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Thermo icap qc

Manufactured by Thermo Fisher Scientific
Sourced in Germany, France

The Thermo iCAP Qc is a compact, entry-level Inductively Coupled Plasma Mass Spectrometer (ICP-MS) designed for routine analysis of metals and trace elements in a variety of sample types. It offers high-performance capabilities for quantitative analysis of elements in complex matrices.

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3 protocols using thermo icap qc

1

Multimodal Analysis of Micro-Drilled Samples

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A NWR213 laser ablation system (esi, http://www.nwrlasers.com) was used for both the preparation of the μDD wells and the respective analysis of particles and reference materials. For the LA-ICP-MS analysis, the NWR213 laser was coupled to a quadrupole ICP-MS (Thermo iCAP Qc, Thermo Fisher Scientific). The transfer line was modified to increase the washout time to allow more observations per analysis run. Determination of the depth and dimensions of individual wells was carried out using a DektakXT profilometer (BRUKER, https://www.bruker.com).
Samples were ultrasonicated with an ultrasonic cleaner USC 200 TH (VWR) and vortexed with a Vortex Genie 2 (Scientific Industries, https://www.scientificindustries.com).
Sample loading steps as well as loading of the μDD cavities were performed in a VFT 1525 ultraclean laminar flow hood (WEISS Technik, https://www.weiss-technik.com).
Microwave-assisted sample digestions were performed using an Anton Paar Multiwave 3000 (Anton Paar, https://www.anton-paar.com); liquid sample solutions were analysed using an iCAP 6500 ICP-OES spectrometer (Thermo Fisher Scientific) equipped with a CETAC ASX-520 autosampler (CETAC Technologies, http://www.teledynecetac.com).
A FEI Quanta 250 FEGSEM (https://www.fei.com) was used for the SEM measurements.
(S)TEM imaging was performed with a FEI Tecnai F20 FEG-TEM instrument.
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2

Germanium Nanowires Characterization

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The
Ge NWs were analyzed
using a FEI Inspect F50 scanning electron microscope. The Ge NWs were
deposited on lacey carbon copper grids by dry transfer using shear
force for TEM characterization (Plano). In this study, a FEI TECNAI
F20 operated at 200 kV and equipped with high angle annular dark field
(HAADF) STEM and EDX detectors was used. The limited accuracy of the
EDX analysis can lead to a potential deviation by ±0.5 at. %
of the values stated here. The elemental maps were recorded and quantified
using the AMETEK TEAM package. The images were recorded and treated
using Digital Micrograph software. LA-ICP-MS measurements were performed
using a commercially available laser ablation system (New Wave 213,
ESI, Fremont, CA, USA) with a frequency-quintupled 213 nm Nd:YAG laser
in combination with a quadrupole ICP-MS instrumentation (Thermo iCAP
Qc, ThermoFisher Scientific, Bremen, Germany). For quantification, 69Ga was compared with the 76Ge signal while standards
of metal ratios between 1:99 and 5:95 Ga/Ge were prepared using the
metal halogenides dissolved in aqueous potassium hydroxide.
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3

MALDI-TOF/TOF Mass Spectrometry Protocol

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Chemicals and reagents were purchased from Sigma-Aldrich Chemical (Saint-Quentin-Fallavier, France), unless otherwise stated. Ultrapure water corresponds to PURELAB Option-Q from Veolia Water (Antony, France). The Ultraflex III matrix-assisted laser desorption/ionization time-of-flight/time-of-flight (MALDI-TOF/TOF) instrument and Flex Analysis software were from Bruker Daltonik GmbH (Bremen, Germany). Metal concentrations in diluted samples were determined using inductively coupled plasma mass spectrometry (ICP-MS; THERMO ICAP Qc, Thermo Scientific, Courtaboeuf Cedex, France).
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