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首页> 外文期刊>Advances in colloid and interface science >Redox chemistry of vanadium in soils and sediments: Interactions with colloidal materials, mobilization, speciation, and relevant environmental implications - A review
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Redox chemistry of vanadium in soils and sediments: Interactions with colloidal materials, mobilization, speciation, and relevant environmental implications - A review

机译：氧化还原化学钒土壤和沉积物：与胶体材料的相互作用，动员，形态和相关环境影响 - 审查

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摘要

Vanadium (V), although serving as an important component of industrial activities, has bioinorganic implications to pose highly toxic hazards to humans and animals. Soils and sediments throughout the world exhibit wide ranges of vanadium concentrations. Although vanadium toxicity varies between different species, it is mainly controlled by soil redox potential (EH). Nonetheless, knowledge of the redox geochemistry of vanadium lags in comparison to what is known about other potentially toxic elements (PTEs). In particular, the redox-induced speciation and mobilization of vanadium in soils and sediments and the associated risks to the environment have not been reviewed to date. Therefore, this review aims to address 1) the content and geochemical fate of vanadium in soils and sediments, 2) its redox-induced release dynamics, 3) redox-mediated chemical reactions between vanadium and soil organic and inorganic colloidal materials in soil solution, 4) its speciation in soil solution and soil sediments, and 5) the use of advanced geochemical and spectroscopic techniques to investigate these complex systems. Vanadium (+5) is the most mobile and toxic form of its species while being the thermodynamically stable valence state in oxic environments, while vanadium (+3) might be expected to be predominant under euxinic (anoxic and sulfidic) conditions. Vanadium can react variably in response to changing soil EH: under anoxic conditions, the mobilization of vanadium can decrease because vanadium (+5) can be reduced to relatively less soluble vanadium (+4) via inorganic reactions such as with H2S and organic matter and by metal-reducing microorganisms. On the other hand, dissolved concentrations of vanadium can increase at low EH in many soils to reveal a similar pattern to that of Fe, which may be due to the reductive dissolution of Fe(hydr)oxides and the release of the associated vanadium. Those differences in vanadium release dynamics might occur as a result of the direct impa
机译：钒（v），虽然作为工业活动的重要组成部分，但具有生物能源的影响，对人类和动物带来了高度毒害的危害。全世界的土壤和沉积物表现出广泛的钒浓度范围。虽然钒毒性在不同的物种之间变化，但它主要由土壤氧化还原潜力（EH）控制。尽管如此，与其他潜在有毒元素（PTES）所知的钒滞下的钒滞下的知识滞后的知识。特别是，迄今尚未审查氧化还原诱导的土壤和沉积物的钒和钒的钒，以及对环境的相关风险。因此，本综述旨在解决1）钒在土壤和沉积物中的含量和地球化学命运，2）其氧化还原诱导动力学，3）氧化还原介导的钒和土壤溶液与土壤溶液中的无机胶体材料之间的化学反应， 4）其在土壤溶液和土壤沉积物中的形态，5）使用先进的地球化学和光谱技术来研究这些复杂的系统。钒（+5）是其物种中最具移动和毒性形式，同时是氧化环境中的热力学稳定的价状态，而钒（+3）可能预期在肠蛋白（缺氧和硫酸）条件下占主导地位。钒可以响应于变化的土壤eh：在缺氧条件下，钒的动员可以减少，因为钒（+5）可以通过无机反应（如H2S和有机物质）还原成相对较低的溶血性钒（+4）通过降低金属微生物。另一方面，许多土壤中的溶解浓度可以在低EH下增加，以揭示与Fe的类似模式，这可能是由于Fe（氢）氧化物的还原溶解和相关钒的释放。由于直接Impa，可能会发生钒释放动力学的那些差异

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