Sökning: "SPME"

Visar resultat 1 - 5 av 11 uppsatser innehållade ordet SPME.

  1. 1. Lithium-ion Battery Modeling and Simulation for Aging Analysis using PyBaMM

    Master-uppsats, Linköpings universitet/Institutionen för systemteknik

    Författare :Amina Coric; [2022]
    Nyckelord :Battery charging; Lithium-ion; Doyle-Fuller Newman; P2D; Single Particle Model; Pulse Charging; Constant Current Constant Voltage; Solid Electrolyte Interphase; SEI; Lithium Plating; Cycle Life; Cyclic Aging; PyBaMM; Batteri laddning; Litiumjonbatteri; Doyle-Fuller Newman; P2D; Singelpartikelmodell; Pulsad Laddning; Konstant Ström Konstant Spänning; Fast Elektrolytinterfas; SEI; Litiumplätering; LP; Cykellivslängd; Cykliskt Åldrande; PyBaMM;

    Sammanfattning : The rate of degradation of a lithium-ion battery depends on its use i.e. how it is charged and discharged. Physics-based models are used to represent the processes inside a cell as well as the degradation mechanisms. LÄS MER

  3. 2. Generell metod för analys av pesticider med HS-SPME i kombination med GC-MS : Möjligheten att identifiera pesticider i känd lösning och i förgiftningsfall

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

    Författare :Samuel Eliasson Heino; [2022]
    Nyckelord :Gas chromatography-mass spectrometry; Pesticides; Intoxication; Limit of detection; headspace-SPME; EPA 8151; Detection; Derivatization; Separation;

    Sammanfattning : This study focuses on a general method that has been developed for the identification of both polar- and nonpolar pesticidespolar pesticides in a known solution from EPA 8151 Herbicide acid mix by Merck including the ordered non-polar pesticide Prosulfocarb. The EPA-solution contains 16 analytes that has been completely identified when derivatized and spiked in acetone. LÄS MER

  4. 3. Development of an analytical method for the screening of meaty flavors in commercial foodstuff by SPME-GC/O-MS

    Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

    Författare :Ioannis Protopappas; [2021]
    Nyckelord :Gass Chromatography; Mass spectrometry; Meaty flavors; Aromas; Solid pahse microextraction; Mallaird; Lipid degradation; Food technology; Agriculture and Food Sciences;

    Sammanfattning : The aim of the project was to develop a methodology for the chromatographic analysis able to identify the key odorants in meaty food products. The approach was based on the analysis of an already in market product and the theoretical background of the meaty flavors sensorially. LÄS MER

  5. 4. 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

  7. 5. SPME Method for Chemical Analysis of Heavy Organic Trace Compounds in Synthesis Gas

    Kandidat-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Constancia Felise Elemia Freire; Simon Edin; Chang Ho Lee; [2020]
    Nyckelord :;

    Sammanfattning : There currently exists no commercialized method for rapid sampling and analysis of trace tar ingas streams. Solid phase microextraction (SPME) with a polydimethylsiloxane (PDMS) solidphase has been previously investigated as a possible candidate due to its solvent-free natureand reusability. LÄS MER