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Sequential fractionation of sediment phosphate

Sequential fractionation of sediment phosphate Abstract By means of sequential extractions with Ca-NTA and EDTA, a separation was performed between Fe(OOH) ≈ P and CaC03≈P in a few sediments; the remaining fraction, considered to be organic phosphate, was quantified as well. We found that with the commonly used method of extraction with NaOH and H2S04, less Fe(OOH) ≈ P and much more CaC03 ≈ P was found than with the chelating extractants. The organic phosphate pool in live and dead algal material and in some mud samples was partly hydrolysed and therefore recovered as inorganic phosphates with classical extractions. The difference between chelating extractants and the classical ones is discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Hydrobiologia Springer Journals

Sequential fractionation of sediment phosphate

de Groot, C. J.; Golterman, H. L.
Hydrobiologia , Volume 192 (2): 6 – Mar 1, 1990
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References (16)

Publisher
Springer Journals
Copyright
1990 Kluwer Academic Publishers
ISSN
0018-8158
eISSN
1573-5117
DOI
10.1007/BF00006010
Publisher site
See Article on Publisher Site

Abstract

Abstract By means of sequential extractions with Ca-NTA and EDTA, a separation was performed between Fe(OOH) ≈ P and CaC03≈P in a few sediments; the remaining fraction, considered to be organic phosphate, was quantified as well. We found that with the commonly used method of extraction with NaOH and H2S04, less Fe(OOH) ≈ P and much more CaC03 ≈ P was found than with the chelating extractants. The organic phosphate pool in live and dead algal material and in some mud samples was partly hydrolysed and therefore recovered as inorganic phosphates with classical extractions. The difference between chelating extractants and the classical ones is discussed.

Journal

Hydrobiologia – Springer Journals

Published: Mar 1, 1990

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