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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Vicious cycle of fluoride in semi-arid India - a health concern
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Vicious cycle of fluoride in semi-arid India - a health concern

机译：半干旱印度氟化物的恶性循环-健康问题

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摘要

Excess fluoride in groundwater-based drinking water supply is a growing concern in semi-arid tropical (SAT) regions of India. More than 16 states in India are facing the fluorosis problem. Several southern-peninsular states are experiencing monsoon climate condition, where the rainwater is harvested through tanks and used for agriculture. Presence of millions of such tank systems in these regions and their interception in the fluoride cycle has been studied here on a pilot level in several tanks. The results show that these tanks are probably acting as sinks and cause the enrichment of fluoride in groundwater. The leachable fluoride level of tank silt is found to be several fold more than that of normal land soil of the area. With the aging of the system and increase in thickness of fluorideladen tank silt, the rejuvenation of tank capacity through desilting and the practice of spreading silt in agricultural fields and further irrigating with fluorideenriched groundwater, make fluoride enter in a vicious cycle in the environment and food chain thus causing great concern. Safe disposal mechanisms of fluorideladen silt to end the cycle for safeguarding the groundwater used for drinking in the SAT regions are suggested here.
机译：在印度的半干旱热带地区，以地下水为基础的饮用水供应中过量的氟化物日益引起人们的关注。印度有16个以上的州正面临氟中毒问题。南部几个半岛州都处于季风气候状态，雨水通过水箱收集并用于农业。在这些区域中，已经在几个试点中研究了数百万个此类储罐系统的存在及其在氟化物循环中的拦截作用。结果表明，这些水箱可能充当水池，并导致地下水中氟化物的富集。储罐淤泥中可浸出的氟化物含量被发现为该地区正常陆地土壤的几倍。随着系统的老化和含氟储罐淤泥厚度的增加，通过除沙和在农业领域中散布淤泥以及进一步用富氟地下水灌溉的做法，储罐容量得以恢复活力，使氟化物进入环境和食物的恶性循环中连锁因此引起极大关注。本文提出了安全的氟化物淤泥处理机制，以终止用于维护SAT地区饮用水的循环。

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