Flow-Injection Determination of Copper(II) Based on Its Catalytic Effect on the Oxidative Coupling of 3-Methyl-2-benzothiazolinone Hydrazone with N-Ethyl-N-(2-hydroxy-3-sulfopropyl)-3,5-dimethoxyaniline in a Micellar Medium.
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- KAWASHIMA Takuji
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Tsukuba
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- ITABASHI Hideyuki
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Tsukuba
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- TESHIMA Norio
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Tsukuba
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- KURIHARA Makoto
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Tsukuba
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- NAKANO Shigenori
- Department of Environmental Sciences, Faculty of Education and Regional Sciences, Tottori University
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A highly sensitive flow-injection spectrophotometric method has been developed for the determination of copper(II). It is based on the catalytic effect of copper(II) on the oxidative coupling reaction of 3-methyl-2-benzothiazolinone hydrazone with N-ethyl-N-(2-hydroxy-3-sulfopropyl)-3,5-dimethoxyaniline to form a red compound (λmax=525 nm) in the presence of hydrogen peroxide and pyridine as an activator. A higher sensitivity and sampling rate were achieved by adding ben-zyldimethyltetradecylammonium chloride (Zephiramine) as a surfactant to this reaction system. The calibration graph for copper(II) was linear over the range 0.005 - 0.75 ng cm-3 at a rate of 40 samples h-1. The relative standard deviations for ten determinations of 0.5 and 0.05 ng cm-3 were 0.21 and 2.0%, respectively. The proposed method was successfully applied to the determination of copper in pepperbush.
収録刊行物
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- Analytical Sciences
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Analytical Sciences 15 (9), 835-839, 1999
社団法人 日本分析化学会
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詳細情報 詳細情報について
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- CRID
- 1390282679231260928
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- NII論文ID
- 130004440138
- 10004707358
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- NII書誌ID
- AA10500785
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- COI
- 1:CAS:528:DyaK1MXlvV2qt7Y%3D
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- ISSN
- 13482246
- 09106340
- http://id.crossref.org/issn/09106340
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- NDL書誌ID
- 4868022
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 使用不可