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固相萃取法测定气溶胶中210Pb的可行性分析 |
Feasibility Study about SPE Analytical of 210Pb in Aerosol |
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DOI: |
中文关键词: 210Pb 固相萃取法 铅载体 气溶胶 |
英文关键词: 210Pb Solid phase extraction (SPE) Lead carrier Aerosol |
基金项目:四川省环境保护科技计划课题“放射性废物处理设施及周围辐射环境监测技术研究”基金资助项目(20160103) |
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中文摘要: |
采集大气气溶胶中的210Pb,气溶胶滤膜样品经高温灰化后加入206Pb作为210Pb分析的稳定同位素载体,用强碱性阴离子交换树脂在盐酸体系下吸附铅,将洗脱出的铅以硫酸铅沉淀形式称重。放置6个210Bi(T1/2=5 d)的半衰期后,至210Pb 和 210Bi平衡,在低本底α/β计数器上测定其子体210Bi的计数,计算得出原始样品中210Pb的活度浓度。该方法已广泛应用于四川省内环境质量监测和铀矿冶污染源监测等项目。 |
英文摘要: |
210Pb in atmospheric aerosol was collected by filter and made into ashes at high temperature, 206Pb was added as stable isotope carrier into the samples, Pb was adsorbed by strong alkaline anion exchange resin in hydrochloric acid system, the eluted Pb was weighted in the form of PbSO4 precipitate, after six half lives of 210Bi(T1/2=5 d)till 210Pb and 210Bi achieved balance, the activity concentration of Pb in original sample was calculated by counting its daughter 210Bi with low background alpha/beta counter. The method was widely used in environmental quality monitoring and pollution source monitoring in uranium mining industry in Sichuan. |
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