Sökning: "Energy-Dispersive X-ray Fluorescence"

Visar resultat 1 - 5 av 14 avhandlingar innehållade orden Energy-Dispersive X-ray Fluorescence.

1. 1. X-ray Fluorescence Spectrometry for Environmental Applications

   Författare :Siwen An; Göran Thungström; Börje Norlin; Richard Brenner; Mittuniversitetet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Heavy metal contamination in environmental applications is particularly important because of its potential impact on associated ecosystems and human health. At present, monitoring of heavy metals is usually done by taking and preparing samples for off-line laboratory measurements. LÄS MER

3. 2. X-ray based tree ring analyses

   Författare :Johan Lindeberg; Sweden Swedish university of agricultural sciences; []
   Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

   Sammanfattning : In this thesis, two x-ray based dendro-analyses (batch-wise microdensitometry and energy dispersive x-ray fluorescence (EDXRF)) and the conditions under which these methods could be used on the two typical boreal conifers Norway spruce (Picea abies (L.) Karst.) and Scots pine (Pinus sylvestris L.) were evaluated. LÄS MER

4. 3. Trace elements in fine particles and aqueous biota - A field study in Vietnam

   Författare :Annemarie Wagner; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Energy dispersive X-ray fluorescence EDXRF ; total reflection X-ray fluorescence TXRF ; graphite-furnace atomic absorption spectroscopy GF-AAS ; trace elements; Vietnam; fine particles PM2.5 ; biolocical indicators; freshwater fish C. fucus ; freshwater mussel C. bialate and P. swinhoei ; Vietnam;

   Sammanfattning : .... LÄS MER

5. 4. Spectroscopic and Microscopic X-ray Fluorescence Analysis for Environmental and Industrial Applications

   Författare :Siwen An; Börje Norlin; Göran Thungström; David Krapohl; Yuying Huang; Mittuniversitetet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Heavy metals are well-known environmental pollutants due to its potential impact on associated ecosystems and human health. Thus, it is important to monitor the levels of heavy metals in the environment. X-ray fluorescence (XRF) analysis is a powerful and effective screening tool in measuring the concentration of multi-elements simultaneously. LÄS MER

7. 5. Carved Mountains and Moving Stones : applications of Near Infrared Spectroscopy for Mineral Characterisation in Provenance Studies

   Författare :Claudia Sciuto; Johan Linderholm; Paul Geladi; Rachel Opitz; Umeå universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; Raw materials; mineral characterization; material agency; Near Infrared spectroscopy; hyperspectral imaging; Energy-Dispersive X-ray Fluorescence; multivariate statistics;

   Sammanfattning : The study of stone artefacts is a combination of anthropological archaeology and geology, rooted in analytical techniques for determining the materials’ composition, typological stylistic classification and interpretation of cultural patterns. In this thesis, the archaeology of materials is considered in the context of sites- and landscape transformation, economic history and development of techniques. LÄS MER