Insights into the selection of 2D LA-ICP-MS (multi)elemental mapping conditions

2019 ◽  
Vol 34 (9) ◽  
pp. 1919-1931 ◽  
Author(s):  
Johannes T. van Elteren ◽  
Vid S. Šelih ◽  
Martin Šala
Keyword(s):  
Elemental Mapping ◽  
Icp Ms ◽  
Elemental Maps ◽  
Selection Of

Guidelines how to generate good 2D LA-ICP-MS (multi)elemental maps.

Elemental mapping of biological samples by the combined use of LIBS and LA-ICP-MS

2016 ◽  
Vol 31 (1) ◽  
pp. 252-258 ◽  
Author(s):  
Maximilian Bonta ◽  
Jhanis J. Gonzalez ◽  
C. Derrick Quarles ◽  
Richard E. Russo ◽  
Balazs Hegedus ◽  
...  
Keyword(s):  
Trace Elements ◽  
Biological Samples ◽  
Elemental Mapping ◽  
Icp Ms ◽  
Combined Use ◽  
Bio Imaging ◽  
Simultaneous Use

Feasibility of the simultaneous use of LIBS and LA-ICP-MS (tandem LA/LIBS) for bio-imaging of bulk and trace elements is demonstrated.

scholarly journals Laser ablation ICP-MS of size-segregated atmospheric particles collected with a MOUDI cascade impactor: a proof of concept

2017 ◽  
Vol 10 (5) ◽  
pp. 1823-1830 ◽  
Author(s):  
Marin S. Robinson ◽  
Irena Grgić ◽  
Vid S. Šelih ◽  
Martin Šala ◽  
Marsha Bitsui ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Submicron Particles ◽  
Good Precision ◽  
The Novel ◽  
Proof Of Concept ◽  
Image Mapping ◽  
Icp Ms ◽  
Elemental Image ◽  
Elemental Maps ◽  
Good Agreement

Abstract. A widely used instrument for collecting size-segregated particles is the micro-orifice uniform deposit impactor (MOUDI). In this work, a 10-stage MOUDI (cut-point diameter of 10 µm to 56 nm) was used to collect samples in Ljubljana, Slovenia, and Martinska, Croatia. Filters, collected with and without rotation, were cut in half and analyzed for nine elements (As, Cu, Fe, Ni, Mn, Pb, Sb, V, Zn) using laser ablation ICP-MS. Elemental image maps (created with ImageJ) were converted to concentrations using NIST SRM 2783. Statistical analysis of the elemental maps indicated that for submicron particles (stages 6–10), ablating 10 % of the filter (0.5 cm2, 20 min ablation time) was sufficient to give values in good agreement (±10 %) to analysis of larger parts of the filter and with good precision (RSE < 1 %). Excellent sensitivity was also observed (e.g., 20 ± 0.2 pg m−3 V). The novel use of LA-ICP-MS, together with image mapping, provided a fast and sensitive method for elemental analysis of size-segregated MOUDI filters, particularly for submicron particles.

scholarly journals Improved spatial resolution of elemental maps through inversion of LA-ICP-MS data

2017 ◽  
Vol 467 ◽  
pp. 30-41 ◽  
Author(s):  
Matthew Fox ◽  
Alka Tripathy-Lang ◽  
David L. Shuster
Keyword(s):  
Spatial Resolution ◽  
Icp Ms ◽  
Elemental Maps

scholarly journals Magneto-Liposomes as MRI Contrast Agents: A Systematic Study of Different Liposomal Formulations

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 889 ◽  
Author(s):  
Nina Kostevšek ◽  
Calvin C. L. Cheung ◽  
Igor Serša ◽  
Mateja Erdani Kreft ◽  
Ilaria Monaco ◽  
...  
Keyword(s):  
Contrast Agents ◽  
Lipid Bilayer ◽  
Mri Contrast Agents ◽  
Mri Contrast ◽  
Liposomal Formulations ◽  
Icp Ms ◽  
Magnetic Resonance Imaging Mri ◽  
Cancerous Cells ◽  
Selection Of

