Origin, mineral speciation and geochemical baseline mapping of Ni and Cr in agricultural topsoils of Thiva Valley (central Greece)

Occurence of Hexavalent Chromium in the Ophiolite Related Aquifers of Loytraki and Schinos Areas

“…The enrichment of alluvial aquifers in Cr(VI) has been also observed by Kazakis et al (2015), Megremi et al (2013) and Voutsis et al (2015). Finally, Kelepertzis et al (2013) have found that in Thiva basin which has a similar geological background, Cr(III) is mainly bounded within inherited chromite and to a lesser extent with Cr-magnetite and Cr silicates like enstatite, a conclusion which is in accordance to recent observations for this study.…”

Origin and concentration profile of chromium in a Greek aquifer

“…The mass balance between the bulk chemical composition, as calculated through the XRD results in Table 1 and measured by XRF is shown in Table 2 and indicates that in addition to the identified crystalline minerals, the amorphous fraction consists predominantly of Fe and Al, most likely Fe-and Al-oxyhydroxides. Both goethite (␣-FeOOH) and hematite have been identified in serpentine soils in Greece [31]. Goethite is thought to be the most important Fe hydroxide formed in serpentine soils [20] and is one of the primary sorbents for Cr(VI) in the geo-environment [43].…”

“…The ophiolite-rich zone extends from Albania to Northern and Central Greece and into the Anatolides zone of western Turkey [30]. Several studies have been published on the properties of ophiolites and associated metal mobility in Central Greece, where anthropogenic contamination is also of concern [27,30,31]. However there is relatively little data on Cr release from Cr-rich rocks and soils in Northern Greece, where agricultural activity is the only anthropogenic influence.…”

Landscape-geochemical mapping of the North-West of Kola Peninsula

“…Perelman. Their work on landscape-geochemical mapping has accumulated considerable data on the spatial distribution of chemical elements, their confinement to the specific soil types, and interrelations of their behaviour with the peculiarities of the landscape structure of an area (Bogdanova et al, 2008;Chiprés et al, 2009;Cicchella et al, 2013;Gavrilova, 1985;Kasimov et al, 2008;Kelepertzis et al, 2013;Rapant et al, 1999;Yuan et al, 2014). The Russian landscape scientific school is well known in the world, and investigators are using the theory (Fortescue, 1980(Fortescue, , 1992Klos et al, 2014;Polokhin et al, 2014).…”