Sökning: "chemical derivatization"

Hittade 2 uppsatser innehållade orden chemical derivatization.

1. 1. 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

3. 2. Implementation of a straightforward derivatizationmethod for the simultaneous analysis of short chainfatty acids and tricarboxylic acid cycle metabolitesby LC-qToF-MS.

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

   Författare :Renée Levisson; [2021]
   Nyckelord :Short-chain fatty acids; tricarboxylic acid TCA cycle; chemical derivatization; 3-nitrophenylhydrazine;

   Sammanfattning : Short-chain fatty acids (SCFAs) and the tricarboxylic acid (TCA) cycle metabolites aresmall hydrophilic compounds that play crucial roles in biological species ranging fromenergy metabolism, immune homeostasis to cellular signalling. There is a need for reliableand precise quantification of these metabolites in biological matrices as they can providecrucial information of metabolic status and potentially be used as diagnostic biomarkersfor different pathological and physiological conditions. LÄS MER