Speciation of the Selenium in Groundwater Samples of Different Aquifers from Coal Mining Fields: Applied a Green Analytical Technique

Lashari, Ayaz Ali; Kazi, Tasneem Gul; Baig, Jameel Ahmed; Afridi, Hassan Imran; Memon, Aijaz Ahmed

doi:10.1007/s11270-022-05898-x

Cited by 7 publications

(2 citation statements)

References 42 publications

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“…In the current work, phosphate inhibition of selenite uptake in D. magna occurred at ratios as low as 2.5:1 (10 μM phosphate vs. 4 μM selenite). Selenite concentrations in contaminated waters are usually in the order of 0.15 μM ( Bujdoš et al, 2005 ; Lashari et al, 2022 ). Thus, phosphate concentrations in the vicinity of 0.5 μM are likely to have an effect on daphnid selenite uptake, assuming that the use of the putative phosphate transporter is conserved at lower selenite concentrations.…”

Section: Discussionmentioning

confidence: 99%

Mechanistic characterization of waterborne selenite uptake in the water flea, Daphnia magna, indicates water chemistry affects toxicity in coal mine-impacted waters

Klaczek,

Goss,

Glover

2024

Conservation Physiology

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Concentrations of selenium that exceed regulatory guidelines have been associated with coal mining activities and have been linked to detrimental effects on aquatic ecosystems and the organisms therein. Although the major route of selenium uptake in macroinvertebrates is via the diet, the uptake of waterborne selenite (HSeO3−), the prominent form at circumneutral pH, can be an important contributor to selenium body burden and thus selenium toxicity. In the current study, radiolabelled selenite (Se75) was used to characterize the mechanism of selenite uptake in the water flea, Daphnia magna. The concentration dependence (1–32 μM) of selenite uptake was determined in 1-hour uptake assays in artificial waters that independently varied in bicarbonate, chloride, sulphate, phosphate and selenate concentrations. At concentrations representative of those found in highly contaminated waters, selenite uptake was phosphate-dependent and inhibited by foscarnet, a phosphate transport inhibitor. At higher concentrations, selenite uptake was dependent on waterborne bicarbonate concentration and inhibited by the bicarbonate transporter inhibitor DIDS (4,4′-diisothiocyano-2,2′-stilbenedisulfonic acid). These findings suggest that concentrations of phosphate in coal mining-affected waters could alter selenite uptake in aquatic organisms and could ultimately affect the toxic impacts of selenium in such waters.

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Section: Discussionmentioning

confidence: 99%

Mechanistic characterization of waterborne selenite uptake in the water flea, Daphnia magna, indicates water chemistry affects toxicity in coal mine-impacted waters

Klaczek,

Goss,

Glover

2024

Conservation Physiology

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“…In another paper a deep eutectic solvent (DES)-based LME has been proposed to preconcentrate Se IV present in ground waters of coal mining areas. 114 The DES employed was synthesised by heating ZnCl 2 : CH 3 CONH 2 in a molar ratio of 1 : 2 and 1 : 3. The Se IV was first complexed with a chelating agent (0.1–0.5% APDC) and mixed with DES for extraction.…”

Section: Elemental Speciation Analysismentioning

confidence: 99%