Mizuguchi, Hitoshi Tokushima University Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Taniguchi, Yusuke Tokushima University
Suherman, Suherman Universitas Gadjah Mada
Morita, Kinichi Ushio Inc.
Takayanagi, Toshio Tokushima University Tokushima University Educator and Researcher Directory KAKEN Search Researchers
Suzuki, Yasutada Kanazawa Institute of Technology
simple analytical method
Highly sensitive solid-phase colorimetry for nickel ion was demonstrated using an improved reflection colorimeter equipped with a coaxial optical-fiber cable. The nickel complex with α-furil dioxime was collected on a small-size membrane filter embedded in a disposable syringe filter unit. The leading edge of the optical-fiber cable was connected to the syringe filter unit via a Luer-lock fitting, and the color intensity of the sample on the filter was evaluated accurately. The detection limit was 0.8 ng in 2.5 mL of the complex solution (0.3 μg L−1). This improved configuration is applicable to highly sensitive on-site analysis without expensive instruments nor high laboratory skills.
The Japan Society for Analytical Chemistry
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analsci_37_7_1045.pdf 323 KB
Science and Technology