Mass spectrometric analysis in planetary science: Investigation of the surface and the atmosphere

Würz, Peter; Abplanalp, D.; Tulej, Marek; Iakovleva, M.; Fernandes, V. A.; Chumikov, A. E.; Managadze, G. G.

doi:10.1134/s003809461206007x

Cited by 29 publications

(26 citation statements)

References 38 publications

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“…To overcome these inherent limitations of the SIMS technique and to determine the actual incorporation of the suppressing complex into the final copper deposit, we made use of a truly quantitative, sensitive (10 ppb element/isotope concentration in sample material, atomic fraction) LIMS depth profiling instrument that can achieve even sub-nanometer vertical resolution [33][34][35][36][37][38]. The capabilities of this technique on the analysis of copper electrodeposits prepared with the Imep-SPS additive package were recently proven for multilayered samples that were also prepared by an oscillatory Cu electrodeposition [41].…”

Section: Resultsmentioning

confidence: 99%

“…For that purpose we conducted complementary Laser Ionization/Ablation Mass Spectrometry (LIMS) [33][34][35][36][37][38], Secondary Ion Mass Spectrometry (SIMS) and Focused Ion Beam (FIB) investigations on Imep-assisted copper electrodeposits and proved its marginal embedment into the copper matrix. Preliminary laser desorption studies performed inside layers of high additive concentration support the validity of our proposed reaction mechanism (Fig.…”

Section: Insert Fig 1 (Single Column)mentioning

confidence: 99%

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Towards Structural Analysis of Polymeric Contaminants in Electrodeposited Cu films

Moreno‐García

Grimaudo

Riedo

et al. 2016

Electrochimica Acta

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ABSTRACT:The incorporation of plating additives into Cu films was studied by means of preferential inclusion and accumulation of contaminants at grain boundaries inside the Cu deposit whereas the Cu grains remain largely contamination-free. A novel LIMS desorption approach is presented which allows for a molecular structure analysis of the polymeric additive ensembles preferentially embedded at grain boundaries of the Cu deposit. Our LIMS analysis confirms a recently discussed mechanism on the action of these hybrid additives which relies on their interaction with thiolate-stabilized Cu(I) intermediates.

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Section: Resultsmentioning

confidence: 99%

Section: Insert Fig 1 (Single Column)mentioning

confidence: 99%

Towards Structural Analysis of Polymeric Contaminants in Electrodeposited Cu films

Moreno‐García

Grimaudo

Riedo

et al. 2016

Electrochimica Acta

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“…Fig. shows the LMS v2, prototype instrument designed for a rover . More details on this system can be found in previous publications …”

Section: Methodsmentioning

confidence: 99%

“…The micro ‐chip laser is on the left, with the laser optics on the right in the foreground of the top board. The scale of the shown rule in front of the prototype is in [cm] …”

Section: Methodsmentioning

confidence: 99%

“…The technical capabilities reported by various research groups showed that the miniature LIMS instruments can support highly sensitive measurements of elements (metals and non metals, such as C, Si, S, B and P) at abundances down to the ppm level . Altogether, a miniature LIMS instrument with small size, low weight and power consumption is well suited for sensitive and accurate in situ analysis on the chemical compositions of planetary surfaces in space research . To date, several miniature LIMS systems, e.g.…”

Section: Introductionmentioning

confidence: 99%

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Performance evaluation of a miniature laser ablation time‐of‐flight mass spectrometer designed for in situ investigations in planetary space research

Riedo,

Bieler,

Neuland

et al. 2012

J. Mass. Spectrom.

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121

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Key performance features of a miniature laser ablation time-of-flight mass spectrometer designed for in situ investigations of the chemical composition of planetary surfaces are presented. This mass spectrometer is well suited for elemental and isotopic analysis of raw solid materials with high sensitivity and high spatial resolution. In this study, ultraviolet laser radiation with irradiances suitable for ablation (< 1 GW/cm(2)) is used to achieve stable ion formation and low sample consumption. In comparison to our previous laser ablation studies at infrared wavelengths, several improvements to the experimental setup have been made, which allow accurate control over the experimental conditions and good reproducibility of measurements. Current performance evaluations indicate significant improvements to several instrumental figures of merit. Calibration of the mass scale is performed within a mass accuracy (Δm/m) in the range of 100 ppm, and a typical mass resolution (m/Δm) ~600 is achieved at the lead mass peaks. At lower laser irradiances, the mass resolution is better, about (m/Δm) ~900 for lead, and limited by the laser pulse duration of 3 ns. The effective dynamic range of the instrument was enhanced from about 6 decades determined in previous study up to more than 8 decades at present. Current studies show high sensitivity in detection of both metallic and non-metallic elements. Their abundance down to tens of ppb can be measured together with their isotopic patterns. Due to strict control of the experimental parameters, e.g. laser characteristics, ion-optical parameters and sample position, by computer control, measurements can be performed with high reproducibility.

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Chemical identification of microfossils from the 1.88‐Ga Gunflint chert: Towards empirical biosignatures using laser ablation ionization mass spectrometer

Lukmanov

Tulej

Ligterink

et al. 2021

Journal of Chemometrics

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In this contribution, we investigated the chemical composition of Precambrian microfossils from the Gunflint chert (1.88 Ga) using a miniature laser ablation ionization mass spectrometer (LIMS) developed for in situ space applications. Spatially resolved mass spectrometric imaging (MSI) and depth profiling resulted in the acquisition of 68,500 mass spectra. Using single mass unit spectral decomposition and multivariate data analysis techniques, we identified the location of aggregations of microfossils and surrounding inorganic host mineral. Our results show that microfossils have unique chemical compositions that can be distinguished from the inorganic chert with high fidelity. Chemical depth profiling results also show that with LIMS microprobe data, it is possible to identify chemical differences between individual microfossils, thereby providing new insights about nature of early life. Analysis of LIMS spectra acquired from the individual microfossils reveals complex mineralization, which can reflect the metabolic diversity of the Gunflint microbiome. An intensity-based machine learning model trained on LIMS Gunflint data might be applied for the future investigations of putative microfossils from silicified matrices, where morphological integrity of investigated structures is lost, and potentially in the investigation of rocks acquired from the Martian surface.

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Mass spectrometric analysis in planetary science: Investigation of the surface and the atmosphere

Cited by 29 publications

References 38 publications

Towards Structural Analysis of Polymeric Contaminants in Electrodeposited Cu films

Towards Structural Analysis of Polymeric Contaminants in Electrodeposited Cu films

Performance evaluation of a miniature laser ablation time‐of‐flight mass spectrometer designed for in situ investigations in planetary space research

Chemical identification of microfossils from the 1.88‐Ga Gunflint chert: Towards empirical biosignatures using laser ablation ionization mass spectrometer

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