Thallium stable isotope ratios in naturally Tl-rich soils

Abundance and fate of thallium and its stable isotopes in the environment

“…The e 205 Tl values were also used as a proxy for redox-controlled geochemical processes that took place during rock weathering and soil formation (Vaněk et al 2020). This study was conducted on naturally Tl-rich soils developed on Fe-As-Tl mineralized dolomites at the locality Erzmatt (Swiss Jura Mts.).…”

“…The geochemical fate of thallium in many environmental compartments has been hindered due to low concentrations which are typically in the range of ng/ L-lg/L or ng/kg-lg/kg. An increased number of thallium determinations in geologic, environmental, biological and industrial materials has been possible due to rapid developments in mass spectrometry techniques employing inductively coupled-atomic/ optical emission spectrometry (ICP-AES/ICP-OES), single collector sector-field or quadrupole inductively coupled-mass spectrometry (SFICP-MS, QICP-MS) (e.g., Xiao et al 2004a b;Krachler et al 2008;Li et al 2009;Kellerhals et al 2010;Casiot et al 2011;Bačeva et al 2014;Vaněk et al 2015;Karbowska 2016;Caritat and Reimann 2017;Di Candia et al 2020), and multi collector-inductively coupled plasma-mass spectrometry (MC-ICP-MS), which has also been used to measure 205 Tl/ 203 Tl ratios (e.g., Nielsen et al 2004;2017;Vaněk et al 2020). Another very sensitive analytical technique of thallium determination is flow-injection differential-pulse anodic stripping voltammetry (FI-DP-ASV), enabling a determination of Tl in waters at a concentration of pg/L (Jakubowska et al 2008).…”

“…These areas are occupied by tailings piles, mineral settling tanks, strongly acidic seeps and derelict lands posing a real hazard to various abiotic and biotic systems, including human beings. Recently, a variety of geochemical studies have also employed stable thallium isotopes to reconstruct redox conditions in different aquatic systems, to fingerprint relative pollution source strengths and to evaluate mobility of this element and its geochemical interactions in the mineral-water and soil-plant systems (e.g., Rehkämper and Nielsen 2004;Enghag 2004;Nielsen et al 2004Nielsen et al , 2006Nielsen et al , 2009Nielsen et al , 2017Baker et al 2009;Vaněk et al 2015Vaněk et al , 2016Vaněk et al , 2020Grösslova et al 2018). This is the reason why this paper also gives an overview on applications of 205 Tl/ 203 Tl ratios in solving various geologic and environmental issues.…”

Calcium Enhances Thallium Uptake in Green Cabbage (Brassica oleracea var. capitata L.)

“…A guideline for the environmental quality of Tl in soil is thus far only available in Canada [12]. However, elevated concentrations of Tl have been detected in the soil in various regions [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32], due to either pedogeochemical or anthropogenic (i.e., mining, processing, and smelting) sources.…”