Kinetics of the desorption of mercury from selected freshwater sediments as influenced by chloride

Wang, J. S.; Huang, P. M.; Liaw, W. K.; Hammer, U. T.

doi:10.1007/bf00342297

Cited by 29 publications

(11 citation statements)

References 16 publications

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“…The reduction in PCV and Hb in this study revealed microcytic hypochromic anemia. This observation was consistent with an earlier observation of others on genotoxic potential of mercuric chloride and different anti-oxidants alone or in combined form in the liver and other tissues (Wang et al, 2007;Burger et al, 2011;Cordeiro Júnior et al, 2012). Coadministration of mercuric chloride with O. basilicum in the present study resulted in ameliorative effects on haematobiochemical parameters.…”

Section: Discussionsupporting

confidence: 93%

Therapeutics potential of Ocimum basilicum following mercury chloride-induced hepatotoxicity in rats (Rattus norvegicus)

Adelakun¹,

Omotoso²,

Akingbade³

2018

Braz. J. Biol. Sci.

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Globally mercury (Hg) has been reported as one of heavy metal of known toxicity, noted for inducing public health disasters. Present study examines the therapeutics potentials of Ocimum basilicum on mercury chloride (HgCl2) induced hepatotoxicity in Wistar rats. Thirty adult Wistar rats randomly divided into six groups (A-F) of five rats each. Group A served as control was given 2 mL/day of distilled water, Group B, C, D, E and F received 500 mg/kg body weight (bwt) of O. basilicum extract, 20 mg/kg/bwt of HgCl2, 40 mg/kg bwt of HgCl2, 20 mg/kg bwt of HgCl2 and 500 mg/kg bwt O. basilicum leave extract, 40 mg/kg bwt and 500 mg/kg bwt O. basilicum administered daily by gastric gavage, for 21 consecutive days. The gross anatomical parameters of the liver and liver histology were assessed. Liver oxidative stress was evaluated by liver superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), reduced glutathione (GSH) and malondialdehyde (MDA) assays. The activities of the biomarker enzymes of the liver (alanine transaminase, aspartate transaminase and alkaline phosphatase were assayed). Histological profiles of the liver revealed derangement of the liver cytoarchitecture following consumption of mercury chloride and a marked improvement was observed after O. basilicum administration. Similarly, O. basilicum improved the reduction of antioxidant parameters (SOD, CAT, GPx and GSH) and the increased MDA caused by mercury chloride consumption. O. basilicum thus proffer protection against free radical mediated oxidative stress in mercury chloride-induced hepatotoxicity in rats.

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Section: Discussionsupporting

confidence: 93%

Therapeutics potential of Ocimum basilicum following mercury chloride-induced hepatotoxicity in rats (Rattus norvegicus)

Adelakun¹,

Omotoso²,

Akingbade³

2018

Braz. J. Biol. Sci.

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“…It has been estimated that 90-99% of the total Hg in the freshwater system is sorbed by the particulates (Lindberg et al 1975;Ramamoorthy and Rust 1976;Kudo et al 1977;Reeder et al 1979). The extent of the association of Hg with sediment particulates is controlled by the nature and properties of sediments and ionic factors including organic ligands (Moore and Ramamoorthy 1984;Lindqvist 1991aLindqvist , 1991bWang et al 1991). The speciation of metals in solution may enhance the adsorption if ligands themselves are adsorbed onto the mineral surface.…”

Section: Introductionmentioning

confidence: 99%

Influence of Citric Acid and Glycine on the Adsorption of Mercury (II) by Kaolinite under Various pH Conditions

Singh

Huang

Hammer

et al. 1996

Clays and clay miner.

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Abstract--This investigation was carried out to study the effect of different concentrations of citric acid and glycine, which are common in freshwaters, on the kinetics of the adsorption of Hg by kaolinite under various pH conditions. The data indicate that Hg adsorption by kaolinite at different concentrations of citric acid and glycine obeyed multiple first order kinetics. In the absence of the organic acids, the rate constants of the initial fast process were 46 to 75 times faster than those of the slow adsorption process in the pH range of 4.00 to 8.00. Citric acid had a significant retarding effect on both the fast and slow adsorption process at pHs of 6.0 and 8.0. It had a significant promoting effect on the fast and slow adsorption process at pH 4.00. Glycine had a pronounced enhancing effect on the rate of Hg adsorption by kaolinite during the fast process. The rise in pH of the system further increased the effect of glycine on Hg adsorption. The magnitude of the retarding/promoting effect upon the rate of Hg adsorption was evidently dependent upon the pH, structure and functionality of organic acids, and molar ratio of the organic acid/Hg. The data obtained suggest that low-molecular-weight organic acids merit close attention in studying the kinetics and mechanisms of the binding of Hg by sediment particulates and the subsequent food chain contamination.

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“…That the presence of PO 4 3− or high concentration of Cl − increased the mercury concentrations in stabilization solution is probably due to the formation of water-soluble mercury chloride and mercury phosphate complexes in the presence of chloride and phosphate. This phenomenon has been studied by several researchers [17][18][19][20][21]. However, the mercury stabilization process using TFZ is still effective.…”

Section: Interferences By CL − and Po 4 3−mentioning

confidence: 99%

Stabilization/solidification (S/S) of mercury-contaminated hazardous wastes using thiol-functionalized zeolite and Portland cement

Zhang

Wang

Zhang

et al. 2009

Journal of Hazardous Materials

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Kinetics of the desorption of mercury from selected freshwater sediments as influenced by chloride

Cited by 29 publications

References 16 publications

Therapeutics potential of Ocimum basilicum following mercury chloride-induced hepatotoxicity in rats (Rattus norvegicus)

Therapeutics potential of Ocimum basilicum following mercury chloride-induced hepatotoxicity in rats (Rattus norvegicus)

Influence of Citric Acid and Glycine on the Adsorption of Mercury (II) by Kaolinite under Various pH Conditions

Stabilization/solidification (S/S) of mercury-contaminated hazardous wastes using thiol-functionalized zeolite and Portland cement

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