キレート配位子固定シリカゲル捕集-原子吸光分析法による無機及び有機水銀の分別定量

概要

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A method for the determination of pg ml^<-1> levels of inorganicmercury and organomercuric compounds in water has been developed. They were selectively preconcentrated by using two small sized quartz columns packed with 50 mg of silica gels with immobilized iminoacetate (SIIA) and dithiocarbamate (SIDT), respectively. The sample reservoir and the columns were connected with tygon tubing, and the sample (0.1 M HCl solution) was passed through the two columns at a flow rate of 10ml min^<-1>. The Hg(II) and organomercurys were respectively concentrated on the upper column (SIIA) and the lower column (SIDT). The columns were then inserted in the furnace of Hitachi Zeeman effect mercury analyzer 501, and the individual concentrations of Hg(II) and organomercurys were determined. Various foreign salts and metal ions did not interfere with the recovery of traces of Hg(II) and organomercurys. The proposed method was applied for the determination of Hg(II) and organomercurys at pg ml ^<-1> concentration level in a synthetic sea water sample. The detection limit of this method was 10 pg ml^<-1> when 100ml of sample solution was applied, with a relatively standard deviation of less than 4 %.
社団法人日本分析化学会の論文
1982-07-05