Sökning: "derivatization"

Visar resultat 1 - 5 av 14 uppsatser innehållade ordet derivatization.

  1. 1. An investigation of o-phthaldialdehyde as a derivatization reagent and optimization of instrumental parameters for qualitative amino acid profiling via UPLC-UV

    Kandidat-uppsats, Uppsala universitet/Institutionen för kemi - BMC

    Författare :Annie Aspö; [2023]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  3. 2. Modified cellulose synthesized by different deep eutectic solvents as an additive in paper making process

    Master-uppsats, Karlstads universitet

    Författare :Shiniar Said Saleh; [2023]
    Nyckelord :green chemistry; dry strength additives; deep eutectic solvents; sodium periodate oxidation; charge density; dewatering; mechanical strength.;

    Sammanfattning : The environmental concerns that come with the currently used traditional papermaking process where petroleum-based additives are used, has tempted researchers to study “green” additives by introducing environmentally friendly modifications of cellulose as an additive in the papermaking process. This thesis will spin further on that by producing additives with different charge densities and focus on to incorporate an etherification reaction into potentially greens systems based on non-toxic and readily biodegradable deep eutectic solvent (DES). LÄS MER

  4. 3. 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

  5. 4. Fullkornsintag bland barn och unga : analys av data från Livsmedelsverkets matundersökning

    Kandidat-uppsats, SLU/Department of Molecular Sciences

    Författare :Amina Laallam; [2021]
    Nyckelord :alkylresorcinoler; fullkorn; biomarkörer; matundersökningar; Livsmedelsverket;

    Sammanfattning : Det finns många studier som visar ett samband mellan låg frekvens av insjuknande i metabola sjukdomar och ett högt fullkornsintag. Hälsoeffekter relaterade till fullkorn beror på dess rika innehåll på vitaminer, mineraler och kostfibrer Hälsoeffekter kan kartläggas och studeras på befolkningens matvanor och livsstil genom nationella studier och matundersökningar. LÄS MER

  7. 5. 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