Aerosol processes in the Planetary Boundary Layer: High resolution Aerosol Mass Spectrometry on a Zeppelin NT Airship PDF Download
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Author: Florian Rubach
Publisher: Forschungszentrum Jülich
ISBN: 389336918X
Category :
Languages : en
Pages : 155
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Author: Florian Rubach
Publisher: Forschungszentrum Jülich
ISBN: 389336918X
Category :
Languages : en
Pages : 155
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Author: Jäger, Julia
Publisher: Forschungszentrum Jülich
ISBN: 3893369368
Category :
Languages : en
Pages : 199
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Author: Michał Sypuła
Publisher: Forschungszentrum Jülich
ISBN: 3893369279
Category :
Languages : en
Pages : 229
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Book Description
Recycling of nuclear spent fuel and reduction of its radiotoxicity by separation of long-lived radionuclides would definitely help to close the nuclear fuel cycle ensuring sustainability of the nuclear energy. Partitioning of the main radiotoxicity contributors followed by their conversion into short-lived radioisotopes is known as partitioning and transmutation strategy. To ensure efficient transmutation of the separated elements (minor actinides) the content of lanthanides in the irradiation targets has to be minimised. This objective can be attained by solvent extraction using highly selective ligands that are able to separate these two groups of elements from each other. The objective of this study was to develop a novel process allowing co-separation of minor actinides and lanthanides from a high active acidic feed solution with subsequent actinide recovery using just one cycle, so-called innovative SANEX process. The conditions of each step of the process were optimised to ensure high actinide separation efficiency. Additionally, screening tests of several novel lipophilic and hydrophilic ligands provided by University of Twente were performed. These tests were aiming in better understanding the influence of the extractant structural modifications onto An(III)/Ln(III) selectivity and complexation properties. ...
Author: Ruth Laengner
Publisher: Forschungszentrum Jülich
ISBN: 3893369244
Category :
Languages : en
Pages : 175
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Author: Cristina Asensio Jimenez
Publisher: Forschungszentrum Jülich
ISBN: 389336935X
Category :
Languages : en
Pages : 227
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Author: M. Klinkenberg
Publisher: Forschungszentrum Jülich
ISBN: 3893369201
Category :
Languages : en
Pages : 205
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Author: Konstantinos Kazanas
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Jeffrey Robert Whiteaker
Publisher:
ISBN:
Category : Aerosols
Languages : en
Pages : 644
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Author:
Publisher:
ISBN:
Category : Aerosols
Languages : en
Pages : 108
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Author: Felipe Daniel Lopez-Hilfiker
Publisher:
ISBN:
Category :
Languages : en
Pages : 178
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Book Description
The guiding question to this research is: To what extent and by what mechanisms do biogenic volatile organic compounds contribute to atmospheric aerosol mass? To address this question we need to understand the chemistry that produces condensable vapors which when in the presence of particles may partition onto the aerosol surface depending on their chemical and physical properties. I developed an insitu gas and aerosol sampling system, the FIGAERO (Filter Inlet for Gases and AEROsol) to speciate gas and particle phase organics derived from photochemical reactions with biogenic volatile organic compounds under both field and laboratory conditions. By coupling the FIGAERO to a High-Resolution Time-of-Flight Chemical Ionization Mass Spectrometer (HR-TOF-CIMS) I am able to elucidate chemical pathways by identifying elemental compositions and in some cases functional groups present in the detected molecular ions. The coupling of the FIGAERO to the HR-TOF-CIMS also allows the estimation of effective vapor pressures of the aerosol components and this information can be used to improve vapor pressure models and test associated partitioning theories and parameterizations. The approach also provides hundreds of speciated chemical tracers that can be correlated with traditional environmental and chemical measurements (e.g AMS, NOx, SO2, SMPS, VOC) to help derive sources and sinks and to constrain the mechanisms responsible for the formation and growth of organic aerosol. Measurements obtained across a wide range of conditions and locations allowing connections and contrasts between different chemical systems, providing insights into generally controlling factors of secondary organic aerosol (SOA) and its properties.
