【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。更多还原

【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%.更多还原