| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Spectrophotometric determination of phosphate in matrices from sequential leaching of sediments
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| Autores: |
Anschutz, Pierre
Deborde, Jonathan
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| Data: |
2016-04
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| Ano: |
2016
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| Resumo: |
The speciation of Phosphorus (P) in geologic materials can inform diverse investigations in such as aquatic biogeochemistry, soil sciences, and paleo-oceanography. Here, we describe in detail a set of sequential extraction schemes to measure P concentrations from several operationally defined phases: pore water, exchangeable or loosely sorbed P, Fe-bound P, P associated with biogenic apatite, P associated with authigenic apatite and carbonate forms, P associated with detrital apatite and inorganic forms, and organic P. The two benefits of the procedures we describe compared to prior methodological studies are: (1) fast, simple and inexpensive colorimetric methods have been developed for P determination in all the different matrices; and (2) the Fe-bound phosphorus pool is separated into two fractions, allowing the P associated with most reactive Fe-fraction to be distinguished from P bound to the remainder of the Fe-oxides. Adaptations of these procedures to optimize the characterization of P pools in a range of material types are also outlined.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00375/48616/49431.pdf
DOI:10.1002/lom3.10085
https://archimer.ifremer.fr/doc/00375/48616/
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| Editor: |
Wiley-blackwell
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| Formato: |
application/pdf
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| Fonte: |
Limnology And Oceanography-methods (1541-5856) (Wiley-blackwell), 2016-04 , Vol. 14 , N. 4 , P. 245-256
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| Direitos: |
2016 Association for the Sciences of Limnology and Oceanography
info:eu-repo/semantics/openAccess
restricted use
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