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液膜法富集痕量铅及其火焰原子吸收分光光度法测定 被引量:8

Liquid Membrane Enrichment of Trace Lead and Its Determination by Flame Atomic Absorption Spectrophotometry
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摘要 本文研究了以二(2-乙基已基)磷酸(P204)为流动载体。双丁二酰亚胺(蓝-113B)为表面活性剂,煤油为膜溶剂的液膜体系富集水溶液中痕量铅。选择H_2SO_4及硫脲为内相试剂,解析配合被P204迁移的Pb^(2+)。本法选择性好,回收率可达99%,十次间歇富集倍数可达10~2倍。 The liquid membrane method, as a new and highly effective separation technique, has been widely used and investigated in many fields. In this paper, the new liquid membrane system of P204-Blue-113B-liquid paraffin kerosene sulphuric acid and thiourea used to enrich trace lead in water. The best conditions for enrichment and influencing factors were studied. Combined with flame atomic absorption spectrophotometrya recovery of more than 99 percent was obtained Lead in water can be enriched up to 102 fold. According to the experiments liquid membrane enrichment mehtod is very effective and promising in the field of analytical chemistry.
出处 《分析试验室》 CAS CSCD 北大核心 1991年第1期32-34,共3页 Chinese Journal of Analysis Laboratory
基金 国家自然科学基金
关键词 液膜法 富集 分光光度法 煤油 P204, Blue-113B, Kerosen, thiourea Liquid membrane enrichment, lead.
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二级参考文献4

  • 1邵雅峰,全国第三届液膜学术报告会论文集,1987年
  • 2徐书绅,全国首届微量技术及痕量分析会议论文集,1986年
  • 3王宗孝,理化检验.化学分册,1986年,22卷,3期,165页
  • 4张维祥,东北师大学报,1988年,2期,99页

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