Sökning: "APPI"

Hittade 3 avhandlingar innehållade ordet APPI.

  1. 1. Packed Column Supercritical Fluid Chromatography Applications in Environmental Chemistry

    Detta är en avhandling från Örebro : Örebro University

    Författare :Nicole Riddell; Örebro universitet.; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Supercritical Fluid Chromatography; Mass Spectrometry; Ionization; POPs; APPI; APCI; chiral; achiral; packed column;

    Sammanfattning : Although gas and liquid chromatography have emerged as dominant separation techniques in environmental analytical chemistry, these methods do not allow for the concurrent analysis of chemically diverse groups of persistent organic pollutants (POPs). There are also a small number of compounds which are not easily amenable to either of these traditional separation techniques. LÄS MER

  2. 2. From source to the environment Strategies for identification and determination of hydroxylated polycyclic aromatic hydrocarbons in complex particulate matrices

    Detta är en avhandling från Stockholm : Department of Environmental Science and Analytical Chemistry, Stockholm University

    Författare :Rozanna Avagyan; Stockholms universitet.; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; OH-PAHs; hydroxy-PAHs; particulate matter; PM; airborne particles; combustion particles; wood combustion; suspect screening; non-target screening; high resolution mass spectrometry; HRMS; atmospheric pressure photoionization; APPI; Analytical Chemistry; analytisk kemi;

    Sammanfattning : Adverse health effects have been linked to exposure to particulate matter, and wood combustion is considered as an important source of harmful particulate matter in the urban air and environment. Hydroxylated polycyclic aromatic hydrocarbons are a group of compounds with toxic, endocrine disrupting and carcinogenic properties. LÄS MER

  3. 3. Centralisering och reduktion av medlemsinflytandet i en stor facklig organisation

    Detta är en avhandling från Umeå : Umeå universitet

    Författare :Sten Höglund; Umeå universitet.; [1979]
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Bureaucratisation; centralisation; membership influence; Trade Union; Economic Policy; Government and Organisation;

    Sammanfattning : This dissertation binds together and draws conclusions from a research project concerning conditions surrounding the growth of a bureaucratic element in large (union) organisations. In order to promote a wider knowledge of these conditions, a study was made of the great constitutional reform which the Swedish Confederation of Trade Unions underwent in 1941. LÄS MER