Chromium speciation by column chromatography using a direct current plasma atomic emission spectrometer
Chromium speciation by column chromatography using a direct current plasma atomic emission spectrometer
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使用直流等离子体原子发射光谱仪通过柱色谱法进行铬形态分析
DOI：
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发表时间：
1990
期刊：
影响因子：
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通讯作者：
S. V. Chandra
中科院分区：
文献类型：
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作者：
Shakeel Ahmad;R. Murthy;S. V. Chandra
已经开发出一种简单便捷的方法，用于在直接连接到直流等离子体原子发射光谱仪的氧化铝柱（内径10.0×4.0毫米）上分离合成水溶液中的三价铬和六价铬。在x - y绘图仪上记录的读数表明，两种铬形态都可以保留在柱上，然后分别用0.02 M硝酸（三价铬）和1.0 M氨溶液（六价铬）洗脱。通过让较大体积的样品通过柱子，采用所提出的方法分离后，也能够检测到低浓度的铬。对pH值影响的研究表明，在pH值3.0到5.5之间可实现最佳分离。
A simple and convenient method has been developed for the separation of CrIII and CrVI in synthetic aqueous solutions on an alumina column (10.0 × 4.0 mm i.d.) attached directly to a direct current plasma atomic emission spectrometer. The readings recorded on an x–y plotter demonstrate that both species of Cr can be retained on the column and then eluted with 0.02 M HNO3(CrIII) and 1.0 M ammonia solution (CrVI). Low concentrations of Cr can also be detected after separation with the proposed method by passing larger sample volumes through the column. A study of the effect of pH showed that the best separation was achieved between pH 3.0 and 5.5.