@article{2-s2.0-85126645797,

title = {Effect of peat organic matter on sulfide weathering and thallium reactivity: Implications for organic environments},

author = { K. Vejvodová and A. Vaněk and M. Spasić and M. Mihaljevič and V. Ettler and M. Vaňková and P. Drahota and L. Teper and P. Vokurková and L. Pavlů and T. Zádorová and O. Drábek},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85126645797&doi=10.1016%2fj.chemosphere.2022.134380&partnerID=40&md5=4ec8ddc1518ba6e7d23b0c6f746c562d},

doi = {10.1016/j.chemosphere.2022.134380},

issn = {00456535},

year  = {2022},

date = {2022-01-01},

journal = {Chemosphere},

volume = {299},

publisher = {Elsevier Ltd},

abstract = {Weathering of Tl-containing sulfides in a model (12-week) peat pot trial was studied to better understand their geochemical stability, dissolution kinetics, alteration products and the associated release and mobility of anthropogenic Tl in organic environments. We also present the effect of industrial acid rainwater on sulfide degradation and Tl migration in naturally acidic peat. Sphalerite (ZnS) was much less stable in peat than other Tl-containing sulfides (galena and pyrite), and thus acted as a major phase responsible for Tl mobilization. Furthermore, Tl incongruently leached out over Zn from ZnS, and accumulated considerably more in the peat solutions (≤5 μg Tl/L) and the peat samples (≤0.4 mg Tl/kg) that were subjected to acid rain watering compared to a deionized H2O regime. This finding was in good agreement with the absence of secondary Tl-containing phases, which could potentially control the Tl flux into the peat. The behavior of Tl was not as conservative as Pb throughout the trial, since a higher peat mobility and migration potential of Tl was observed compared to Pb. In conclusion, industrial acid precipitations can significantly affect the stability of ZnS even in acidic peat/organic environments, making it susceptible to enhanced weathering and Tl release in the long term. © 2022 Elsevier Ltd},

note = {2},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85117098360,

title = {Evaluation of thallium isotopic fractionation during the metallurgical processing of sulfides: An update},

author = { A. Vaněk and K. Vejvodová and M. Mihaljevič and V. Ettler and J. Trubač and M. Vaňková and L. Teper and J. Cabała and K. Sutkowska and A. Voegelin and J. Göttlicher and O. Holubík and P. Vokurková and L. Pavlů and I. Galušková and T. Zádorová},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85117098360&doi=10.1016%2fj.jhazmat.2021.127325&partnerID=40&md5=737c0d80422f0fa400b2979f2d90ac28},

doi = {10.1016/j.jhazmat.2021.127325},

issn = {03043894},

year  = {2022},

date = {2022-01-01},

journal = {Journal of Hazardous Materials},

volume = {424},

publisher = {Elsevier B.V.},

abstract = {In this study, we report combined Tl isotopic and Tl mineralogical and speciation data from a set of Tl-rich sulfide concentrates and technological wastes from hydrometallurgical Zn extraction. We also present the first evaluation of Tl isotopic ratios over a cycle of sulfide processing, from the ore flotation to pyro- and hydrometallurgical stages. The results demonstrate that the prevailing Tl form in all samples is Tl(I), without any preferential incorporation into sulfides or Tl-containing secondary phases, indicating an absence of Tl redox reactions. Although the Tl concentrations varied significantly in the studied samples (~9–280 mg/kg), the overall Tl isotopic variability was small, in the range of −3.1 to −4.4 ± 0.7 (2σ) ε205Tl units. By combining present ε205Tl results with the trends first found for a local roasting plant, it is possible to infer minimum Tl isotopic effects throughout the studied industrial process. As a result, the use of Tl isotopic ratios as a source proxy may be complicated or even impossible in areas with naturally high/extreme Tl background contents. On the other hand, areas with two or more isotopically contrasting Tl sources allow for relatively easy tracing, i.e., in compartments which do not suffer from post-depositional isotopic redistributions. © 2021 Elsevier B.V.},

note = {11},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85113596117,

title = {Thallium and lead variations in a contaminated peatland: A combined isotopic study from a mining/smelting area},

author = { A. Vaněk and K. Vejvodová and M. Mihaljevič and V. Ettler and J. Trubač and M. Vaňková and V. Goliáš and L. Teper and K. Sutkowska and P. Vokurková and V. Penížek and T. Zádorová and O. Drábek},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85113596117&doi=10.1016%2fj.envpol.2021.117973&partnerID=40&md5=434243ab1512d960403f2e988d6b8c8a},

