Determination of selenium in biological samples by solvent extraction-graphite furnace atomic absorption spectrometry

Extraction system for solvent extraction-graphite furnace atomic absorption spectrometry

“…has heen developed. In a previous paper (10) the wlvent extraction system and its application to t h e determination of selenium in biological samples by graphite furnace AAS has been reported. T h e system consisted of three separate parts.…”

“…From t h e homogenate of mussels ( M y t i l u s e d u l i s ) from Tokyo Bay, a portion weighing ca. 10 g was taken, digested, and made u p t o 100 m L . -4liquots of the digest were extracted as stated in the preceding section.…”

“…One such system, the primary characteristic of which lies in the use of Teflon porous film as a separating medium, has been developed. In a previous paper (10) the solvent extraction system and its application to the determination of selenium in biological samples by graphite furnace AAS has been reported. The system consisted of three separate parts.…”

Determination of Selenium(IV, VI) by Heated Quartz Cell Atomic Absorption Spectrometry with Miniaturized Suction-Flow On-Line Prereduction/Hydride Generation System

“…The suction-flow system is considered to be rather convenient from the points of view of simplicity of operation and less expensive device. To get the same efficiency of hydride formation for selenium(IV) and selenium(VI), selenium(VI) is usually reduced to selenium(IV) prior to analysis by the batch method in which aqueous sample is mixed with dilute hydrochloric acid and boiled for several tens min.5, 6 Agemian and Thomson' showed a system of on-line prereduction for continuous hydride generation. However, the apparatus was so complicated that it is preferred to be modified to a simple one.…”