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Development of a sequential extraction method for different forms of phosphorus in marine sediments

Ruttenberg, Kathleen C.·1992·Limnology and Oceanography

Abstract

A sequential extraction method (SEDEX) has been developed to separately quantify five sedimentary P reservoirs: loosely sorbed P; ferric iron‐bound P; authigenic carbonate fluorapatite + biogenic apatite + CaCO 3‐associated P; detrital apatite P; and organic P. The SEDEX method successfully separates two of the main categories of authigenic phosphate phases called upon most often as sedimentary sinks for diagenetically mobilized P: ferric oxyhydroxide‐associated P and authigenic carbonate fluorapatite (CFAP). It offers a means for separating authigenic CFAP from detrital apatite of igneous or metamorphic origin. The importance of this distinction is that CFAP represents an oceanic sink for reactive P, whereas detrital apatite does not. In addition, a means for reversing secondary adsorption of P onto residual solid surfaces during extraction has been developed. Extensive standardization of the SEDEX method for application to marine sediments has been performed with analogs for naturally occurring phosphatic phases.

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Metadata

Authors
Ruttenberg, K. C.
Venue
Limnology and Oceanography
Publisher
Wiley
Published
1992-11
Volume
37
Issue
7
Pages
1460-1482
ISSN
  • 0024-3590 (ISSN-L)
  • 1939-5590
OpenAlex
W1977457680
Cited by
1,169
References
1
FWCI
19.09
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Development of a sequential extraction method for different forms of phosphorus in marine sediments. https://app.cochat.ai/papers/10.4319/lo.1992.37.7.1460
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Ruttenberg, K. C. (1992). Development of a sequential extraction method for different forms of phosphorus in marine sediments. Limnology and Oceanography. https://doi.org/10.4319/lo.1992.37.7.1460

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