Petrochemical features of granite-gneisses of the Nikolaishor massif (Subpolar Urals)

Author(s):  
Yu.V. Denisova ◽  

The Nikolaishor massif is located within the heavily eroded gneisses of the Nyarta metamor¬phic complex and is an au-tochthonous massif composed of plagiogranites and kalispartic granites. The conducted petrochemical study of the least modified variety of granites of this massif made it possible to identify the petrochemical features of the studied rock, as well as to determine the geodynamic conditions for the formation of the Nikolaishor massif. According to the results of the silicate analysis, granites are high-alumina leucogranites of the potassium-sodium type. The initial substrate for the stud¬ied rocks was presumably magmatic protolith. Based on the ICP-MS analysis data, various in-dicator ratios were calculated for the granites. The obtained indicators allowed us to conclude that the rocks under consideration were formed from melts enriched mainly with light TR, which belong to a deep crustal type source. Comprehensive study of multivariate discrimi¬nant analysis indicators for the main elements of S. Agrawal, as well as diagrams of J.A. Pearce, D. Papu, N.B. Harris, showed that the rocks of the Nikolaishor massif are syncollisional granites formed in the Late Orogenic time.

Data in Brief ◽  
2020 ◽  
Vol 32 ◽  
pp. 106092
Author(s):  
Takashi Yuguchi ◽  
Kozue Ishibashi ◽  
Shuhei Sakata ◽  
Tatsunori Yokoyama ◽  
Daichi Itoh ◽  
...  

2020 ◽  
Vol 70 (12) ◽  
pp. 4594-4600

The purpose of this study was to characterize some types of biomass wastes resulted from different activities such as: agriculture, forestry and food industry using thermogravimetric and ICP-MS analyses. Also, it was optimized an ICP-MS method for the determination of As, Cd and Pb from biomass ash samples. The ICP-MS analysis revealed that the highest concentration of metals (As, Cd, Pb) was recorded in the wood waste ash sample, also the thermogravimetric analysis indicated that the highest amount of ash was obtained for the same sample (26.82%). The biomass wastes mentioned in this study are alternative recyclable materials, reusable as pellets and briquettes. Keywords: ash, biomass, ICP-MS, minor elements, TG


Author(s):  
Blandine Gourcerol ◽  
◽  
Daniel J. Kontak ◽  
Phillips C. Thurston ◽  
Joseph A. Petrus
Keyword(s):  

2020 ◽  
Vol 1099 ◽  
pp. 16-25 ◽  
Author(s):  
Daniel Rosenkranz ◽  
Fabian L. Kriegel ◽  
Emmanouil Mavrakis ◽  
Spiros A. Pergantis ◽  
Philipp Reichardt ◽  
...  

Chemosensors ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 77
Author(s):  
Davide Spanu ◽  
Gilberto Binda ◽  
Marcello Marelli ◽  
Laura Rampazzi ◽  
Sandro Recchia ◽  
...  

A laser ablation–inductively coupled plasma–mass spectrometry (LA–ICP–MS) based method is proposed for the quantitative determination of the spatial distribution of metal nanoparticles (NPs) supported on planar substrates. The surface is sampled using tailored ablation patterns and the data are used to define three-dimensional functions describing the spatial distribution of NPs. The volume integrals of such interpolated surfaces are calibrated to obtain the mass distribution of Ag NPs by correlation with the total mass of metal as determined by metal extraction and ICP–MS analysis. Once this mass calibration is carried out on a sacrificial sample, quantifications can be performed over multiple samples by a simple micro-destructive LA–ICP–MS analysis without requiring the extraction/dissolution of metal NPs. The proposed approach is here tested using a model sample consisting of a low-density polyethylene (LDPE) disk decorated with silver NPs, achieving high spatial resolution over cm2-sized samples and very high sensitivity. The developed method is accordingly a useful analytical tool for applications requiring both the total mass and the spatial distribution of metal NPs to be determined without damaging the sample surface (e.g., composite functional materials and NPs, decorated catalysts or electrodic materials).


2010 ◽  
Vol 398 (1) ◽  
pp. 415-424 ◽  
Author(s):  
T. Stehrer ◽  
J. Heitz ◽  
J. D. Pedarnig ◽  
N. Huber ◽  
B. Aeschlimann ◽  
...  

2014 ◽  
Vol 29 (5) ◽  
pp. 903 ◽  
Author(s):  
Jitka Míková ◽  
Jan Košler ◽  
Michael Wiedenbeck

2010 ◽  
Vol 397 (1) ◽  
pp. 401-406 ◽  
Author(s):  
Gunda Koellensperger ◽  
Stephan Hann
Keyword(s):  

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