scholarly journals The Vesuvianite Gems of the Val d’Ala (Piedmont, Italy)

Minerals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 535
Author(s):  
Franca Piera Caucia ◽  
Luigi Marinoni ◽  
Maurizio Scacchetti ◽  
Maria Pia Riccardi ◽  
Omar Bartoli
Keyword(s):  
Inductively Coupled Plasma ◽  
Major Elements ◽  
Western Alps ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Gran Paradiso ◽  
Dark Green ◽  
Ree Patterns

In Val d’Ala (Western Alps in Piedmont, Italy), the most interesting rocks for mineralogical research are represented by rodingite (rich in mineralized veins and fractures) associated with serpentinite in the eclogitized oceanic crust of Piedmont Zone, south of Gran Paradiso Massif. Among the vein-filling minerals, vesuvianite is well appreciated for its potential as gem-quality materials, even though it has never been characterized in detail. This study provides a gemological characterization of eleven vesuvianite crystals from different localities of the Val d’Ala. The refractive index (1.717–1.708) and density (1.705–1.709) values of our vesuvianite are in the range of those in the literature. Scanning electron microscopy with energy-dispersive spectroscopy (SEM/EDS) and laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) established that the samples are pretty compositionally homogeneous in terms of major elements, while trace and rare earth elements (REE) contents are more variable. All REE patterns are characterized by pronounced positive Eu anomalies. The variations in color (from olive green to dark green with chocolate (reddish-brown color shades and polychrome bands) are due to the relevant presence of Fe and, to a lesser extent, Ti and Cr. The X-ray powder diffraction (XRPD) analyses and SEM/EDS quantitative study indicate that the other phases associated with vesuvianite are represented by diopside, garnet, clinochlore.

Geochemical Characterization of Lapita Pottery Via Inductively Coupled Plasma-mass Spectrometry (ICP-MS)

Archaeometry ◽  
2004 ◽  
Vol 46 (1) ◽  
pp. 35-46 ◽  
Author(s):  
D. J. Kennett ◽  
A. J. Anderson ◽  
M. J. Cruz ◽  
G. R. Clark ◽  
G. R. Summerhayes
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Geochemical Characterization ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

Detection of microplastics using inductively coupled plasma-mass spectrometry (ICP-MS) operated in single-event mode

2020 ◽  
Vol 35 (3) ◽  
pp. 455-460 ◽  
Author(s):  
Eduardo Bolea-Fernandez ◽  
Ana Rua-Ibarz ◽  
Milica Velimirovic ◽  
Kristof Tirez ◽  
Frank Vanhaecke
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Single Event ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
First Time

The occurrence of microplastics (MPs) in the environment is a matter of increasing concern. In this work, it has been shown for the first time that ICP-MS operated in single-event mode can be used for the characterization of MPs relying on their C content.

Joint forces of direct, single particle, CE– and HPLC–inductively coupled plasma mass spectrometry techniques for the examination of gold nanoparticle accumulation, distribution and changes inside human cells

Metallomics ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 408-415 ◽  
Author(s):  
Joanna Kruszewska ◽  
Dominika Kulpińska ◽  
Ilona Grabowska-Jadach ◽  
Magdalena Matczuk
Keyword(s):  
Mass Spectrometry ◽  
Gold Nanoparticle ◽  
Single Particle ◽  
Inductively Coupled Plasma ◽  
Human Cells ◽  
Inductively Coupled ◽  
Joint Forces ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

ICP-MS-based platform for the characterization of medicinally attractive nanomaterials processing inside human cells.

Lithium and trace-element concentrations in trioctahedral micas from granites of different geochemical types measured via laser ablation ICP-MS

2017 ◽  
Vol 81 (1) ◽  
pp. 15-33 ◽  
Author(s):  
Karel Breiter ◽  
Michaela Vaňková ◽  
Michaela Vašinová Galiová ◽  
Zuzana Korbelová ◽  
Viktor Kanický
Keyword(s):  
Laser Ablation ◽  
Inductively Coupled Plasma ◽  
Rare Metal ◽  
Major Elements ◽  
Massif Central ◽  
Inductively Coupled ◽  
Exchange Vector ◽  
Icp Ms ◽  
Parent Rocks ◽  
Plasma Mass Spectrometry

