強酸性陽イオン交換樹脂によるヒ素(III),ヒ素(V),メタンアルソン酸塩及びジメチルアルシン酸の分画

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Behavior of arsenous, arsenic, disodium methanearsonate (DSMA) and dimethylarsinic acid (DMAA) with a strong-acid cation-exchange resin was investigated. Dowex 50W×8 { (50〜100) mesh, hydrogen from} was used. A mixed solution, modified to pH 2, of these arsenicals was applied to the top of a short column (1.5cm×12cm) connected to a long column (1.9cm×ll8cm) and then eluted at a flow rate of (9〜11)cm^3 cm^<-2> h^<-1>. The effluent was monitored for arsenic by using atomic absorption spectrophotometer equipped with graphite furnace atomizer. Arsenic, arsenous and DSMA were separately eluted with water in this order from the long column. DMAA held strongly on the short column was eluted with aqueous ammonia after the connection of the two columns was cut. Almost 100 % of these arsenicals was recovered in the effluents. From an aqueous extract from a brown seaweed, Hizikia fusiforme, 4 arsenic peaks corresponding to the reference arsenic, arsenous, DSMA and DMAA were obtained by the method. This method is effectively applicable for studying chemical forms and metabolic fate of arsenic in marine organisms.
社団法人日本分析化学会の論文
1980-03-05