Refine
Year of publication
- 2021 (102) (remove)
Document Type
- Article (102) (remove)
Keywords
- Principal component analysis (2)
- capacitive field-effect sensor (2)
- constructive alignment (2)
- examination (2)
- harmonic radar (2)
- long-term retention (2)
- multimodal (2)
- practical learning (2)
- Aircraft sizing (1)
- AlterG (1)
- Authenticity (1)
- Bacillus sp (1)
- Bemessung (1)
- Biosolubilization (1)
- Bloom’s Taxonomy (1)
- Bone quality and biomechanics (1)
- Bootstrap (1)
- CFD (1)
- Capacitive field-effect sensor (1)
- CellDrum (1)
Institute
- Fachbereich Medizintechnik und Technomathematik (38)
- IfB - Institut für Bioengineering (27)
- INB - Institut für Nano- und Biotechnologien (15)
- Fachbereich Wirtschaftswissenschaften (13)
- Fachbereich Chemie und Biotechnologie (11)
- Fachbereich Luft- und Raumfahrttechnik (11)
- Fachbereich Energietechnik (7)
- Fachbereich Bauingenieurwesen (6)
- Fachbereich Elektrotechnik und Informationstechnik (5)
- Fachbereich Maschinenbau und Mechatronik (4)
- Solar-Institut Jülich (4)
- ECSM European Center for Sustainable Mobility (2)
- Fachbereich Architektur (2)
- IBB - Institut für Baustoffe und Baukonstruktionen (2)
- IMP - Institut für Mikrowellen- und Plasmatechnik (2)
- MASKOR Institut für Mobile Autonome Systeme und Kognitive Robotik (2)
- Nowum-Energy (2)
- ZHQ - Bereich Hochschuldidaktik und Evaluation (2)
Geochemical characterisation of hypersaline waters is difficult as high concentrations of salts hinder the analysis of constituents at low concentrations, such as trace metals, and the collection of samples for trace metal analysis in natural waters can be easily contaminated. This is particularly the case if samples are collected by non-conventional techniques such as those required for aquatic subglacial environments. In this paper we present the first analysis of a subglacial brine from Taylor Valley, (~ 78°S), Antarctica for the trace metals: Ba, Co, Mo, Rb, Sr, V, and U. Samples were collected englacially using an electrothermal melting probe called the IceMole. This probe uses differential heating of a copper head as well as the probe’s sidewalls and an ice screw at the melting head to move through glacier ice. Detailed blanks, meltwater, and subglacial brine samples were collected to evaluate the impact of the IceMole and the borehole pump, the melting and collection process, filtration, and storage on the geochemistry of the samples collected by this device. Comparisons between melt water profiles through the glacier ice and blank analysis, with published studies on ice geochemistry, suggest the potential for minor contributions of some species Rb, As, Co, Mn, Ni, NH4+, and NO2−+NO3− from the IceMole. The ability to conduct detailed chemical analyses of subglacial fluids collected with melting probes is critical for the future exploration of the hundreds of deep subglacial lakes in Antarctica.