Data/hora: 09/06/2024 08:35:41

Provedor de dados: | 5
País: | France
Título: | Spectrophotometric determination of phosphate in matrices from sequential leaching of sediments
Autores: | Anschutz, Pierre; Deborde, Jonathan.
Data: | 2016-04
Ano: | 2016
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.
Tipo: | Text
Idioma: | Inglês

Identificador:

https://archimer.ifremer.fr/doc/00375/48616/49431.pdf

DOI:10.1002/lom3.10085

https://archimer.ifremer.fr/doc/00375/48616/

Editor: | Wiley-blackwell
Formato: | application/pdf
Fonte: | Limnology And Oceanography-methods (1541-5856) (Wiley-blackwell), 2016-04 , Vol. 14 , N. 4 , P. 245-256

Fonte:

2016 Association for the Sciences of Limnology and Oceanography

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