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利用放射性192 Ir示踪技术及近紫外 -可见吸收光谱分析 ,研究了阴离子交换树脂对海水中铱的吸附行为 ,建立了天然海水样品中铱的阴离子交换预浓集流程 ,回收率达 90 %。在超净条件下 ,采用此流程结合中子活化分析测得黄海近岸海水样品中的铱浓度为 2 .6× 10 - 14 g/mL。
The adsorption of iridium in seawater by anion exchange resin was studied by radioactivity 192 Ir tracer and near-ultraviolet-visible absorption spectroscopy. The preconcentration of anion of iridium in natural seawater was established. The recovery rate was 90%. Under ultra - clean conditions, the concentration of iridium in the samples from the coastal seawater of the Yellow Sea measured by this procedure combined with neutron activation analysis was 2.6 × 10 - 14 g / mL.