Sökning: "tandem mass spectrometry"

Visar resultat 1 - 5 av 55 uppsatser innehållade orden tandem mass spectrometry.

  1. 1. Remediation of per- and polyfluoroalkyl substances (PFAS) in contaminated water by sorption to pine- and spruce bark

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

    Författare :Rebecka Ayranci Dahlberg; [2023]
    Nyckelord :Per- and polyfluoroalkyl substances; sorption; pine bark; spruce bark; ultra-short-chain PFAS; short-and long-chain PFAS; elemental analysis; field-test;

    Sammanfattning : PFAS are anthropogenic substances used in many different industrial operations and products because of their unique properties. Due to their negative impact on human health and environmental bioaccumulative characteristics different authorities have addressed the issue. In Sweden the limit is4 ng/L for four different PFAS in drinking water. LÄS MER

  3. 2. The initial steps in the pursuit to diagnose trimethylaminuria with liquid chromatography-tandem mass spectrometry and UniSpray ionization at CMMS

    Kandidat-uppsats, Högskolan i Skövde/Institutionen för biovetenskap

    Författare :Cristian Fransson; [2022]
    Nyckelord :;

    Sammanfattning : Trimethylaminuria is an autosomal recessive disorder characterized by a decreased oxidation capacity of trimethylamine to trimethylamine-N-oxide in the liver. The condition is diagnosed by estimating concentrations of trimethylamine and trimethylamine-N-oxide in human urine and then evaluating their respective creatinine ratios and the oxidation efficiency percentage. LÄS MER

  4. 3. Method development and screening of extractable organofluorine (EOF) and targeted PFAS analysis in food packaging materials

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

    Författare :Nora Larsson; [2022]
    Nyckelord :Per- and polyfluoroalkyl substances PFAS ; Food packaging materials; Extractable organofluorine; Method development; Combustion ion chromatography; Targeted analysis;

    Sammanfattning : Per- and polyfluoroalkyl substances (PFAS) have been manufactured and used in differentapplications for several decades, including food packaging materials. During the last 20 yearsthese compounds have been acknowledged as hazardous for humans and the environment, anddifferent regulations on PFAS have been established on both national and international levels. LÄS MER

  5. 4. Classification of sequence tags from tandem mass spectrometry spectra using machine learning models

    Master-uppsats, Lunds universitet/Examensarbeten i bioinformatik

    Författare :Júlia Ortís Sunyer; [2022]
    Nyckelord :Biology and Life Sciences;

    Sammanfattning : Motivation: Proteomics is the large-scale study of all the proteins found in a cell, tissue or organism. In the last few years, and thanks to the development of mass spectrometry and bioinformatics, proteomics has led the research in several fields, ranging from medicine to agriculture. LÄS MER

  7. 5. Per- och polyfluorerade alkylsubstanser (PFAS) i odlade alger för livsmedelskonsumtion

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

    Författare :Nicolaie Kattah; [2022]
    Nyckelord :PFAS; algae; cultivation; consumption; limit value; pollution; sustainability.; PFAS; alger; odling; konsumtion; gränsvärde; förorening; hållbarhet.;

    Sammanfattning : Per- och polyfluorerade alkylsubstanser är framväxande syntetiska föroreningar som är spritt över alla ekosystem. Per- och polyfluorerade alkylsubstanser har fått ökad regulatoriska och allmän uppmärksamhet på grund av deras egenskaper av att vara persistenta, bioackumulerande i trofinnivåer och toxiska. LÄS MER