Nickel isotope fractionation during laterite Ni ore smelting and refining: Implications for tracing the sources of Ni in smelter-affected soils
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F16%3A10323238" target="_blank" >RIV/00216208:11310/16:10323238 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.apgeochem.2015.09.005" target="_blank" >http://dx.doi.org/10.1016/j.apgeochem.2015.09.005</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apgeochem.2015.09.005" target="_blank" >10.1016/j.apgeochem.2015.09.005</a>
Alternative languages
Result language
angličtina
Original language name
Nickel isotope fractionation during laterite Ni ore smelting and refining: Implications for tracing the sources of Ni in smelter-affected soils
Original language description
Nickel isotope ratios were measured in ores, fly ash, slags and FeNi samples from two metallurgical plants located in the Goias State, Brazil (Barro Alto, Niquelandia). This allowed investigating the massdependent fractionation of Ni isotopes during the Ni-laterite ore smelting and refining. Feeding material exhibits a large range of delta Ni-60 values (from 0.02 +/- 0.10 parts per thousand to 0.20 +/- 0.05 parts per thousand, n = 7), explained by the diversity of Ni-bearing phases, and the average of delta Ni-60(feeding materials) was found equal to 0.08 +/- 0.08 parts per thousand (2SD, n = 7). Both delta Ni-60 values of fly ash (delta Ni-60 = 0.07 +/- 0.07 parts per thousand, n = 10) and final FeNi produced (0.05 +/- 0.02 parts per thousand, n = 2) were not significantly different from the feeding materials ones. These values are consistent with the very high production yield of the factories. However, smelting slags present the heaviest delta Ni-60 values of all the smelter samples, with delta Ni-60 ranging from 0.11 +/- 0.05 parts per thousand to 0.27 +/- 0.05 parts per thousand (n = 8). Soils were also collected near and far from the Niquelandia metallurgical plant, to evaluate the potential of Ni isotopes for tracing the natural vs anthropogenic Ni in soils. The Ni isotopic composition of the non-impacted topsoils developed on ultramafic rocks ranges from -0.26 +/- 0.09 parts per thousand to -0.04 +/- 0.05 parts per thousand (n = 20). On the contrary, the Ni isotopic composition of the non-ultramafic topsoils, collected close to the plant, exhibit a large variation of delta Ni-60, ranging from -0.19 +/- 0.13 parts per thousand up to 0.10 +/- 0.05 parts per thousand (n = 4). This slight but significant enrichment in heavy isotopes highlights the potential impact of smelting activity in the surrounding area, as well as the potential of Ni isotopes for discerning anthropogenic samples (heavier delta Ni-60 values) from natural ones (lighter delta Ni-60 values).
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DD - Geochemistry
OECD FORD branch
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Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Geochemistry
ISSN
0883-2927
e-ISSN
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Volume of the periodical
64
Issue of the periodical within the volume
JANUARY
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
136-145
UT code for WoS article
000366648200013
EID of the result in the Scopus database
2-s2.0-84945368112