doi = {10.1016/j.envpol.2021.117973},

issn = {02697491},

year  = {2021},

date = {2021-01-01},

journal = {Environmental Pollution},

volume = {290},

publisher = {Elsevier Ltd},

abstract = {Vertical profiles of Tl, Pb and Zn concentrations and Tl and Pb isotopic ratios in a contaminated peatland/fen (Wolbrom; Poland) were studied to address questions regarding (i) potential long-term immobility of Tl in a peat profile, and (ii) a possible link in Tl isotopic signatures between a Tl source and a peat sample. Both prerequisites are required for using peatlands as archives of atmospheric Tl deposition and Tl isotopic ratios as a source proxy. We demonstrate that Tl is an immobile element in peat with a conservative pattern synonymous to that of Pb, and in contrast to Zn. However, the peat Tl record was more affected by geogenic source(s), as inferred from the calculated element enrichments. The finding further implies that Tl was largely absent from the pre-industrial emissions (>~250 years BP). The measured variations in Tl isotopic ratios in respective peat samples suggest a consistency with anthropogenic Tl (ε205Tl between ~ -3 and − 4), as well as with background Tl isotopic values in the study area (ε205Tl between ~0 and − 1), in line with detected 206Pb/207Pb ratios (1.16–1.19). Therefore, we propose that peatlands can be used for monitoring trends in Tl deposition and that Tl isotopic ratios can serve to distinguish its origin(s). However, given that the studied fen has a particularly complicated geochemistry (attributed to significant environmental changes in its history), it seems that ombrotrophic peatlands could be better suited for this type of Tl research © 2021 The Authors},

note = {5},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-85029603960,

title = {Thallium isotopes in metallurgical wastes/contaminated soils: A novel tool to trace metal source and behavior},

author = { A. Vaněk and Z. Grösslová and M. Mihaljevič and V. Ettler and J. Trubač and V. Chrastný and V. Penížek and L. Teper and J. Cabała and A. Voegelin and T. Zádorová and V. Oborná and O. Drábek and O. Holubík and J. Houška and L. Pavlů and C. Ash},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85029603960&doi=10.1016%2fj.jhazmat.2017.09.020&partnerID=40&md5=a2008a58619008e2551aaa2a6935ea24},

doi = {10.1016/j.jhazmat.2017.09.020},

issn = {03043894},

year  = {2018},

date = {2018-01-01},

journal = {Journal of Hazardous Materials},

volume = {343},

pages = {78-85},

publisher = {Elsevier B.V.},

abstract = {Thallium (Tl) concentration and isotope data have been recorded for contaminated soils and a set of industrial wastes that were produced within different stages of Zn ore mining and metallurgical processing of Zn-rich materials. Despite large differences in Tl levels of the waste materials (1–500 mg kg−1), generally small changes in ε205Tl values have been observed. However, isotopically lighter Tl was recorded in fly ash (ε205Tl ∼ −4.1) than in slag (ε205Tl ∼ −3.3), implying partial isotope fractionation during material processing. Thallium isotope compositions in the studied soils reflected the Tl contamination (ε205Tl ∼ −3.8), despite the fact that the major pollution period ended more than 30 years ago. Therefore, we assume that former industrial Tl inputs into soils, if significant, can potentially be traced using the isotope tracing method. We also suggest that the isotope redistributions occurred in some soil (subsurface) horizons, with Tl being isotopically heavier than the pollution source, due to specific sorption and/or precipitation processes, which complicates the discrimination of primary Tl. Thallium isotope analysis proved to be a promising tool to aid our understanding of Tl behavior within the smelting process, as well as its post-depositional dynamics in the environmental systems (soils). © 2017 Elsevier B.V.},

note = {52},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84988592724,

title = {Isotopic Tracing of Thallium Contamination in Soils Affected by Emissions from Coal-Fired Power Plants},

author = { A. Vaněk and Z. Grösslová and M. Mihaljevič and J. Trubač and V. Ettler and L. Teper and J. Cabała and J. Rohovec and T. Zádorová and V. Penížek and L. Pavlů and O. Holubík and K. Němeček and J. Houška and O. Drábek and C. Ash},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84988592724&doi=10.1021%2facs.est.6b01751&partnerID=40&md5=56b168f79196a61a81ed38bbe047fd9c},

