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Simultaneous separation of 17 inorganic and organic arsenic compounds in marine biota by means of high-performance liquid chromatography/inductively coupled plasma mass spectrometry.
Kohlmeyer, Ute; Kuballa, Jürgen; Jantzen, Eckard.
Afiliação
  • Kohlmeyer U; GALAB, Max-Planck-Str. 1, D-21502 Geesthacht, Germany. Ute.Kohlmeyer@galab.de
Rapid Commun Mass Spectrom ; 16(10): 965-74, 2002.
Article em En | MEDLINE | ID: mdl-11968129
ABSTRACT
A method using high-performance liquid chromatography/inductively coupled plasma mass spectrometry (HPLC/ICP-MS) has been developed to determine inorganic arsenic (arsenite, arsenate) along with organic arsenic compounds (monomethylarsonic acid, dimethylarsinic acid, arsenobetaine, arsenocholine, trimethylarsine oxide, tetramethylarsonium ion and several arsenosugars) in fish, mussel, oyster and marine algae samples. The species were extracted by means of a methanol/water mixture and a dispersion unit in 2 min, with extraction efficiencies ranging from 83 to 107% in the different organisms. Up to 17 different species were determined within 15 min on an anion-exchange column, using a nitric acid gradient and an ion-pairing reagent. As all species are shown in one chromatogram, a clear overview of arsenic distribution patterns in different marine organisms is given. Arsenobetaine is the major compound in marine animals whereas arsenosugars and arsenate are dominant in marine algae. The method was validated with CRM DORM-2 (dogfish muscle). Concentrations were within the certified limits and low detection limits of 8 ng g(-1) (arsenite) to 50 ng g(-1) (arsenate) were obtained.
Assuntos
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Base de dados: MEDLINE Assunto principal: Ostreidae / Arsênio / Arsenicais / Bivalves / Eucariotos / Peixes Limite: Animals Idioma: En Ano de publicação: 2002 Tipo de documento: Article
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Base de dados: MEDLINE Assunto principal: Ostreidae / Arsênio / Arsenicais / Bivalves / Eucariotos / Peixes Limite: Animals Idioma: En Ano de publicação: 2002 Tipo de documento: Article