Search results for "ED-XRF"
showing 4 items of 4 documents
Lāzerinducētās sagraušanas spektroskopijas un enerģijas dispersīvās rengenfluoriscences metožu pielietojums zāļu tēju paraugu pētījumos
2022
Lāzerinducētās sagraušanas spektroskopijas un enerģijas dispersīvās rengenfluoriscences metožu pielietojums zāļu tēju paraugu pētījumos. Černiševs R.., darba vadītāji Mg.chem. Bērtiņš M., Dr.sc.ing. Brangule A. Bakalaura darbs, 39 lappuses, 16 attēli, 13 tabulas, 28 literatūras avoti. Latviešu valodā. Darbā tika veikta zinātniskās literatūras izpēte un apkopojums par spektroskopijas metodēm, ko var izmantot ķīmisko elementu kvalitatīvo un kvantitatīvo noteikšanai. Praktiskajā daļā tika veikta zāļu tēju analīze izmantojot rentgenfluoriscences spektroskopiju un lāzerinducētās sagraušanas spektroskopijas metodēm.
MICROSCOPIC TECHNIQUES AND A MULTI-ANALYTICAL APPROACH TO CHARACTERIZE THE MATERIALS OF TWO RUSSIAN ICONS
2018
Two 19th century Russian icons, from the Museo Diocesano of Palermo, were analysed by UV photography, X-ray fluorescence, energy-dispersive X-ray fluorescence (ED-XRF), optical microscopy, micro-Raman spectroscopy and Scanning Electron Microscopy, combined with energy dispersive x-ray analysis, (SEM/EDS). The multi-analytical study of the icons “Protezione della Madre di Dio” (Pokrov’s Icon, Protection of Holy Mother of God) and ‘’Madre di Dio Gioia di Tutti gli Afflitti’’, (Holy Mother of God, Joy of all the afflicted), have been performed to reveal materials and technological features of the original painting of the 19th century as well as the materials used during past restoration works.…
The panel painting represinting Madonna con bambino e San Giovanni of Museo Diocesano of Palermo: Scientific studies for the restoration
2017
The present research focuses on a painting on wood representing the Madonna con Bambino e San Giovanni, attributed to an unknown artist belonging to the Cretan-Venetian school, dated to the end of 16th century. The aim of the study is to provide a complete knowledge of the characteristics of the artefact in order to plane and perform a procedure according to conservative restoration. Historical and artistic evaluations and technical investigations were carried out for identifying the context, the constitutive materials and the executive techniques. The study was supported by the application of non-invasive (multispectral investigations and X-ray Fluorescence Spectroscopy) and analytical tec…
Estrategias verdes para el análisis de muestras alimentarias y medioambientales
2021
Los retos actuales de la Química Analítica Verde son el desarrollo, y su implementación en el análisis de rutina, de nuevas metodologías “verdes”, que sean más sostenibles con el medio ambiente. Por ello, el objetivo de esta tesis es desarrollar métodos de análisis directos mediante el empleo de la fluorescencia de rayos X en la determinación del perfil mineral y fomentar el uso del Smartphone como una herramienta de análisis complementaria a las técnicas convencionales en la determinación de compuestos de interés en muestras de alimentos y medioambientales. La presente tesis se estructura en 7 capítulos que de acuerdo con su temática pueden clasificarse en dos apartados: 1. Análisis de ali…