title: Selenium species in selenium fortified dietary supplements.
abstract: This article presents a study of dietary supplements available on the Polish market. The supplements comprised a large group of products with selenium content declared by the producer. The study involved determination of dissolution time under different conditions and solubility as well as content and speciation of selenium. The total content was determined as well as organic selenium and the inorganic forms Se(IV) and Se(VI). The organic selenium content was calculated as the difference between total Se and inorganic Se. The values obtained were compared with producers' declarations. The work is the first such study of selenium supplements available on the market of an EU Member State.
authors.affiliation: Adam Mickiewicz University, Faculty of Chemistry, Department of Analytical Chemistry, 89B Umultowska Street, 61-614 Poznań, Poland. Electronic address: pnied@amu.edu.pl.
authors.forename: Przemyslaw
authors.initials: P
authors.lastname: Niedzielski
authors.affiliation: Adam Mickiewicz University, Faculty of Chemistry, Department of Analytical Chemistry, 89B Umultowska Street, 61-614 Poznań, Poland.
authors.forename: Monika
authors.initials: M
authors.lastname: Rudnicka
authors.affiliation: Adam Mickiewicz University, Faculty of Chemistry, Department of Analytical Chemistry, 89B Umultowska Street, 61-614 Poznań, Poland.
authors.forename: Marcin
authors.initials: M
authors.lastname: Wachelka
authors.affiliation: Adam Mickiewicz University, Faculty of Chemistry, Department of Analytical Chemistry, 89B Umultowska Street, 61-614 Poznań, Poland.
authors.forename: Lidia
authors.initials: L
authors.lastname: Kozak
authors.affiliation: Adam Mickiewicz University, Faculty of Chemistry, Department of Analytical Chemistry, 89B Umultowska Street, 61-614 Poznań, Poland.
authors.forename: Magda
authors.initials: M
authors.lastname: Rzany
authors.affiliation: Adam Mickiewicz University, Faculty of Chemistry, Department of Analytical Chemistry, 89B Umultowska Street, 61-614 Poznań, Poland.
authors.forename: Magdalena
authors.initials: M
authors.lastname: Wozniak
authors.affiliation: Adam Mickiewicz University, Faculty of Chemistry, Department of Analytical Chemistry, 89B Umultowska Street, 61-614 Poznań, Poland.
authors.forename: Zaneta
authors.initials: Z
authors.lastname: Kaskow
mesh_terms: D019587:Dietary Supplements / Q000032:analysis*; D005062:European Union; D005527:Food, Fortified / Q000032:analysis*; D007881:Legislation, Food; D012643:Selenium / Q000032:analysis*; D012995:Solubility
chemical_list: D012643:Selenium
keywords: Dietary supplements; HPLC–HG-AAS; Selenium; Selenocysteine (PubChem CID: 6326983); Selenomethionine (PubChem CID: 15103); Sodium selenate (PubChem CID: 25960); Sodium selenite (PubChem CID: 24934); Speciation; Supplementation