Journal article
Interrelations between iron extractability and phosphate sorption in reflooded air-dried sediments
Hydrobiologia, Vol.472(1/3), pp.39-44
2002
Abstract
To understand the effects of drying on phosphorus sorption properties of wetland sediment, the acid ammonium oxalate and citrate-dithionite-bicarbonate (CDB) extractions were applied to sediments from seven shallow lakes near Perth, Western Australia. Air-drying generally led to a marked increase in oxalate- and CDB-extractable Fe, but not in extractable-Al which varied less than 2%. Air-drying also induced changes in equilibrium concentration, labile potential and sorption capacity of phosphorus in reflooded sediments. These were accompanied by changes in pH, turbidity, E440 and soluble Fe3+ in the water. The FeOx/FeCDB ratios of wet and air-dried sediments suggested an increase in iron crystallinity upon drying, correlated with the decrease in P-sorption capacity (R2= 0.72, p < 0.05).
Details
- Title
- Interrelations between iron extractability and phosphate sorption in reflooded air-dried sediments
- Authors/Creators
- S. Qiu (Author/Creator)A.J. McComb (Author/Creator)
- Publication Details
- Hydrobiologia, Vol.472(1/3), pp.39-44
- Publisher
- Kluwer Academic Publishers
- Identifiers
- 991005540841307891
- Murdoch Affiliation
- School of Environmental Science
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.2 Marine Biology
- 3.2.216 Lake Ecosystems
- Web Of Science research areas
- Marine & Freshwater Biology
- ESI research areas
- Plant & Animal Science