Essays about: "Gas chromatography"

Showing result 1 - 5 of 97 essays containing the words Gas chromatography.

  1. 1. Gas Chromatography Mass Spectrometry Analysis of Epoxides in Gas Phase Reactions

    University essay from KTH/Kemi

    Author : Stephanie Kylington; [2022]
    Keywords : organic peroxy radicals; unsaturated alkenes; TD-GCMS; Tenax® TA; internal standard; organiska peroxidradikaler; omättade alkener; TD-GCMS; Tenax® TA; intern standard;

    Abstract : En nyligen genomförd studie visade att reaktioner mellan vissa radikaler och omättade alkener är snabbare vid rumstemperatur än vad man tidigare har trott. Dessa reaktioner är viktiga för atmosfäriska oxidationscykler och följaktligen var syftet med detta masterprojekt att beräkna hastighetskonstanterna för dessa reaktioner mellan metyljodid och 1-jodidpentan med tetrametyletylen, isopren och limonen vid rumstemperatur genom att kvantifiera respektive epoxid; tetrametyloxiran, isoprenmonoxid och limonen 1,2 epoxid, som producerades. READ MORE

  2. 2. Identification of photodegradation products from commonenvironmental pollutants using gas chromatography coupled withhigh resolution mass spectrometry

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Vanessa Cajes; [2022]
    Keywords : Photodegradation; Organic contaminants; High resolution mass spectrometry; Identification; Spectral library;

    Abstract : Photodegradation is a major degradation mechanism for many environmental contaminants, both in indoor environments as well as in outdoor environments, and many of the contaminants are persistent and toxic. However, there is a lack of knowledge about the exact degradation process for many of them. READ MORE

  3. 3. Toward prototyping metabolic pathways in cyanobacteria using cell extracts

    University essay from KTH/Proteinvetenskap

    Author : Amina Bensabra; [2022]
    Keywords : cyanobacteria; metabolic engineering; cell-free metabolic engineering; enzymes; sustainability; cyanobakterier; metabolisk genteknik; syntetisk biologi; enzymer; hållbar bioproduktion;

    Abstract : Cyanobakterier är intressanta mikroorganismer för produktion av biobränslen från solljus, vatten och atmosfärisk koldioxid och anses därför vara potentiella mikrobiella cellfabriker. Men på grund av långsam tillväxt och låg produktion är genteknologi processen intensiv och tidskrävande för cyanobakterier. READ MORE

  4. 4. Fatty acid composition in Arctic char (Salvelinus alpinus) fed with red yeast biomass : a comparison between large and small specimens

    University essay from SLU/Department of Molecular Sciences

    Author : Sofia Jacobsson; [2022]
    Keywords : Fatty acid composition; lipid content; oleaginous yeast; Arctic char Salvelinus alpinus ; aquaculture;

    Abstract : Oleaginous yeast has shown to be a promising alternative to replace vegetable oils in fish feed. A problem in aquaculture is that different growth rates can be observed among farm-raised fish, supressing the productions full potential. When different growth rates are observed, it can be questioned if the fish assimilate the feed to the same extent. READ MORE

  5. 5. The application of low-cost sensors in estimates of greenhouse gases : A field study at a wastewater treatment plant

    University essay from Linköpings universitet/Filosofiska fakulteten; Linköpings universitet/Tema Miljöförändring

    Author : Daniel Montecinos; Saga Magnusson; [2022]
    Keywords : Methane; Carbon dioxide; wastewater treatment; Low-cost sensor network; Measurement; Environmental monitoring;

    Abstract : Anthropogenic activity has caused increased concentrations of greenhouse gases (GHGs) in the atmosphere which has resulted in global warming gaining momentum. GHG emission estimates up to date are insufficient and in order to mitigate GHG emissions of anthropogenic origin fluxes of GHGs need to be mapped. READ MORE