title: Selection and evaluation of sequential extraction procedures for the determination of phosphorus forms in lake sediment.
abstract: In order to achieve comparable measurements in the determination of phosphate forms in freshwater sediments, the Standards, Measurements and Testing Programme (formerly BCR) of the European Commission has launched a project the first step of which was to select and evaluate collaboratively existing extraction procedures. This was carried out through expert consultations and a literature survey, and was followed by the organisation of a first interlaboratory study for the evaluation of four sequential extraction schemes, one of which was selected as the most promising method for achieving comparability. This scheme, a modified version of the Williams protocol, was further tested in a second interlaboratory study. The so-called SMT extraction scheme seems promising and will provide, in the near future, a valuable tool for water managers in the field of lake restoration. It will be particularly helpful in estimating the stock of P potentially available, hence the risk of eutrophication due to internal P release.
authors.affiliation: Laboratoire Central des Ponts et Chaussées, Division Eau, BP 19, F-44340 Bouguenais, France.
authors.forename: V
authors.initials: V
authors.lastname: Ruban
authors.forename: J F
authors.initials: JF
authors.lastname: López-Sánchez
authors.forename: P
authors.initials: P
authors.lastname: Pardo
authors.forename: G
authors.initials: G
authors.lastname: Rauret
authors.forename: H
authors.initials: H
authors.lastname: Muntau
authors.forename: P
authors.initials: P
authors.lastname: Quevauviller
mesh_terms: D002623:Chemistry Techniques, Analytical / Q000379:methods; D004784:Environmental Monitoring / Q000379:methods; D019015:Geologic Sediments / Q000032:analysis*; D010758:Phosphorus / Q000032:analysis*; D014873:Water Pollutants / Q000032:analysis*
chemical_list: D014873:Water Pollutants; D010758:Phosphorus