Le thallium dans les sols et les végétaux supérieurs. I. Le thallium dans les sols

Tremel, A.; Mench, Michel

doi:10.1051/agro:19970401

Cited by 7 publications

(2 citation statements)

References 6 publications

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“…Elevated concentrations of up to 20 mg/g (dry weight) thallium have been found in French vegetables (particularly in green cabbage) and up to 40 mg/g in rape seed (Brassica napus L.) (2,3,5).…”

Section: Introductionmentioning

confidence: 99%

“…In France, inordinately high uptake of thallium by plants of the Brassicaceae such as Iberis intermedia, Biscutella laevigata and Brassica napus has been reported (2,3,4,5,8). In France, inordinately high uptake of thallium by plants of the Brassicaceae such as Iberis intermedia, Biscutella laevigata and Brassica napus has been reported (2,3,4,5,8).…”

Section: Introductionmentioning

confidence: 99%

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Uptake of Thallium by Vegetables: Its Significance for Human Health, Phytoremediation, and Phytomining

LaCoste

Robinson

Brooks

2001

Journal of Plant Nutrition

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Eleven common vegetables (green bean, beetroot, green cabbage, lettuce, onion, pea, radish, spinach, tomato, turnip, and watercress) as well as the thallium hyperaccumulator Iberis intermedia, were grown in pot trials containing 0.7 and 3.7 mg/kg thallium added to a silt loam soil. The aims of the experiments were threefold: to estimate risks to human health of vegetables grown in thallium-rich soils, to demonstrate the potential of crops of these plants to remove thallium from polluted soils (phytoremediation), and ®nally to establish the degree to which part of the costs of remediation could be recouped by selling the extracted thallium (phytomining). Maximum thallium levels ranged from nearly 400 mg/kg (d.m.) in Iberis down to just over 1 mg/kg in green bean. The four vegetables with the highest JOURNAL

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Uptake of Thallium by Vegetables: Its Significance for Human Health, Phytoremediation, and Phytomining

LaCoste

Robinson

Brooks

2001

Journal of Plant Nutrition

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Factors affecting accumulation of thallium and other trace elements in two wild Brassicaceae spontaneously growing on soils contaminated by tailings dam waste

et al. 2007

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Adsorption mechanisms of thallium(I) and thallium(III) by titanate nanotubes: Ion-exchange and co-precipitation

Liu

Zhang

Borthwick

et al. 2014

Journal of Colloid and Interface Science

108

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Hydrothermally-synthesized titanate nanotubes (TNTs) are found to be excellent at adsorption of highly toxic thallium ions. Uptake of both thallium ions is very fast in the first 10 min. The adsorption isotherm of Tl(I) follows the Langmuir model with maximum adsorption capacity of 709.2 mg g(-1). Ion-exchange between Tl(+) and Na(+) in the interlayers of TNTs is the primary mechanism for Tl(I) adsorption. Excess Tl(+) undergoes further exchange with H(+). The adsorption mechanism is different for Tl(III), and involves either ion-exchange with Na(+) at low Tl(III) concentration or co-precipitation in the form of Tl(OH)3 with TNTs at high Tl(III) concentration. XPS analysis indicates that the ion-exchange process does not change the basic skeleton [TiO6] of TNTs, whereas Tl(OH)3 precipitation increases the percentage composition of O within the surface hydroxyl groups. XRD analysis also confirms the formation of Tl(OH)3 on TNTs at high initial concentration of Tl(III). Coexisting Na(+) and Ca(2+) hardly inhibit adsorption, indicating good selectivity for thallium by TNTs. Furthermore, TNTs can be reused efficiently after HNO3 desorption and NaOH regeneration, making TNTs a promising material to remove thallium from wastewaters. This study also confirms that co-precipitation is another important adsorption mechanism for easily hydrolytic metals by TNTs.

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Le thallium dans les sols et les végétaux supérieurs. I. Le thallium dans les sols

Abstract: Summary — Thallium in soils. Thallium is a non-essential trace metal that in spite of its acute toxicity to all organisms has not, up to the present time, been extensively studied by the scientific community.

Cited by 7 publications

References 6 publications

Uptake of Thallium by Vegetables: Its Significance for Human Health, Phytoremediation, and Phytomining

Uptake of Thallium by Vegetables: Its Significance for Human Health, Phytoremediation, and Phytomining

Factors affecting accumulation of thallium and other trace elements in two wild Brassicaceae spontaneously growing on soils contaminated by tailings dam waste

Adsorption mechanisms of thallium(I) and thallium(III) by titanate nanotubes: Ion-exchange and co-precipitation

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