elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Elucidating aggregate microstructure with NanoSIMS and digital image processing

Steffens, Markus and Rogge, Derek and Hoeschen, Carmen and Müller, Carsten W. (2015) Elucidating aggregate microstructure with NanoSIMS and digital image processing. 5th International Symposium on Soil Organic Matter, 20-24 Sept 2015, Göttingen, Germany.

Full text not available from this repository.

Abstract

Soil aggregation is a key factor for a number of biogeochemical processes (e.g. soil organic matter stabilization and nutrient and pollutant sorption) in soils. Although there is a large number of studies on the factors controlling such soil processes, it is still challenging to study these processes in-situ. However it can be assumed that the spatial arrangement of organic and mineral soil constituents in soil aggregates and thus the aggregate structure determine the processes happening at the aggregate scale. We used the nano-scale secondary ion mass spectrometry (NanoSIMS) technology to study a cross section of a single large aggregate from the top-soil of an agricultural cropland with a regular grid of 45 measurements (each with a size of 30x30 µm). Using Cs+ as primary ion, the negatively charged ions 12C-, 12C14N-, 12C15N-, 27Al16O-, 56Fe16O- and 28Si- were collected with a lateral resolution of up to 100 nm. We applied pre-processing algorithms and unsupervised classifications to separate and identify organic and inorganic compartments in the NanoSIMS measurements. Our approach enabled us to explore the elemental and isotopic composition of organic and mineral particles at a hitherto unresolved lateral resolution for a complete soil aggregate and spatially explicitly map and quantify the different compartments.

Item URL in elib:https://elib.dlr.de/102148/
Document Type:Conference or Workshop Item (Poster)
Title:Elucidating aggregate microstructure with NanoSIMS and digital image processing
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Steffens, MarkusLehrstuhl für Bodenkunde TU MünchenUNSPECIFIED
Rogge, Derekderek.rogge (at) dlr.deUNSPECIFIED
Hoeschen, CarmenLehrstuhl für Bodenkunde TU MünchenUNSPECIFIED
Müller, Carsten W.Lehrstuhl für Bodenkunde TU MünchenUNSPECIFIED
Date:20 September 2015
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Soil aggregation, Soil organic matter, NanoSIMS
Event Title:5th International Symposium on Soil Organic Matter
Event Location:Göttingen, Germany
Event Type:international Conference
Event Dates:20-24 Sept 2015
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben Fernerkundung der Landoberfläche (old)
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Land Surface
Deposited By: Rogge, Derek
Deposited On:15 Jan 2016 11:58
Last Modified:10 May 2016 23:42

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.