News
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Our new contribution to the Environmental Pollution journal reports effects of microbial reduction of Fe(III) and As(V) minerals at the Mokrsko geochemical anomaly that leads to mobilization of As and induces a mineralogical transition toward realgar formation. This is the first report of macroscopic realgar of biogenic origin! Drahota P., Falteisek L., Redlich A., Rohovec J., Matoušek T., Čepička I. (2013): Microbial effect on the release and attenuation of arsenic in the shallow subsurface of a natural geochemical anomaly. Environmental Pollution 180, 84-91. (doi: 10.1016/j.envpol.2013.05.010) |
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Here, we reported first diel variations in dissolved concentrations of Mo in a stream. This phenomenon has been found in the As-rich stream at Mokrsko (Central Czech Rep.). Dissolved As, Mo, and Sb diel cycles were linked to temperature-dependend adsorption. Drahota P., Nováková B., Matoušek T., Mihaljevič M., Rohovec J., Filippi M. (2013): Diel variation of arsenic, molybdenum and antimony in a stream draining natural As geochemical anomaly. Applied Geochemistry 31, 84-93. (doi: 10.1016/j.apgeochem.2012.12.008) |
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In the December issue of Astrobiology, the "rapid communication" by Petr Vítek et al. reported about Raman spectroscopic identifications of microbial biomarkers in halite crusts from Atacama Desert using portable Raman systems. And we had a cover page! Vítek P., Jehlička J., Edwards H.G.M., Hutchinson I., Ascaso C., Wierzchos J. (2012): Miniaturized Raman system and the detection of traces of life in halite from the Atacama Desert: some considerations for the search for life signatures on Mars. Astrobiology 12, 1095-1099. (http://online.liebertpub.com/toc/ast/12/12) |
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Martina Vítková and Vojtěch Ettler together with colleagues from DHI and DTU published first leaching data on the leaching behaviour of Co-smelter fly ash from Zambia. The leaching was supported by ORCHESTRA geochemical modeling and investigation of newly formed phases. Simulations indicated that laterite and carbonate amendments would be suitable local solution for the chemical stabilization of this fly ash. Vítková M., Hyks J., Ettler V., Astrup T. (2013): Stability and leaching of cobalt smelter fly ash. Applied Geochemistry 29, 117-125. (doi: 10.1016/j.apgeochem.2012.11.003) |
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Together with our colleagues from Czech University of Life Sciences Prague, we recently published a review on chemical stabilization of metal-/metalloid-polluted soils using oxides (mostly Fe-, Mn- and Al-oxides). Read this contribution in the January issue of Environmental Pollution. Komárek M., Vaněk A., Ettler V. (2013): Chemical stabilization of metals and arsenic in contaminated soils using oxides - A review. Environmental Pollution 172, 9-22. (10.1016/j.envpol.2012.07.045) |