doi = {10.1021/acs.est.6b01751},

issn = {0013936X},

year  = {2016},

date = {2016-01-01},

journal = {Environmental Science and Technology},

volume = {50},

number = {18},

pages = {9864-9871},

publisher = {American Chemical Society},

abstract = {Here, for the first time, we report the thallium (Tl) isotope record in moderately contaminated soils with contrasting land management (forest and meadow soils), which have been affected by emissions from coal-fired power plants. Our findings clearly demonstrate that Tl of anthropogenic (high-temperature) origin with light isotope composition was deposited onto the studied soils, where heavier Tl (ϵ205Tl ∼ -1) naturally occurs. The results show a positive linear relationship (R2 = 0.71) between 1/Tl and the isotope record, as determined for all the soils and bedrocks, also indicative of binary Tl mixing between two dominant reservoirs. We also identified significant Tl isotope variations within the products from coal combustion and thermo-desorption experiments with local Tl-rich coal pyrite. Bottom ash exhibited the heaviest Tl isotope composition (ϵ205Tl ∼ 0), followed by fly ash (ϵ205Tl between -2.5 and -2.8) and volatile Tl fractions (ϵ205Tl between -6.2 and -10.3), suggesting partial Tl isotope fractionations. Despite the evident role of soil processes in the isotope redistributions, we demonstrate that Tl contamination can be traced in soils and propose that the isotope data represent a possible tool to aid our understanding of postdepositional Tl dynamics in surface environments for the future. © 2016 American Chemical Society.},

note = {48},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84928243598,

title = {Cadmium isotope fractionation within the soil profile complicates source identification in relation to Pb-Zn mining and smelting processes},

author = { V. Chrastný and E. Čadková and A. Vaněk and L. Teper and J. Cabała and M. Komárek},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84928243598&doi=10.1016%2fj.chemgeo.2015.04.002&partnerID=40&md5=40d413010c9f42d42104f529429553fb},

doi = {10.1016/j.chemgeo.2015.04.002},

issn = {00092541},

year  = {2015},

date = {2015-01-01},

journal = {Chemical Geology},

volume = {405},

pages = {1-9},

publisher = {Elsevier},

abstract = {Many cadmium species are among the most toxic of environmental contaminants. Because Cd in many forms is mobile in the environment, identifying its sources is a crucial aspect of remedial intervention. Data from the literature suggest that Cd isotopes could be a useful tool for such identification, but no data about Cd isotopes through entire soil profiles has yet been published. We compared in this paper the Cd isotope composition of three forest and two meadow soil profiles affected by different contamination sources near the Olkusz Pb-Zn smelter in southern Poland together with the main industrial source of possible contamination at that location. In the contaminated forest soil profile, the upper soils reflected the heaviest Cd isotope compositions, while the deeper soil humus layer had the lightest Cd isotope compositions. We found that the overall Cd isotope heterogeneity in industrial wastes was overlapped by the overall Cd isotope fractionation within the forest soil profile near the smelter (ε114/110CdNIST3108 values of 5.14 compared to 11.8; respectively). Both meadow soil profiles had approximately a Cd isotope composition corresponding to the processed ore (Olkusz sphalerite). © 2015 Elsevier B.V..},

note = {66},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84870296687,

title = {Geochemical position of thallium in soils from a smelter-impacted area},

author = { A. Vaněk and V. Chrastný and M. Komárek and V. Penížek and L. Teper and J. Cabała and O. Drábek},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84870296687&doi=10.1016%2fj.gexplo.2012.09.002&partnerID=40&md5=a5630bc08c082a94e162af45104d4556},

doi = {10.1016/j.gexplo.2012.09.002},

issn = {03756742},

year  = {2013},

date = {2013-01-01},

journal = {Journal of Geochemical Exploration},

volume = {124},

pages = {176-182},

abstract = {The study complements our previous research, focused on metal contamination of soils in the area historically affected by Zn smelting near Olkusz (Silesia-Krakow region; southern Poland) and provides complex data on the geochemistry of anthropogenic Tl in soils with contrasting land use. Significant differences in Tl concentrations and chemical fractionation were observed between forest and grassland soil profiles, indicating the effect of land use on Tl behavior. Our findings proved the ability of forest soils to concentrate high amounts of Tl, particularly within the organic layers. A comparison of Tl concentrations in the upper (O or A) and the bottom horizons (C) of forest and grassland soils clearly demonstrates vertical mobility of Tl. The results of the sequential extraction procedure indicated the important role of soil organic matter in Tl mobilization, probably as a result of long-term alteration/dissolution of smelter-derived particles followed with Tl release; up to ~. 20% of total Tl amount was associated with the exchangeable/acid-extractable fraction in forest soils. The Tl concentrations detected in grassland soils were up to an order of magnitude lower than in forest soils. Taking into account the dominant bonding of Tl to the residual fraction, Tl present in grassland soils poses lower environmental hazard with respect to the potential mobilization or uptake by plants. Nevertheless, further research on Tl dynamics with emphasis to the environmental stability of Tl-bearing phases is essential for precise understanding of Tl behavior in such polluted (agro)systems. © 2012 Elsevier B.V.},

note = {53},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-84862852926,

title = {Geochemical position of Pb, Zn and Cd in soils near the Olkusz mine/smelter, South Poland: Effects of land use, type of contamination and distance from pollution source},

