Sökning: "gas chromatography-mass spectrometry GC-MS ."

Visar resultat 6 - 10 av 33 uppsatser innehållade orden gas chromatography-mass spectrometry GC-MS ..

1. 6. Preliminary Investigation into Quantitation of Pharmaceuticals in Lake Victoria Sediments : Development of a Method for Analysis of 11 Pharmaceuticals

   Master-uppsats, Linköpings universitet/Tema Miljöförändring

   Författare :Robert Lundberg; [2021]
   Nyckelord :Lake Victoria; pharmaceutical; sediment; core; ASE; SPE; derivatization; GC-MS MS; GC-MS; 210Pb;

   Sammanfattning : Although Lake Victoria is threatened by pollution there is a lack of knowledge about pharmaceuticals contaminants drained into the lake from large cities bordering the lake. Hence, the purpose of this project was to develop, validate and apply a method for analysis of pharmaceutical compounds accumulating in the Lake Victoria sediments. LÄS MER

3. 7. Optimization of solid-phase extraction (SPE) as sample preparation for oil samples in forensic investigations.

   Kandidat-uppsats, Örebro universitet/Institutionen för naturvetenskap och teknik

   Författare :Aamanda Chang; [2021]
   Nyckelord :Solid-phase extraction SPE ; heavy fuel oil HFO ; fingerprint; polycyclic aromatic hydrocarbons PAHs ; biomarkers.;

   Sammanfattning : Oil spills, especially in water have happened throughout the years. The consequences from this kind of incident have always been a threat to marine life and take a lot of money and time to clean up. LÄS MER

4. 8. Development of headspace solid phase microextraction gas chromatography mass spectrometry method for analysis of volatile organic compounds in board samples : Correlation study between chromatographic data and flavor properties

   Master-uppsats, Karlstads universitet/Institutionen för ingenjörs- och kemivetenskaper (from 2013)

   Författare :Thea Zethelius; [2021]
   Nyckelord :Solid phase microextraction SPME ; method development; volatile organic compounds VOCs ; food contact material FCM ; flavor experience; design of experiment DoE ; multivariate analysis;

   Sammanfattning : The purpose of this thesis work was to develop a headspace solid phase microextraction gas chromatography mass spectrometry (HS-SPME-GC-MS) method to detect volatile organic compounds (VOCs) in board samples and to statistically investigate potential correlation between chromatographic data and flavor data obtained from a trained panel. The developed method would hopefully serve as a complement to the already established routine analyses at Stora Enso and gain an increased understanding of which VOCs in the board influence its flavor properties. LÄS MER

5. 9. Method Development for Sample Preparation of Fish for Non-target Analysis of Hydrophobic Organic Pollutants

   Master-uppsats, Örebro universitet/Institutionen för naturvetenskap och teknik

   Författare :Bergdís Björk Bæringsdóttir; [2020]
   Nyckelord :;

   Sammanfattning : Monitoring methods for environmental pollutants are mostly performed with targeted analysis which relies on predetermined compounds. This can cause an underestimation of possible toxicants as it might not detect undiscovered compounds such as breakdown products of other chemicals. LÄS MER

7. 10. Direkta kvantifieringsmetoder av etylenglykol i patientprov : En litteraturstudie

   Kandidat-uppsats, Jönköping University/HHJ, Avd. för naturvetenskap och biomedicin

   Författare :Viktor Kindbom; Wasim Othman; [2020]
   Nyckelord :enzymatic method; thermal desorption-gas chromatography; comparison; sensitivity; specificity; enzymatisk metod; termisk desorption-gaskromatografi; jämförelse; sensitivitet; specificitet;

   Sammanfattning : Etylenglykol (EG) är ett toxiskt ämne som kan orsaka livsfarliga komplikationer. Syftet med studien var att genom systematiska litteratursökningar göra en sammanställning och en jämförelse av metoder som används för direkt kvantifiering av EG i patientprov. LÄS MER