regia-soluble contents from the PXRF readings of total contents. The calibration functions (obtained by multiple linear regression) allowed the quantitative determination of the aqua regia-soluble contents of Fe, K, P, S, Zn, Cu, Pb, Sr, Cr, and Mn, as well as the organic matter content and a semi-quantitative assessment of Al, Ca, V, Ba, Ni, and As contents. The readings of Si, Fe, Al, Ca, K, or S were used as correction factors, indicating that the calibrations functions found are truly based on the chemical composition of the sample matrix. This study will allow a fast, cheap, and reliable field analysis of organic amendments and of other biomass-based materials.Spanish Ministry of Science, Innovation and Universities, and the European Regional Development Fund, European Union, (AEI/FEDER, UE), grant number CGL2016-78937-R

¿Hacia un paradigma cosmopolita? : pluralismo juridico, ciudadanía y resolución de conflictos. [Reseña]

Reseña de: Nuria BELLOSO MARTÍN, Alfonso DE JULIOS-CAMPUZANO (coords,), ¿Hacia un paradigma cosmopolita? : pluralismo juridico, ciudadanía y resolución de conflictos. Instituto Internacional de Sociología Jurídica de Oñati, Dykinson, Madrid, 2008, 365 pp