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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Fluoride: Diffusive mobility in soil and some remedial measures to control its plant uptake
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Fluoride: Diffusive mobility in soil and some remedial measures to control its plant uptake

机译：氟化物：在土壤中的扩散迁移以及一些控制其吸收植物的补救措施

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摘要

Dietary (human) intake of fluoride (F) largely through consumption of agricultural produce grown in F contaminated environment, has recently been viewed as an important cause for several F related health problems in many parts of the world. Being a non-essential element, F is usually taken up by plants through passive uptake - a process which is dominantly diffusion controlled. Still very little is known regarding F diffusion in soil, Tn present study, diffusion of F in the alluvial soil (Entisol) of Dayalbagh (Agra) has been investigated as a function of soil water content (theta) and F concentration gradient. The data on F diffusion coefficients were recorded bg determining the F concentration profile in horizontally incubated and homogenized soil columns, under varied experimental conditions (theta = 0.12-0.25 cm cm(-3), pH = 7.3 +/- 0.2, incubation time (t) = 96-384 h, temperature = 303 +/- 1.2 K, The effects of aluminium and calcium, which are known to be strong binders for F in soil, on the F diffusion have also been investigated. The study, particularly, throws light on the possible dual role of aluminium in affecting the diffusion of F in soil which might prove critical in the ultimate uptake of F by plants in specific environmental conditions. [References: 17]
机译：膳食（人）摄入的氟主要是通过消耗在氟污染环境中生长的农产品来摄取的，最近已被认为是导致世界许多地方若干氟相关健康问题的重要原因。作为非必需元素，F通常由植物通过被动吸收吸收-该过程主要受扩散控制。关于土壤中F的扩散知之甚少，Tn目前的研究是，已经研究了Dayalbagh（Agra）的冲积土壤（Entisol）中F的扩散与土壤水分（θ）和F浓度梯度的关系。记录有关F扩散系数的数据，以确定在各种实验条件下（θ= 0.12-0.25 cm cm（-3），pH = 7.3 +/- 0.2，孵育时间（ t）= 96-384 h，温度= 303 +/- 1.2 K，还研究了铝和钙（它们是土壤中F的强结合剂）对F扩散的影响。揭示了铝可能影响F在土壤中的扩散的双重作用，这可能证明在特定环境条件下植物对F的最终吸收至关重要[参考文献：17]

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