A sensitive atomic absorption spectrometric method for copper employing the direct introduction of chelating resin into a carbon tube atomizer.

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概要

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• A new and simple method for the determination of ppb levels of copper by electrothermal atomic absorption spectrometry was established. The main feature of the proposed method is that chelating resin, a preconcentration agent for copper, is introduced directly as a "resin-suspension" into the carbon tube atomizer without drying and weighing of the resin. To a 250 cm<SUP>3</SUP> sample solution containing up to 1.0 μg of copper, 0.10 g of chelating resin (below 400 mesh) is added, and the mixture is stirred for about 20 min. After the separation of the resin from the aqueous phase through a membrane filter, 5.0 cm<SUP>3</SUP> of resin-suspension is prepared by adding water to the resin. Then, 10 μdm<SUP>3</SUP> (resin: 0.2 mg) of the suspension is introduced into an atomizer, and the copper peak-height is measured under the optimum operating conditions. The calibration graph was linear over the concentration range from 0.1 ppb to 4.0 ppb of copper. The relative standard deviation was 2.3% from 10 repeated measurements; a mean value of 1.08 ppb copper was obtained for a sea water sample.

• 公益社団法人 日本化学会の論文

著者

• Isozaki Akinori

  Department Of Industrial Chemistry College Of Science And Technology Nihon University

• UTSUMI Satori

  Department of Industrial Chemistry, College of Science and Technology, Nihon University

• Utsumi Satori

  Department Of Industrial Chemistry College Of Science And Technology Nihon University

• Soeda Naoki

  Department of Industrial Chemistry, College of Science and Technology, Nihon University

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• A sensitive atomic absorption spectrometric method for copper employing the direct introduction of chelating resin into a carbon tube atomizer.

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