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Home    Κινητική διερεύνηση ετερογενούς αλληλεπίδρασης αερίου HCl με επιφάνειες ερημικής σκόνης και πιθανές επιπτώσεις της στη διαλυτότητα των μετάλλων  

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Identifier 000407906
Title Κινητική διερεύνηση ετερογενούς αλληλεπίδρασης αερίου HCl με επιφάνειες ερημικής σκόνης και πιθανές επιπτώσεις της στη διαλυτότητα των μετάλλων
Alternative Title Kinetic investigation of gaseous HCl heterogeneous interaction with surfaces of desert dust and potential impact on metals solubility
Author Φουτούλη, Ζωή Π.
Thesis advisor Μιχαλόπουλος, Νικόλαος
Reviewer Κανακίδου, Μαρία
Περγαντής, Σταύρος
Abstract In the present MSc dissertation, the heterogeneous interaction of gaseous HCl with Saudi Arabia dust surfaces, was studied. The title interaction might plays a key-role in the atmosphere, as well as in multiple environmental processes, due to that gaseous HCl adsorption on particles might be both an important sink that determines its atmospheric abundance and an indirect factor, via particles precipitation, that enhances eutrophication. Experiments carried out using a continuous flow system equipped with a Knudsen reactor ensuring very low pressure conditions (Very Low Pressure Reactor, VLPR) and a quadrupole mass spectrometer, QMS, used to analyse the modulated effusive molecular beam that exits the reactor. Experiments performed in temperature range 253 – 296 Κ, simulating Marine Boundary Layer (MBL) and the lower atmosphere’s temperatures. Under those conditions, gaseous HCl affinity with dust surface was studied via initial uptake coefficient (γ0) determination, as well as HCl adsorption probability on the surface available sites via measuring the number of molecules that are attached on the surface, Ns (surface coverage, θ = Νs/Nmax) and the related isotherms. Both γ0 and Ns are of great importance, since they provide with information about the adsorption mechanism and can be used to investigate the impact on dust constituents’ solubility in the ocean. Therefore, they are critically related with one of the most severe threads for the oceanic environment and the sea waters that is eutrophication.
Language Greek
Subject Adsorption of Gaseous HCl
Initial Uptake Coefficient, γ0
Knudsen Reactor
Saudi Arabia Dust
Αντιδραστήρας Knudsen
Προσρόφηση Αερίου HCl
Σκόνη Σαουδικής Αραβίας
Συντελεστής Αρχικής Κατακράτησης, γ0
Issue date 2017-03-17
Collection   School/Department--School of Sciences and Engineering--Department of Chemistry--Post-graduate theses
  Type of Work--Post-graduate theses
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