Phytoavailability and toxicity of trivalent and hexavalent chromium to Brassica juncea
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چکیده
منابع مشابه
Chronic toxicity studies. II. Hexavalent and trivalent chromium administered in drinking water to rats.
Acute toxicity of chromium by topical exposure or inhalation resulting in ulcerlike lesions has been recognized as an industrial hazard for many years. 1 Prolonged exposure to chromate mists has been suggested as contributing to the high incidence of lung cancer in certain industries.2•3 Acute poisoning by ingestion is.. well documented.4·5 Animal studies haYe also been made to determine sympto...
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The effect of trivalent and hexavalent chromium compounds on the activities of selective hepatic drug metabolising enzymes and renal enzymes, in relation to the duration of exposure and tissue concentration of the metal in rats, was investigated to evaluate their potential toxicity. The activity of hepatic aniline hydroxylase decreased more markedly than that of amino N-demethylase on treatment...
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Protonated or Ca-form Sargassum seaweed biomass bound up to 40 mg/g of Cr(III) by ion exchange at pH 4. An ion-exchange model assuming that the only species taken up by the biomass was Cr(OH)2+ successfully fitted the experimental biosorption data for Cr(III). The maximum uptake of Cr(VI) by protonated Sargassum biomass at pH 2 was explained by simultaneous anion exchange and Cr(VI) to Cr(III) ...
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The effects of chromate on sulfate uptake and assimilation were investigated in the accumulator Brassica juncea (L.) Czern. Seven-day-old plants were grown for 2 d under the following combination of sulfate and chromate concentration: (i) no sulfate and no chromate (-S), (ii) no sulfate and 0.2 mmol L(-1) chromate (-S +Cr), (iii) 1 mmol L(-1) sulfate and no chromate (+S), or (iv) 1 mmol L(-1) s...
متن کاملHexavalent Chromium Toxicity in Pituitary and Thyroid Glands
Hexavalent chromium as K2Cr2O7 (60mg/kgb.w) was administered intraperitoneally to male Sprague Dawley rats. In the thyroid gland, chromium concentration decreased significantly (P<0.01) as compared to the control tissue. Serum FT3 and FT4 levels decreased significantly (P<0.01 and P<0.001 respectively), while serum TSH concentration increased significantly (P< 0.01) than the control. Histologic...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 2004
ISSN: 0028-646X,1469-8137
DOI: 10.1111/j.1469-8137.2004.01027.x