Soil Redox Potential: Importance, Field Measurements, and Observations

Fiedler, Sabine; Vepraskas, M. J.; Richardson, J. L.

doi:10.1016/s0065-2113(06)94001-2

Cited by 230 publications

(193 citation statements)

References 125 publications

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“…As the redox potential of most waterlogged soils tends to approach 0 V, Fe II is the predominant Fe species in a solution as in flooded soil dedicated for rice cultivation. In this condition, like in paddy soils, the benefit for plants could derive from the high Fe II solubility (about three orders of magnitude greater than Fe III ;Fiedler et al 2007) and thus able to guarantee higher levels of Fe availability for plants. However, in cultivated soils, due to their redox fluctuation, most of soluble Fe is present in the Fe III form with the exception of poorly drained soils, where the quantity of its Fe II form could reach sufficient levels for plant uptake (Lindsay 1979(Lindsay , 1988.…”

Section: Redox Processesmentioning

confidence: 99%

Review on iron availability in soil: interaction of Fe minerals, plants, and microbes

et al. 2013

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Section: Redox Processesmentioning

confidence: 99%

Review on iron availability in soil: interaction of Fe minerals, plants, and microbes

et al. 2013

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“…The value of soil redox potential depends on the dissolved oxygen content in the pore water and provides some information about the conditions in which the reducing bacteria of the soil could grow sulfate [53,54]. Low values of redox potential may suggest that conditions are favorable for anaerobic microbiological activity [55].…”

Section: Redox Potentialmentioning

confidence: 99%

Methods to Evaluate Corrosion in Buried Steel Structures: A Review

Arriba-Rodriguez

Balsera

Fernández

et al. 2018

Metals

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Around the world, there are thousands of metal structures completely or partially buried in the soil. The main concern in their design is corrosion. Corrosion is a mechanism that degrades materials and causes structural failures in infrastructures, which can lead to severe effects on the environment and have direct impact on the population health. In addition, corrosion is extremely complex in the underground environment due to the variability of the local conditions. The problem is that there are many methods to its evaluation but none have been clearly established. In order to ensure the useful life of such structures, engineers usually consider an excess thickness that increases the economic cost of manufacturing and does not satisfy the principles of efficiency in the use of resources. In this paper, an extended revision of the existing methods to evaluate corrosion is carried out to optimize the design of buried steel structures according to their service life. Thus, they are classified into two categories depending on the information they provide: qualitative and quantitative methods. As a result, it is concluded that the most exhaustive methodologies for estimating soil corrosion are quantitative methods fed by non-electrochemical data based on experimental studies that measure the mass loss of structures.

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“…Literature on the subject is sometimes controversial, as shown by numerous reviews (Bartlett and James 1993;De Mars and Wassen 1999;Fiedler et al 2007;Gantimurov 1969;Greenland and Hayes 1981;Kaurichev and Orlov 1982;Kovda 1973;Rabenhorst et al 2009;Snakin et al 2001;Unger et al 2008;Zakharievsky 1967). These reviews reported two main problems: (i) the quality and the reliability of the equipment, especially for Eh, as different types of electrodes have been developed and as leaks or polarization of the electrodes can occur and distort the measurements; and (ii) the high spatial and temporal variability of soil Eh and pH, and consequently, the limited reliability of sampling and analysis methods, which needs to be carefully addressed.…”

Section: Eh and Ph Measurementmentioning

confidence: 99%

“…Major progress has been made in the development of Eh electrodes since Remezov measured the Eh in soil for the first time in 1929. Recommendations have been developed for the selection and utilization of Eh electrodes (Fiedler et al 2007;Snakin et al 2001). However, careful attention should still be given to minimize the risk of measurement distortion and proper characterization of the variability of Eh and pH is still needed to standardize sampling and measuring methods on various scales.…”

Section: Eh and Ph Measurementmentioning

confidence: 99%

Redox potential (Eh) and pH as drivers of soil/plant/microorganism systems: a transdisciplinary overview pointing to integrative opportunities for agronomy

2012

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Background Oxidation-reduction and acid-base reactions are essential for the maintenance of all living organisms. However, redox potential (Eh) has received little attention in agronomy, unlike pH, which is regarded as a master variable. Agronomists are probably depriving themselves of a key factor in crop and soil science which could be a useful integrative tool. Scope This paper reviews the existing literature on Eh in various disciplines connected to agronomy, whether associated or not with pH, and then integrates this knowledge within a composite framework. Conclusions This transdisciplinary review offers evidence that Eh and pH are respectively and jointly major drivers of soil/plant/microorganism systems. Information on the roles of Eh and pH in plant and microorganism physiology and in soil genesis converges to form an operational framework for further studies of soil/plant/microorganism functioning. This framework is based on the hypothesis that plants physiologically function within a specific internal Eh-pH range and that, along with microorganisms, they alter Eh and pH in the rhizosphere to ensure homeostasis at the cell level. This new perspective could help in bridging several disciplines related to agronomy, and across micro and macro-scales. It should help to improve cropping systems design and management, in conventional, organic, and conservation agriculture.

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Soil Redox Potential: Importance, Field Measurements, and Observations

Cited by 230 publications

References 125 publications

Review on iron availability in soil: interaction of Fe minerals, plants, and microbes

Review on iron availability in soil: interaction of Fe minerals, plants, and microbes

Methods to Evaluate Corrosion in Buried Steel Structures: A Review

Redox potential (Eh) and pH as drivers of soil/plant/microorganism systems: a transdisciplinary overview pointing to integrative opportunities for agronomy

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