Essays about: "gc ms"

Showing result 11 - 15 of 99 essays containing the words gc ms.

  1. 11. Development and validation of sample clean-up using solid phase extraction prior oil spill fingerprinting

    University essay from Linköpings universitet/Institutionen för fysik, kemi och biologi

    Author : Cheryl Loorents; [2022]
    Keywords : Oil spill; chemical fingerprint; solid phase extraction SPE ; development; validation.;

    Abstract : In a forensic investigation involving oil, a comparative analysis named oil spill fingerprinting between a source and an oil spill is normally performed. It is based on detecting a certain selection of biomarkers with gas chromatography (GC) coupled to mass spectrometry (MS) which are later divided into diagnostic ratios (DRs). READ MORE

  3. 12. Non-target screening of sediment samples fromthe Canadian Arctic: comparing two different gas chromatography – high resolution mass spectrometry (GC-HRMS) techniques

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Mathilda Timner; [2022]
    Keywords : Arctic marine sediment ׀ GC×GC-HR-ToF-MS ׀ GC-Orbitrap-MS ׀ Identification ׀ Non-target screening ׀ Organic pollutants;

    Abstract : Since the late 18th century, chemicals have been industrially produced, and used by consumers. Today, the number of registered chemicals are over 150 000 in North America and Europe alone, and the number is predicted to increase. READ MORE

  4. 13. Inhibited surface-thiols in Geobacter sulfurreducens : Mercury uptake and methylation rates

    University essay from Umeå universitet/Kemiska institutionen

    Author : Andreas Granström; [2021]
    Keywords : ;

    Abstract : Due to daily human (anthropogenic) industrial activity, a lot of elemental mercury (Hg0) has been released to the atmosphere. The mercury can then spread globally, since mercury has the ability to remain atmospheric for up to a year. When mercury deposits, it can end up in anaerobic environments such as sediments and soil. READ MORE

  5. 14. Experimental Study of Internal Injector Deposits In Internal Combustion Engines Using Renewable Fuels

    University essay from KTH/Materialvetenskap

    Author : Patrick Kiprotich Korir; [2021]
    Keywords : ;

    Abstract : The  strive  to  minimize  emissions  in  the  automotive  industry  keeps gaining momentum. Continuous improvement of engine designs and development of more efficient  fuel  systems  in  diesel  vehicles  is  a  solution to  be  applauded. READ MORE

  6. 15. Analyzing components of barrier coatings in different fractions during a repulping process.

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Evelina Särnholm; [2021]
    Keywords : ICP-MS; MP-AES; GC-MS; repulping process; paper; poly ethylene-co-acrylic acid ;

    Abstract : During paper manufacturing, coating and adhesives are added to paper and cardboard to improve quality and durability. When the paper is later recycled or becoming new paper, the coatings may pollute the water used in the recycling process. Thus, it is important to know in which fraction these coatings finish during the process. READ MORE