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hanxiao9985木虫 (小有名气)
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[求助]
摘要翻译求助，中译英，谢谢！
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氟具有很高的化学活性和生物活性，不管对人，还是动植物以及生态体系都是危害极大的污染物之一。同时氟是重要的化工原料，氟及氟化物家族几乎成了各行各业的生产原料添加剂、制冷剂等重要物质。它的这种双面性被现在许多学者所关注、研究。 本文介绍了氟及氟化钾的基本性质，氟元素对人体健康的影响，工业氟污染来源以及对我国地表水氟污染对自然人类造成的深远影响。对于氟化钾的制备方法从多角度进行了阐述。本论文涉及的是将废料中的氯离子转化为氟离子并测定工业废料中的氟离子含量，在这个过程中会用到酸碱滴定，氟离子电极电位分析法。 近几年来由于中国含氟医药、含氟农药及含氟染料的较快发展，特别是含氟农药已被国家列为重点产品，所以本论文研究的对氟化钾的回收是很有价值的。 关键词：氟化物；工业氟；氟化钾回收；氟离子电极电位分析法 |
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hanxiao9985: 金币+200, 翻译EPI+1, ★★★★★最佳答案, 谢谢， 辛苦了！ 2013-06-08 20:42:32
hanxiao9985: 金币+200, 翻译EPI+1, ★★★★★最佳答案, 谢谢， 辛苦了！ 2013-06-08 20:42:32
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Fluoride has the very high chemical activity and biological activity, which is one of the great harm of pollutants，no matter to people, flora, fauna or ecological system. At the same time, fluorine and its family almost become the important chemical raw materials additives and other important refrigerant material for industry. Recently, it's this duality that many scholars concern and research about. This paper introduces the basic characteristics of fluoride and potassium fluoride, fluoride effects on human health, industrial fluorine pollution source and fluorine pollution of surface water in China's far-reaching effects on the human nature. And explaining the preparation of potassium fluoride with multiple perspectives. This paper deals with fluorine ion and chloride ion in the waste which can be converted to determination of fluoride ion content in industrial waste, using acid and alkali titration and fluorine ion electrode potential analysis. Nowadays, due to China's containing fluorine medicine, containing fluorine agrochemical, containing fluorine dye and rapid development, especially the fluorine-containing pesticides have been listed as national key product, so this paper studies the recycling of potassium fluoride is of great value. Key words: fluoride; Industrial fluorine; Potassium fluoride recovery; Fluorine ion electrode potential analysis 希望对楼主有用！ |
3楼2013-06-08 19:36:53
李加伟
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2楼2013-06-08 18:20:20
bhcsu
金虫 (小有名气)
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Fluorine has been considered as one of the harmful contaminants to either people, animals and plants or ecosystem because of its high chemical and biological activity. On the other hand, as important chemical raw materials, fluorine and fluorides almost become indispensible substances of additives in starting material and cryogen in all trades and professions. Its dual natures as mentioned have been concerned and investigated by many scholars. Foundamental properties of fluorine and potassium fluoride and the effects of fluorine on human healty were presented in this paper, so were the source of contamination from industial fulorine and the far-reaching influence of fulorine contamination of surface water in our country on nature and mankind. The methods of preparing potassium fluoride have been discussed from various perspectives. What is concerned in this paper is to convert the chloride ion in the waste material to fluoride ion and measure the content of the fuloride ion, during which the acid-base titration and fluoride ion electrode potential analysis methods were employed. In recent years, there is a rapid development in medicines, pesticides and dyes containing fluoride in China, especially that the pesticides with fluoride have been listed as key products by our country. Thus, it is of great value to investigate the recycling of potassium fluoride. Key words: Fluoride; Industrial fluorine; Recycling of potassium fluoride; Fluoride ion electrode potential analysis method |
4楼2013-06-08 20:09:40
