Atomic absorption spectrophotometric determination of copper(I) after extraction of its ternary complex with 3-(4-phenyl-2-pyridyl)-5,6-diphenyl-1,2,4-triazine and tetraphenylborate into molten naphthalene.
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概要
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A preferable atomic absorption spectrophotometric method has been established for trace determination of copper(I) <I>via</I> extraction of its ion-associated complex with 3-(4-phenyl-2-pyridyl)-5,6-diphenyl-1,2,4-triazine and tetraphenylborate into molten naphthalene. The optimum pH range for the extraction is 1.6–8.2. Solid naphthalene containing the copper(I) complex is separated by filtration and dissolved in <I>N</I>,<I>N</I>-dimethylformamide. The absorbance is measured at 324.7 nm. Beer's law is obeyed in the concentration range 2.5–80 μg of copper in 10 cm<SUP>3</SUP> <I>N</I>,<I>N</I>-dimethylformamide solution. Ten repeat analyses on a sample containing 35 μg of copper give a mean absorbance of 0.205 with a standard deviation of 0.0017 and a relative standard deviation of 0.83%. The method has been successfully applied to determination of copper in standard reference materials and biological samples.
- 公益社団法人 日本化学会の論文
著者
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Nagahiro Tohru
Department of Chemistry, Himeji Institute of Technology
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Uesugi Katsuya
Department of Chemistry, Himeji Institute of Technology
関連論文
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- Atomic absorption spectrophotometric determination of copper(I) after extraction of its ternary complex with 3-(4-phenyl-2-pyridyl)-5,6-diphenyl-1,2,4-triazine and tetraphenylborate into molten naphthalene.