氧化还原电位作为地表水化学和生物状态的重要特征(综述)

IF 1.3 4区 环境科学与生态学 Q3 ECOLOGY
P. Linnik, V. Osadchyi, N. Osadcha, R. Linnik
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引用次数: 0

摘要

摘要:这篇综述总结了氧化还原电位(Eh)作为地表水影响其生态和化学状态的基本特征的文献数据。我们考虑了Eh对“海底沉积物-水”系统中营养物质、金属和类金属迁移的影响及其在水体二次污染中的作用。缺氧、厌氧条件和Eh减少会导致营养物质浓度增加,锰和铁的形式减少,因为它们从底部沉积物迁移到水生环境。这反过来又加剧了水体的富营养化。我们回顾了有关金属和类金属化合物转化的数据,这些转化取决于氧化还原过程的强度,从而产生它们的生物利用度和对水生生物的毒性。腐殖物质作为最常见的一组溶解的地表水有机物质,表现出还原特性,并影响共存的金属和类金属物种。在气候变化下,地表水中氧化还原过程的强度将增加。考虑到水体内部污染的可能性,在制定减少地表水主要含营养物质和金属负荷的措施时,需要考虑元素的氧化还原转化问题。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Redox potential as an important characteristic of the chemical and biological state of surface waters (review)
ABSTRACT This review summarises literature data on redox potential (Eh) as an essential characteristic of surface waters affecting their ecological and chemical state. We consider the influence of Eh on the migration of nutrients, metals, and metalloids in the ‘bottom sediments – water’ system and its role in the secondary pollution of water bodies. Hypoxia, anaerobic conditions, and reduced Eh leads to an increase in the concentration of nutrients, reduced forms of manganese and iron, due to their migration from bottom sediments to the aquatic environment. This, in turn, contributes to enhanced eutrophication of water bodies. We reviewed the data on the transformation of metal and metalloid compounds depends on the intensity of redox processes resulting their bioavailability, and toxicity to aquatic organisms. Humic substances, as the most common group of dissolved surface water organic substances, exhibit reducing properties and affect the coexisting metals and metalloid species. The intensity of redox processes in surface water will increase under climate change. The issue of redox transformation of elements will need to be considered in the context of developing measures to reduce surface water loading with primarily nutrients and metals, taking into account the possibility of internal pollution of water bodies.
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来源期刊
Chemistry and Ecology
Chemistry and Ecology 环境科学-环境科学
CiteScore
4.20
自引率
16.00%
发文量
58
审稿时长
3.7 months
期刊介绍: Chemistry and Ecology publishes original articles, short notes and occasional reviews on the relationship between chemistry and ecological processes. This journal reflects how chemical form and state, as well as other basic properties, are critical in their influence on biological systems and that understanding of the routes and dynamics of the transfer of materials through atmospheric, terrestrial and aquatic systems, and the associated effects, calls for an integrated treatment. Chemistry and Ecology will help promote the ecological assessment of a changing chemical environment and in the development of a better understanding of ecological functions.
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