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Selenium is an essential micronutrient but its role in oceanic biology is relatively unknown. Whilst this essentiality has been shown in laboratory work for some marine phytoplankton … species, the concentration, chemical species and incorporation methods are unknown.
A solid-phase extraction method based on an ion-exchange retention mechanism … has been used for in-line preconcentration of inorganic anions prior to … their separation by capillary electrophoresis (CE).
Modern methods of preconcentration are investigated with … regard to the determination of selenium species in natural … (especially ocean) waters. The low concentration of selenium … in surface waters means that it is often present at levels below the limits of detection (LODs)…