Copper isotopes in tree rings discriminate sources of pollution

We published first Cu isotope data in pine tree rings and surrounding polluted and unpolluted soils in the Zambian Copperbelt. In highly polluted soil profiles, there is greater Cu isotope fractionation and Cu isotope compositions in tree rings indicate that there was a non-root uptake of Cu uptake by the trees.

Mihaljevič M., Jarošíková A., Ettler V., Vaněk A., Penížek V., Kříbek B., Chrastný V., Sracek O., Trubač J., Svoboda M., Nyambe I. (2018): Copper isotopic record in soils and tree rings near a copper smelter, Copperbelt, Zambia. Science of the Total Environment 621, 9-17. (DOI)

Alice Jarošíková defended her PhD

On Friday February 3, 2018, Alice Jarošíková defended her PhD entitled “Experimental in situ transformation of smelting wastes in soils”. On the photo, where she is second from the left, you find her together with two reviewers Prof. Edgar Hiller (Comenius University, Bratislava) and Prof. Barbora Doušová (Institute of Chemical Technology, Prague) and her supervisor, Prof. Vojtěch Ettler. Congratulations, Alice!

Biologically induced formation of realgar

Check the great paper by Petr Drahota and co-authors about low-temperature formation of As sulphides, which has just been published in GCA! Drahota P., Mikutta C., Falteisek L., Duchoslav V., Klementová M. (2017): Biologically induced formation of realgar deposits in soil. Geochimica et Cosmochimica Acta 218, 237-256. (DOI).

First thallium isotope data from our new Neptune MC ICP MS just published in ES&T

We studied how thallium isotopes can be used for tracing anthropogenic pollution in soils contaminated by emissions from coal-fired power plants. These results are the first published isotope data generated by our brand new MC-ICP-MS lab. Vaněk A., Grosslova Z., Mihaljevič M., Trubač J., Ettler V., Teper L., Cabala J., Rohovec J., Zadorova T., Penizek V., Pavlu L., Holubik O., Nemecek K., Houska J., Drabek O., Ash C. (2016): Isotopic Tracing of Thallium Contamination in Soils Affected by Emissions from Coal-Fired Power Plants. Environmental Science and Technology 50, 9864-9871. (DOI)

Brand new determination of thermodynamic properties of arsenates

In the footsteps of previous research on zýkaite (Majzlan J., Amoako F.Y., Kindlová H., Drahota P. (2015): Thermodynamic properties of zýkaite, a ferric sulfoarsenate. Applied Geochemistry 61, 294-301, DOI) we published in Hydrometallurgy new thermodynamic data for FeAsO4·0.75H2O: Majzlan J., Dachs E., Benisek A., Drahota P. (2016): Thermodynamic properties of FeAsO4·0.75H2O – a more favorable disposable product of low As solubility. Hydrometallurgy 164, 136-140 (DOI).

Mineralogy of smelter- and mining-derived particulates affects contaminant mobility in soils

Mobility of metal(loid)s in soils is strongly affected by their binding to solids. We studied smelter- and mining-derived particulates with high levels of metals and metalloids (As, Sb) and their stability in soils from dry semi-arid and wet subtropical areas in Africa. Ettler V., Johan Z., Kříbek B., Veselovský F., Mihaljevič M., Vaněk A., Penížek V., Majer V., Sracek O., Mapani B., Kamona F., Nyambe I. (2016): Composition and fate of mine- and smelter-derived particles in soils of humid subtropical and hot semi-arid areas. Science of the Total Environment 563-564, 329-339. (DOI)