DC pole | Wartość | Język |
dc.contributor.author | Jabłońska, Mariola | - |
dc.contributor.author | Janeczek, Janusz | - |
dc.contributor.author | Smieja-Król, Beata | - |
dc.date.accessioned | 2021-02-08T11:15:12Z | - |
dc.date.available | 2021-02-08T11:15:12Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | "Minerals" Vol. 11, iss. 2 (2021), art. no. 125 | pl_PL |
dc.identifier.issn | 2075-163X | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/18889 | - |
dc.description.abstract | For the first time, it is shown that inhaled ambient air-dust particles settled in the human
lower respiratory tract induce lung calcification. Chemical and mineral compositions of pulmonary
calcium precipitates in the lung right lower-lobe (RLL) tissues of 12 individuals who lived in the
Upper Silesia conurbation in Poland and who had died from causes not related to a lung disorder
were determined by transmission and scanning electron microscopy. Whereas calcium salts in
lungs are usually reported as phosphates, calcium salts precipitated in the studied RLL tissue were
almost exclusively carbonates, specifically Mg-calcite and calcite. These constituted 37% of the
1652 mineral particles examined. Mg-calcite predominated in the submicrometer size range, with a
MgCO3 content up to 50 mol %. Magnesium plays a significant role in lung mineralization, a fact
so far overlooked. The calcium phosphate (hydroxyapatite) content in the studied RLL tissue was
negligible. The predominance of carbonates is explained by the increased CO2 fugacity in the RLL.
Carbonates enveloped inhaled mineral-dust particles, including uranium-bearing oxides, quartz,
aluminosilicates, and metal sulfides. Three possible pathways for the carbonates precipitation on
the dust particles are postulated: (1) precipitation of amorphous calcium carbonate (ACC), followed
by its transformation to calcite; (2) precipitation of Mg-ACC, followed by its transformation to
Mg-calcite; (3) precipitation of Mg-free ACC, causing a localized relative enrichment in Mg ions and
subsequent heterogeneous nucleation and crystal growth of Mg-calcite. The actual number of inhaled
dust particles may be significantly greater than was observed because of the masking effect of the
carbonate coatings. There is no simple correlation between smoking habit and lung calcification. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/pl/ | * |
dc.subject | air pollution | pl_PL |
dc.subject | lung mineralization | pl_PL |
dc.subject | magnesian calcite | pl_PL |
dc.subject | calcite | pl_PL |
dc.subject | amorphous calcium carbonate | pl_PL |
dc.title | The impact of ambient atmospheric mineral-dust particles on the calcification of lungs | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.identifier.doi | 10.3390/min11020125 | - |
Pojawia się w kolekcji: | Artykuły (WNP)
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