Sökning: "isotope ratio"
Visar resultat 1 - 5 av 49 avhandlingar innehållade orden isotope ratio.
1. Intramolecular isotope analysis reveals plant ecophysiological signals covering multiple timescales
Sammanfattning : Our societies' wellbeing relies on stable and healthy environments. However, our current lifestyles, growth-oriented economic policies and the population explosion are leading to potentially catastrophic degradation of ecosystems and progressive disruption of food chains. LÄS MER
2. Isotope Ratio and Trace Element Measurements Using Inductively Coupled Plasma – Mass Spectrometry : Method Development and Applications in Environmental Forensics
Sammanfattning : Environmental Forensics is a scientific methodology developed for identifying sources, the timing of release, and transport pathways for potentially hazardous environmental contaminants. It combines a variety of analytical methods with principles derived from disciplines such as chemistry, geology, geochemistry, hydrogeology, and statistics, with the purpose to provide objective scientific and legal conclusions on the source and/or time of a contaminant release. LÄS MER
3. Identification of brominated organic compounds in aquatic biota and exploration of bromine isotope analysis for source apportionment
Sammanfattning : Brominated organic compounds (BOCs) of both natural and anthropogenic origin are abundant in the environment. Most compounds are either clearly natural or clearly anthropogenic but some are of either mixed or uncertain origin. LÄS MER
4. Development of techniques for light isotope analysis at LIBAF
Sammanfattning : The overall goal of this thesis is to test new detector technologies and data acquisition systems, for use in Ion Beam Analysis IBA. This is intended to complement the existing setup, which is routinely used at Lund Ion beam Analysis Facility LIBAF. LÄS MER
5. An investigation of the radiation chemistry of a hydrocarbon system and simulation of ESR spectra of triplet state molecules
Sammanfattning : This thesis can be divided into two parts.The aim of the studies described in the first part of the thesis isto make clear the dominating processes in the selective decorrpositionof certain solutes that follow low-terrperature radiolysis of crystalline hydrocarbons.1. LÄS MER