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Navrátil, Tomáš; Skřivan, Petr; Minařík, Luděk; Žigová, Anna

doi:10.1023/a:1021349228632

Cited by 14 publications

(3 citation statements)

References 17 publications

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“…Ni, which is relatively enriched with clay is more mobile in slightly acidic aquatic mediums. Studies done by reference [56] have also recognized similar output and major relations with Mg 2+ , Ca 2+ and Sr, and indicated pH as a dominant controlling factor. The increasing ion reduction and suggested co-dissolution with Fe, Co and Ni with a distinct relation and this desorption may be due to lowering of pH, with successive adsorption resulting due to higher pH [57].…”

Section: Heavy Metalsmentioning

confidence: 82%

Assessment of Heavy Metals Pollution and Stable Isotopic Signatures in Hard Rock Aquifers of Krishnagiri District, South India

et al. 2019

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The area chosen for study, Krishnagiri district, has a hard rock terrain and the aquifers located there are sparsely recharged by limited rainfall. The study area has a complex geology with hard rock aquifers. To have an overall view of the trace metals concentration in the groundwater of the study area, 39 groundwater samples were collected during Post Monsoon (POM) representing various lithologies. pH, EC, TDS, major ions and 22 heavy metals were analyzed for all the samples. Ca-Cl is the dominant water facies in the groundwater, which indicates the dissolution of ions by local precipitation. The analysis shows the dominance of trace metal levels in groundwater as follows: Zn > Ba > Sr > Fe > Al > B > Mn > Cu > Pb > Ni > V > Li > Rb > Cr > Mo > Se > As > Co > Cd > Ag > Sb > Be. The pollution indices, namely the heavy metal pollution index (HPI) and degree of contamination (Cd) were calculated to assess the drinking and agriculture water usage. The pollution indices show that 2% of samples are polluted with respect to HPI and 3% with respect to the degree of contamination. The heavy metals (Al-Cr-Mn-Fe-Ni-Co-Zn-Ba-Pb) in groundwater show significant correlations with these indices, suggesting that they are affected by weathering of rock matrix with less anthropogenic impact. Stable isotopes (Oxygen and Hydrogen) were analyzed to identify the possible recharge mechanisms in the groundwater. It has been identified that recharge is mainly due to the local precipitation, which is the result of release metals in the groundwater through weathering.

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Section: Heavy Metalsmentioning

confidence: 82%

Assessment of Heavy Metals Pollution and Stable Isotopic Signatures in Hard Rock Aquifers of Krishnagiri District, South India

et al. 2019

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“…The primary route of beryllium exposure to the human body is the inhalation of dust and fumes [ 4 ], which may induce lung cancer [ 7 ], berylliosis, or pulmonary granulomatosis [ 8 ]. Due to beryllium accumulation in the environment, its concentration increases which poses a threat for both the environment and living organisms [ 9 , 10 ], especially at low pH conditions [ 11 , 12 ]. Based on the results of Jagoe et al [ 13 ], beryllium has similar toxic properties as aluminum in acidic water; however, beryllium is more toxic even at low concentrations, e.g., 10 µg/L [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Magnetically Modified Biosorbent for Rapid Beryllium Elimination from the Aqueous Environment

et al. 2021

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Although both beryllium and its compounds display high toxicity, little attention has been focused on the removal of beryllium from wastewaters. In this research, magnetically modified biochar obtained from poor-quality wheat with two distinct FexOy contents was studied as a sorbent for the elimination of beryllium from an aqueous solution. The determined elimination efficiency was higher than 80% in both prepared composites, and the presence of FexOy did not affect the sorption properties. The experimental qmax values were determined to be 1.44 mg/g for original biochar and biochar with lower content of iron and 1.45 mg/g for the biochar with higher iron content. The optimum pH values favorable for sorption were determined to be 6. After the sorption procedure, the sorbent was still magnetically active enough to be removed from the solution by a magnet. Using magnetically modified sorbents proved to be an easy to apply, low-cost, and effective technique.

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“…The catchment is well-characterized in terms of its physical properties (soils, geology, vegetation, hydrology;Janoušek et al, 2014;Navr atil et al, 2003). Lesní potok was the site of studies on beryllium cycling (Navr atil et al, 2002;Skrivan et al, 1993), lead geochemistry (Navr atil et al, 2004), manganese cycling (Navr atil et al, 2007), rare earth elements in vegetation (Špičkov a et al, 2010) and Hg in soils (Navr atil et al, 2014) and stream water (Navr atil et al, 2015). The long-term chemistry and hydrology database and previous history of research on Hg and other trace metals sets up Lesní potok well for the present study on Hg cycling.…”

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confidence: 99%

Mercury cycling during acid rain recovery at the forested Lesní potok catchment, Czech Republic

Navrátil

Shanley

Rohovec

et al. 2021

Hydrological Processes

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From 2011 to 2019, mercury (Hg) stores and fluxes were studied in the small forested catchment Lesní potok (LES) in the central Czech Republic using the watershed mass balance approach together with internal measurements. Mean input fluxes of Hg via open bulk deposition, beech throughfall and spruce throughfall during the periodwere 2.9, 3.9 and 7.6 μg m−2 year−1, respectively. These values were considerably lower than corresponding deposition Hg fluxes reported in the early years of the 21st century from catchments in Germany. Current bulk precipitation inputs at unimpacted Czech mountainous sites were lower than those in Germany. The largest Hg inputs to the catchment were via litterfall, averaging 22.6 and 17.8 μg m−2 year−1 for beech and spruce stands. The average Hg input, based on the sum of mean litterfall and throughfall deposition, was 23.0 μg m−2 year−1, compared to the estimated Hg output in runoff of 0.5 μg m−2 year−1, which is low compared to other reported values. Thus, only ~2% of Hg input is exported in stream runoff. Stream water Hg was only weakly related to dissolved organic carbon (DOC) but both concentrations were positively correlated with water temperature. The estimated total soil Hg pool averaged 47.5 mg m−2, only 4% of which was in the O‐horizon. Thus Hg in the O‐horizon pool represents 72 years of deposition at the current input flux and 3800 years of export at the current runoff flux. Age‐dating by 14C suggested that organic soil contains Hg from recent deposition, while mineral soil at 40–80 cm depth contained 4400‐year old carbon, suggesting the soil had accumulated atmospheric Hg inputs through millennia to reach the highest soil Hg pool of the soil profile. These findings suggest that industrial era intensification of the Hg cycle is superimposed on a slower‐paced Hg cycle during most of the Holocene.

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Cited by 14 publications

References 17 publications

Assessment of Heavy Metals Pollution and Stable Isotopic Signatures in Hard Rock Aquifers of Krishnagiri District, South India

Assessment of Heavy Metals Pollution and Stable Isotopic Signatures in Hard Rock Aquifers of Krishnagiri District, South India

Magnetically Modified Biosorbent for Rapid Beryllium Elimination from the Aqueous Environment

Mercury cycling during acid rain recovery at the forested Lesní potok catchment, Czech Republic

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