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薛光. 黄原酯棉富集分离—全差示光度法测定痕量银[J]. 岩矿测试, 1991, (4): 310-312.
引用本文: 薛光. 黄原酯棉富集分离—全差示光度法测定痕量银[J]. 岩矿测试, 1991, (4): 310-312.
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Fully Differential Spectrophotometry of Trace Silver in Geological Samples after Preconcentration with Xanthated Cotton Fiber[J]. Rock and Mineral Analysis, 1991, (4): 310-312.
Citation: Fully Differential Spectrophotometry of Trace Silver in Geological Samples after Preconcentration with Xanthated Cotton Fiber[J]. Rock and Mineral Analysis, 1991, (4): 310-312.
shu

黄原酯棉富集分离—全差示光度法测定痕量银

Fully Differential Spectrophotometry of Trace Silver in Geological Samples after Preconcentration with Xanthated Cotton Fiber

    摘要
  • 摘要: 在5—35％HClO_4介质中,0.1g黄原酯棉可定量吸附500μg Ag,灰化解脱后Ag回收率在99％以上。Ag-金试剂-OP络合物的显色条件是:pH为4.5—6.5,最大吸收波长505nm,摩尔吸光系数1.0×10~5,络合物组成是Ag:金试剂=1:4,Ag量在0—10μg/25ml范围内符合比尔定律。采用全差示分光光度法测定地质样品中的Ag,操作简单快速、灵敏度高、选择性好、测定范围宽.

     

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