The majority of the clinically approved iron oxide nanoparticles (IO NPs) used as contrast agents for magnetic resonance imaging (MRI) have been withdrawn from the market either due to safety concerns or lack of profits. To address this challenge, liposomes have been used to prepare IO-based T2 contrast agents. We studied the influence of different phospholipids on the relaxivity (r2) values of magneto-liposomes (MLs) containing magnetic NPs in the bilayer, where a strong correlation between the bilayer fluidity and r2 is clearly shown. Embedding 5-nm IO NPs in the lipid bilayer leads to a significant improvement in their relaxivity, where r2 values range from 153 ± 5 s−1 mM−1 for DPPC/cholesterol/DSPE-PEG (96/50/4) up to 673 ± 12 s−1 mM−1 for DOPC/DSPE-PEG (96/4), compared to “free” IO NPs with an r2 value of 16 s−1 mM−1, measured at 9.4 T MRI scanner. In vitro MRI measurements, together with the ICP-MS analysis, revealed MLs as highly selective contrast agents that were preferentially taken up by cancerous T24 cells, which led to an improvement in the contrast and an easier distinction between the healthy and the cancerous cells. A careful selection of the lipid bilayer to prepare MLs could offer efficient MRI contrast agents, even at very low IO NP concentrations.

Glass Fiber Stress-Corrosion Setup: Selection of a Polymeric Coating Material for the Pushing Rod

2020 ◽  
Author(s):  
Andrejs Krauklis
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
Glass Fiber ◽  
Stress Corrosion ◽  
Polymeric Coating ◽  
Fiber Stress ◽  
Coating Materials ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Selection Of

Various polymers were tested for leaching of ions via High Resolution Induced Coupled Plasma Mass Spectrometry (HR-ICP-MS) in order to determine which coating materials for the pushing rod are compatible with the glass fiber stress-corrosion setup. The biggest concern is the leaching of Si ions, and is compared among various commercially available polymers - four different polyurethanes, polyvinylchloride, poly(methylmethacrylate) and silicone. Significant amounts of other elements leached were also noted and reported.

INFLUENCE OF ORGANIC MATTER ON Re-Os DATING OF SULFIDES: INSIGHTS FROM THE GIANT JINDING SEDIMENT-HOSTED Zn-Pb DEPOSIT, CHINA

2021 ◽  
Author(s):  
Shiqiang Huang ◽  
Yucai Song ◽  
Limin Zhou ◽  
David L. Leach ◽  
Zhaoshan Chang ◽  
...  
Keyword(s):  
Organic Matter ◽  
Inductively Coupled Plasma ◽  
Elemental Mapping ◽  
Bacterial Reduction ◽  
Inductively Coupled ◽  
Hydrocarbon Reservoir ◽  
Low Concentrations ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Two Stages

Abstract This study evaluates the effect of organic matter impurities on pyrite Re-Os dating, using the giant Jinding sediment-hosted Zn-Pb deposit in China as an example. The Jinding deposit is hosted in a Paleocene evaporite dome that was a hydrocarbon reservoir before mineralization. Pyrite in Jinding formed in two stages: pre-ore (py1) and syn-ore (py2). Two types of py1 are recognized, organic matter-free and organic matter-bearing. The organic matter-free py1 contains homogeneously distributed low concentrations of Re (&lt;2.5 ppb) that yields an isochron age of 51 ± 1 Ma (mean square of weighted deviates [MSWD] = 3.2). This date is interpreted to be the age of py1 formation. The organic matter-bearing py1 contains organic matter inclusions trapped during py1 growth and synchronous with bacterial reduction of sulfate. Elemental mapping with laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) shows that the organic matter inclusions have Re signals 1 to 4 orders of magnitude higher than those of pyrite, revealing that organic matter is the major host for Re. Such pyrite separates contain 37 to 1,145 ppb Re. The Re-Os data of organic matter-bearing py1 yield an isochron age of 72.9 ± 0.5 Ma (MSWD = 0.2). This age is older than the actual py1 formation age of 51 ± 1 Ma but overlaps with previously dated bitumen Re-Os isochron age of 68 ± 5 Ma at Jinding, indicating that organic matter inclusions can significantly influence the Re-Os dates of pyrite and likely other sulfides. This study demonstrates that in order to date sulfides formed in organic-rich environments using the Re-Os method, it is necessary to determine the distribution of Re in samples using detailed petrography and LA-ICP-MS trace element mapping plus spot analysis.

LA-ICP-MS elemental mapping of pyrite: An application to the Palaeoproterozoic atmosphere

2017 ◽  
Vol 297 ◽  
pp. 33-55 ◽  
Author(s):  
Lingli Zhou ◽  
Cora A. McKenna ◽  
Darrel G.F. Long ◽  
Balz S. Kamber
Keyword(s):  
Elemental Mapping ◽  
Icp Ms

ICP MS selection of radiopure materials for the GERDA experiment

2015 ◽  
Author(s):  
M. L. di Vacri ◽  
S. Nisi ◽  
C. Cattadori ◽  
J. Janicsko ◽  
A. Lubashevskiy ◽  
...  
Keyword(s):  
Icp Ms ◽  
Selection Of
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