AbstractThe compositions of trioctahedral micas from 51 samples of granitoids with different geochemical affiliations and grades of differentiation from the Bohemian Massif, Central Europe, were analysed using electron microprobe (major elements) and laser ablation inductively coupled plasma mass spectrometry (Li, Sc, Ga, Ge, Nb, In, Sn, Cs, Ta, W, Tl). The micas form a continuous evolutionary series from phlogopite to zinnwaldite. The phlogopites and biotites from the I-type rocks are characterized by 5.5–5.7 Si, 2.4–2.6 Al, <0.1 Li atoms per formula unit [apfu] and Mg/(Mg + Fe) = 0.4–0.8. The biotites from the S-type granites usually contain 5.3–5.7 Si, 3.2–3.6 Al, 0.1–0.3 Li apfu and Mg/(Mg + Fe) = 0.15–0.4. The annites and zinnwaldites from the rare-metal granites contain 5.7–6.8 Si, 3.2–3.8 Al, 0.6–2.6 Li apfu and Mg/(Mg + Fe) < 0.1. The concentrations of F, Rb, Cs and Tl increase from the phlogopites and biotites to zinnwaldites: F 0.1 → 8 wt.%, Rb2O 0.05 → 1.7 wt.%, Tl 2 → 50 ppm and Cs 40 → 2000 ppm. The concentrations of Sn, Nb, Ta and W in phlogopites and biotites from the I- and S-type granitoids generally correlate with those of the parent rocks and reach values of (in ppm) 20–100 Sn, 20–250 Nb, 1–20 Ta and <5 W. The highest concentrations were found in the Li-annites in the relatively early facies of rare-metal granites (in ppm): 250–600 Sn, 400–600 Nb, 60–120 Ta and 50– 120 W. The zinnwaldites in the late rare-metal granites facies are impoverished in these elements, which is explained by contemporaneous crystallization of cassiterite and columbite. Lithium enters the crystal lattice of trioctahedral micas via the exchange vector Li3□Si3Fe–6Al–1up to concentrations of ∼2.5 wt.% Li2O (1.5 apfu Li). At higher Li concentrations, Li is incorporated through the exchange vector Li3Si1□–1Fe–2Al–1.

Towards a revision of 234U and 230Th decay constants

2020 ◽  
Author(s):  
Inga Kristina Kerber ◽  
Sophie Warken ◽  
Axel Gerdes ◽  
Norbert Frank
Keyword(s):  
Inductively Coupled Plasma ◽  
Secular Equilibrium ◽  
Decay Constants ◽  
Inductively Coupled ◽  
Accuracy And Precision ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Selection Of

&lt;p&gt;The quality of uranium-series ages depends on the accuracy and precision at which the decay constants of 234U, 230Th and 238U are determined. Here, we present intermediate results for a revision of the decay constants of 234U and 230Th. Therefore, we examined a selection of different materials in secular equilibrium using isotope dilution multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). New approaches of our study in particular concern the characterization of routines for measuring all isotopes on Faraday cups, i. e. low abundance isotopes on cups with 10^13 Ohm amplifiers, and a different selection of materials in comparison to previous studies.&amp;#160; &amp;#955;_234 could be determined so far at a precision of 24 &amp;#949; and agrees with the latest literature value of Cheng et al. (2013) within its error margins.&lt;/p&gt;

scholarly journals A calibration strategy for LA-ICP-MS using isotope dilution for solid reference materials

2016 ◽  
Vol 31 (6) ◽  
pp. 1198-1205 ◽  
Author(s):  
J. P. Thieleke ◽  
C. Vogt
Keyword(s):  
Reference Materials ◽  
Isotope Dilution ◽  
Biological Samples ◽  
Inductively Coupled Plasma ◽  
Isotope Dilution Method ◽  
Dilution Method ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

An isotope dilution method for the quantitative analysis of trace elements in biological samples and for the characterization of reference materials for the analysis of biological samples by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-ID-MS) has been tested.

scholarly journals Metal Content and Stable Isotope Determination in Some Commercial Beers from Romanian Markets

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Cezara Voica ◽  
Dana-Alina Magdas ◽  
Ioana Feher
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Metal Content ◽  
Isotope Ratio Mass Spectrometry ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Trace Metal Content ◽  
Brewing Process ◽  
Plasma Mass Spectrometry

Characterization of beer samples is of interest because their compositions affect the taste and stability of beer and, also, consumer health. In this work, the characterizations of 20 Romanian beers were performed by mean of Inductively Coupled Plasma Mass Spectrometry (ICP-MS) and Isotope Ratio Mass Spectrometry (IRMS) in order to trace heavy metals and isotopic content of them. Major, minor, and trace metals are important in beer fermentation since they supply the appropriate environment for yeast growth and influence yeast metabolism. Beside this, the presence of the C4plants in the brewing process was followed. Our study has shown that the analyzed beers indicated the presence of different plant types used in brewing: C3, C3-C4mixtures, and also C4, depending on producers. Also the trace metal content of each sample is presented and discussed in this study. A comparison of the beers quality manufactured by the same producer but bottled in different type of packaging like glass, dose, or PET was made; our results show that no compositional differences among the same beer type exist.

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