author = { V. Chrastný and A. Vaněk and L. Teper and J. Cabała and J. Procházka and L. Pechar and P. Drahota and V. Penížek and M. Komárek and M. Novák},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84862852926&doi=10.1007%2fs10661-011-2135-2&partnerID=40&md5=b7eafc718519a7b7fdf975c5f9fdbfab},

doi = {10.1007/s10661-011-2135-2},

issn = {01676369},

year  = {2012},

date = {2012-01-01},

journal = {Environmental Monitoring and Assessment},

volume = {184},

number = {4},

pages = {2517-2536},

abstract = {The soils adjacent to an area of historical mining, ore processing and smelting activities reflects the historical background and a mixing of recent contamination sources. The main anthropogenic sources of metals can be connected with historical and recent mine wastes, direct atmospheric deposition from mining and smelting processes and dust particles originating from open tailings ponds. Contaminated agriculture and forest soil samples with mining and smelting related pollutants were collected at different distances from the source of emission in the Pb-Zn-Ag mining area near Olkusz, Upper Silesia to (a) compare the chemical speciation of metals in agriculture and forest soils situated at the same distance from the point source of pollution (paired sampling design), (b) to evaluate the relationship between the distance from the polluter and the retention of the metals in the soil, (c) to describe mineralogy transformation of anthropogenic soil particles in the soils, and (d) to assess the effect of deposited fly ash vs. dumped mining/smelting waste on the mobility and bioavailability of metals in the soil. Forest soils are much more affected with smelting processes than agriculture soils. However, agriculture soils suffer from the downward metal migration more than the forest soils. The maximum concentrations of Pb, Zn, and Cd were detected in a forest soil profile near the smelter and reached about 25 g kg -1, 20 g kg -1 and 200 mg kg -1 for Pb, Zn and Cd, respectively. The metal pollutants from smelting processes are less stable under slightly alkaline soil pH then acidic due to the metal carbonates precipitation. Metal mobility ranges in the studied forest soils are as follows: Pb > Zn ~ Cd for relatively circumneutral soil pH (near the smelter), Cd > Zn > Pb for acidic soils (further from the smelter). Under relatively comparable pHconditions, the main soil properties influencing metal migration are total organic carbon and cation exchange capacity. The mobilization of Pb, Zn and Cd in soils depends on the persistence of the metal-containing particles in the atmosphere; the longer the time, the more abundant the stable forms. The dumped mining/smelting waste is less risk of easily mobilizable metal forms, however, downward metal migration especially due to the periodical leaching of the waste was observed. © Springer Science+Business Media B.V. 2011.},

note = {86},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{2-s2.0-78649697668,

title = {Distribution of thallium and accompanying metals in tree rings of Scots pine (Pinus sylvestris L.) from a smelter-affected area},

author = { A. Vaněk and V. Chrastný and L. Teper and J. Cabała and V. Penížek and M. Komárek},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-78649697668&doi=10.1016%2fj.gexplo.2010.10.006&partnerID=40&md5=b0428861d7c9b3e6f9f3543ff1397b49},

doi = {10.1016/j.gexplo.2010.10.006},

issn = {03756742},

year  = {2011},

date = {2011-01-01},

journal = {Journal of Geochemical Exploration},

volume = {108},

number = {1},

pages = {73-80},

abstract = {Distribution of Tl, Zn, Cd, Pb, K, Ca, Mg and Mn and Pb isotopic composition in tree rings of Scots pine (Pinus sylvestris L.) from an area affected by primary Zn smelting (Olkusz; southern Poland) were investigated. Elevated concentrations of Tl (up to 0.8mg kg-1) in pine trees imply that conifers tend to accumulate this metal to some extent. A generally positive relationship between soil and tree-ring Tl levels was identified. The Tl patterns in stem wood did not correspond to changes in Tl deposition; the lateral translocation of Tl in the sapwood and its accumulation at the sapwood-heartwood boundary (i.e.; in the inner sapwood) is suggested. It is probable that the specific behavior of Tl in trees results from its biogeochemical analogy with K. In contrast, tree-ring patterns of Zn and Cd significantly correlated with their deposition; nevertheless, a partial shift of these metals towards the stem center cannot be excluded. The isotopic composition of Pb (206Pb/207Pb ~1.172-1.184) in trees and underlying soils revealed the predominant influence of smelter emissions (206Pb/207Pb ~1.17) on Pb contamination. Analysis of main nutrients (Ca; Mg and Mn) in wood reflected environmental changes related to acid deposition. © 2010 Elsevier B.V.},

note = {21},

keywords = {},

pubstate = {published},

tppubtype = {article}

}