Abstract
In an area dominated by clayey till the distribution of nitrate and the Fe(II)/Fe(III) ratio have been measured below arable land till a depth of 20 metres. In the subsoil the nitrate (NO− 3) occurs in measurable quantities in the upper oxidised zone (until c. 3 m) and the Fe(II)/Fe(III) ratio is low. At the transition to the reduced zone the nitrate content decreases to below the detection limit and the Fe(II)/Fe(III) ratio is considerably increased. The results indicate that the Fe(II) in the clay minerals is oxidised by the nitrate which thereby is reduced.
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References
Munsell Color Company, Munsell Soil Color Charts. (Macbeth division of Kollmorgen Corporation, Baltimore, 1976).
V. Ernstsen, in Nitrogen and phosphorus in ground water. Project abstracts of the Danish NPo research programme. Ministry of the Environment. National Agency of Environmental Protection, Denmark (1991) p. 19.
E. Murad and J.H. Johnston, in Mössbauer spectroscopy applied to inorganic chemistry, vol. 2, ed. G.J. Long (Plenum Press, New York, 1987) p. 507.
V. Ernstsen, P. P. Gravesen, B. Nilson, W. Brüsch, J. Fredericia og S. Genders, in Nitrogen and phosphorus in ground water. Project abstracts of the Danish NPo research programme. Ministry of the Environment. National Agency of Environmental Protection, Denmark (1991) p. 97.
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Ernstsen, V., Mørup, S. Nitrate reduction in clayey till by Fe(II) in clay minerals. Hyperfine Interact 70, 1001–1004 (1992). https://doi.org/10.1007/BF02397497
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DOI: https://doi.org/10.1007/BF02397497