Essays about: "Mass spectrometer"

Showing result 1 - 5 of 62 essays containing the words Mass spectrometer.

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

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

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

    Abstract : 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. READ MORE

  3. 2. Evaluation of critical instrument parameters for the transfer of LC-MS quantification methods between LC-MS/MS and Orbitrap MS

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Anna Stepanova; [2023]
    Keywords : ;

    Abstract : Transferring analytical methods is crucial in chemical laboratories. The need for the transfer may arise for different reasons such as sharing data between different laboratories, replacement or upgrade of analytical instrument, or limited instruments available etc. The performance and sensitivity of different instruments may vary. READ MORE

  4. 3. Testing aerosol vertical profiling methods with portable instruments on unmanned and manned aircraft

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Ellen Grace Soroka; [2023]
    Keywords : Physical Geography; Ecosystem Analysis; Aerosols; Vertical Profile; Black Carbon; PM2.5; Nanoparticles; UAV; Drone; Master degree thesis; 30 credits in Atmospheric Science Biogeochemical Cycles; Earth and Environmental Sciences;

    Abstract : This thesis employed several portable sensors on board an unmanned aerial vehicle (UAV) and manned aircraft in order to test new methods of measuring vertical profiles of aerosol particles and contribute to knowledge of aerosol distributions in the atmosphere. More data in this area is required to improve atmospheric modelling and future climate scenarios. READ MORE

  5. 4. Pulse Shape Analysis of Si Detector Signals from Fission Fragments using the LOHENGRIN Spectrometer

    University essay from Uppsala universitet/Tillämpad kärnfysik

    Author : Dimitrios Papaioannou; [2023]
    Keywords : plasma delay time; PDT; pulse shape analysis; waveform; LOHENGRIN; nuclear; fission;

    Abstract : Nuclear physics experiments typically involve the collection and analysis of detector signals produced by the interaction of subatomic particles with matter to deduce various quantities. When heavy ions are involved, Si Detector signals are distorted by the formation of a plasma-like cloud from the interaction between the heavy ions and the detector material. READ MORE

  6. 5. Investigation of the Plasma delay time in PIPS detectors using the LOHENGRIN spectrometer

    University essay from Uppsala universitet/Tillämpad kärnfysik

    Author : Elizaveta Yakovleva; Ivar Wikander; [2022]
    Keywords : ;

    Abstract : This project has examined the effects of plasma delay time (PDT) and pulse height defect (PHD) for protons, tritons and alpha particles. The goal was to determine PDT and PHD for alpha particles relative to protons, by using data from a subset of measurements taken with a silicon detector of type PIPS at the LOHENGRIN spectrometer. READ MORE