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液膜富集分光光度法测定水中痕量铬(Ⅵ)

Enrichment With Liquid Emulsion Membrane and Spectrophotometric Determination of Chromium ( Ⅵ ) in Water

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【作者】 李龙泉吴纯德郑化桂李亚栋

【Author】 Li Longquan , Wu Chunde, Zheng Huagui, Li Yadong (Department of Applied Chemistry, University of Science and Technology of China, Hefei 230026)

【机构】 中国科技大学应用化学系!合肥230026

【摘要】 本文研究了分离、富集Cr(Ⅵ)的最佳液膜组成和实验条件,确立了兰113B-TOA-煤油-液体石蜡-NaOH液膜体系。用本法富集、测定工业废水中的Cr(Ⅵ),富集倍数达75,相对标准偏差为1.1%,回收率99%以上。

【Abstract】 The liquid emulsion membrane technology has been applied to the enrichment of chromium in water for its determination. The optimum constituents of La113B-triocty-lamine-kerosene-liquid paraffin-NaOH liquid membrane system and the optimal conditions of enrichment were studied. An enrichment of over 75-fold was obtained for chromium. The method has been sucessfully applied to the determination of Cr in waste-water samples with relative standard deviation of less than 1.1% and recovery of over 99%.

【关键词】 液膜分光光度法
【Key words】 ChromiumLiquid membraneSpectrophotometry
  • 【文献出处】 分析化学 ,Chinese Journal of Analytieal Chemistry , 编辑部邮箱 ,1994年02期
  • 【分类号】O657.3
  • 【被引频次】14
  • 【下载频次】139
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