Sökning: "analytical chemistry"

Visar resultat 16 - 20 av 57 uppsatser innehållade orden analytical chemistry.

  1. 16. Developing complementary supercritical fluid chromatographic methods for a high throughput purification process

    Master-uppsats, Karlstads universitet

    Författare :Alma Söderström; [2022]
    Nyckelord :Supercritical Fluid Chromatography; Pharmaceutical Industry; Column screening; Green chemistry; Superkritisk vätskekromotografi; Läkemedelsindustri; Kolonn set; Grön kemi;

    Sammanfattning : Supercritical fluid chromatography (SFC) is an expanding chromatographic technique that is part of the evolving field of green chemistry due to its short run times and use of non-toxic solvents in combination with recycled CO2. The use of a suitable column is essential for separation science in general and there is a wide variety of SFC compatible columns available on the market. LÄS MER

  3. 17. Development and validation of an ultrahigh-performance liquid chromatography method for identity, assay and impurity testing of nicotine and preservatives in nicotine nasal spray

    M1-uppsats, Lunds universitet/Centrum för analys och syntes

    Författare :Amane Kandas; [2021]
    Nyckelord :Nicotine; Nicotine nasal spray; Ultrahigh-performance liquid chromatography; Development; Validation; Technical analytical chemistry; Chemistry;

    Sammanfattning : The topic of this study is to develop and validate an analysis method of nicotine nasal spray produced at McNeil AB. When developing the analysis method, several parameters were determined in advance to make the method more similar to other analysis methods at the company, making it more practical. LÄS MER

  4. 18. Pressure-based clog detection in SPE-columns

    Master-uppsats, Uppsala universitet/Institutionen för elektroteknik

    Författare :Elias Johansson; [2021]
    Nyckelord :Solid-phase extraction; SPE; Biotage; Extrahera; Analytical chemistry; Life-science; Medtech; Analytisk kemi; Naturvetenskap; Kemi;

    Sammanfattning : The concept of integrated sensors in the Biotage® Extrahera™ system to perform live-monitoring of pressure inside SPE-columns is investigated. A test-rig containing the components necessary to simulate the pressure-cycle in the system is constructed and a printed-circuit board assembly is designed and implemented into its 24-column format. LÄS MER

  5. 19. Dispersed bio-based binders as drop-in solution for non-woven industry

    Master-uppsats, KTH/Fiber- och polymerteknologi

    Författare :Emma Ingo; [2021]
    Nyckelord :Dispersion; Modified Biopolymers; Non-Woven; Binders; Green Chemistry; Dispersion; Modifierade Biopolymerer; Non-Woven; Bindemedel; Grön Kemi;

    Sammanfattning : Sammanfattning på svenska: Målet med projektet var att utveckla ett system av disperserade bindemedel för non-wovenindustrin som inte förutsätter omfattande förändringar i befintliga processer. Bindemedlet ska vara biobaserat, bionedbrytbart och endast bestå av byggstenar som är matkontaktsgodkända av FDA och BFR. LÄS MER

  7. 20. The impact of various chromatographic conditions on the separation of modified and unmodified oligonucleotides

    Kandidat-uppsats, Karlstads universitet

    Författare :Lewis Frazer; [2021]
    Nyckelord :Oligonucleotide; Modified oligonucleotides; Ion-pair chromatography; Chromatography; Analytical chemistry; TEAA; DBA; Chemistry; Oligonukleotid; Modifierade oligonukleotider; Jonpars kromatografi; Kromatografi; Analytisk kemi; TEAA; DBA; Kemi;

    Sammanfattning : In this study, the effects of certain chromatographic conditions on various modified and unmodified oligonucleotides were investigated. At the forefront of this study was the investigation of a new Ion-pair Reversed-phase liquid chromatography (IP-RPLC) method, that had the potential to replace a previously established triethylammonium acetate (TEAA) IP-RPLC method developed for oligonucleotide separations. LÄS MER