Sökning: "Oil fingerprinting"

Hittade 2 uppsatser innehållade orden Oil fingerprinting.

1. 1. Development and validation of sample clean-up using solid phase extraction prior oil spill fingerprinting

   Master-uppsats, Linköpings universitet/Institutionen för fysik, kemi och biologi

   Författare :Cheryl Loorents; [2022]
   Nyckelord :Oil spill; chemical fingerprint; solid phase extraction SPE ; development; validation.;

   Sammanfattning : In a forensic investigation involving oil, a comparative analysis named oil spill fingerprinting between a source and an oil spill is normally performed. It is based on detecting a certain selection of biomarkers with gas chromatography (GC) coupled to mass spectrometry (MS) which are later divided into diagnostic ratios (DRs). LÄS MER

3. 2. Validation of Biomarkers for the Revision of the CEN/TR 15522-2:2012 Method : A Statistical Study of Sampling, Discriminating Powers and Weathering of new Biomarkers for Comparative Analysis of Lighter Oils

   Kandidat-uppsats, Linköpings universitet/Kemi

   Författare :Robert Lundberg; [2019]
   Nyckelord :Oil fingerprinting; forensic; validation; GC-MS; oil spill sampling; diagnostic power; correlation; weathering; diesel; crude oil; biomarker;

   Sammanfattning : The revision of the CEN/TR 15522-2:2012 methodology contains new biomarkers to facilitate forensic fingerprinting of the variety of oil types that can be a part of different crimes and the purpose of this project is to validate the biomarkers of the new methodology. Biomarkers were validated by examining corresponding diagnostic ratios compatibility with the internationally used sampling cloth, discriminating power, correlation and simulated weathering sensibility through GC-SIM-MS analysis followed by statistical evaluation with t-tests, diagnostic power, Pearson correlation matrices and MS-PW plots respectively. LÄS MER