吸着濃縮/原子吸光法による環境試料中の鉛の定量

概要

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1-Phenyl-3-methyl-4-stearoyl-5-pyrazolone(C_<18>) loaded on a porous polymer resin (C_<18>/SP207) was prepared for the determination of lead in environmental samples. Lead(II) was quantitatively retained on C_<18>/SP2O7 from an aqueous solution of pH>4.7 in the batch experiment. In the column experiment, lead(II) was quantitatively retained with 2.0g of C_<18>/SP207 when the flow rate of sample solution was lower than 7 ml/min. Lead(II) retained on C_<18>/SP207 was completely eluted with 2 M hydrochloric acid. The recovery from 20〜3000 ml of sample solution containing 400 μg of lead was higher than 96%. Alkali and alkaline earth metal elements, chloride and other ions had no effect on the recovery. The method was applied to the determination of lead in several salt samples and one of seawater. The recoveries of lead(II) added to these samples were approximately 100%.
1994-11-05