Contrasting experimental manipulations of the acidity of catchment drainage water: Effects on interactions between humic substances, iron and phosphate
Contrasting experimental manipulations of the acidity of catchment drainage water: Effects on interactions between humic substances, iron and phosphate
Abiotic interactions occurring between dissolved humic substances, iron, and phosphate were investigated by addition of radioisotope tracers (55FeCl3 and PO43?) to surface water samples collected from catchments subjected to contrasting pH manipulations. Increases from pH 4 to circumneutral pH due to catchment liming resulted in increases in the proportions of added ionic 55Fe and 32P recovered in higher molecular size fractions following gel chromatography. Changes in ionic composition due to catchment liming did not result in marked changes in redistributions of added 55Fe and 32P. Comparatively small differences between the pH values and ionic compositions of the control and artificially acidified subcatchments of a humic lake did not result in substantial changes in the redistributions of added 55Fe and 32P.
611-618
Shaw, Peter J.
935dfebf-9fb6-483c-86da-a21dba8c1989
Jones, Rodger I.
7a2e7099-517d-4e0f-bdfe-407504d0ef7c
De Haan, Henk
bde49bc5-b4fe-4dfc-8c83-7f6a6a652254
1996
Shaw, Peter J.
935dfebf-9fb6-483c-86da-a21dba8c1989
Jones, Rodger I.
7a2e7099-517d-4e0f-bdfe-407504d0ef7c
De Haan, Henk
bde49bc5-b4fe-4dfc-8c83-7f6a6a652254
Shaw, Peter J., Jones, Rodger I. and De Haan, Henk
(1996)
Contrasting experimental manipulations of the acidity of catchment drainage water: Effects on interactions between humic substances, iron and phosphate.
[in special issue: The HUMEX/HUMOR Project and Humic Substances]
Environment International, 22 (5), .
(doi:10.1016/0160-4120(96)00052-9).
Abstract
Abiotic interactions occurring between dissolved humic substances, iron, and phosphate were investigated by addition of radioisotope tracers (55FeCl3 and PO43?) to surface water samples collected from catchments subjected to contrasting pH manipulations. Increases from pH 4 to circumneutral pH due to catchment liming resulted in increases in the proportions of added ionic 55Fe and 32P recovered in higher molecular size fractions following gel chromatography. Changes in ionic composition due to catchment liming did not result in marked changes in redistributions of added 55Fe and 32P. Comparatively small differences between the pH values and ionic compositions of the control and artificially acidified subcatchments of a humic lake did not result in substantial changes in the redistributions of added 55Fe and 32P.
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Published date: 1996
Additional Information:
Shaw P. J., Jones R.I., de Haan H., (1996). "Contrasting experimental manipulations of the acidity of catchment drainage water: Effects on interactions between humic substances, iron and phosphate." Environmental International, 22, 611-618
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Local EPrints ID: 75745
URI: http://eprints.soton.ac.uk/id/eprint/75745
PURE UUID: 46751459-28c2-45dc-933d-59b4fb9e8388
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Date deposited: 11 Mar 2010
Last modified: 14 Mar 2024 02:37
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Author:
Rodger I. Jones
Author:
Henk De Haan
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