期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 38, 期 -, 页码 67-72出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2016.04.006
关键词
Hydrofluoric acid; Pyrocatechol violet; Sensor; Alginate; Colorimetry
资金
- Human Resources Development of Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant - Korea Government Ministry of Knowledge Economy [20154010200810]
Colorimetric HF-sensitive hydrogel beads were prepared using alginate hydrogel as a host matrix and a pyrocatechol violet (PV)-titanium(IV) bis(ammonium lactato)dihydroxide (TALH) complex as a HF-sensing dye. The PV-TALH complex dye was released into a HF solution from the host matrices and turned the transparent HF solution yellow. From the results of control experiments, this yellow color was exclusively observed when the beads were exposed to HF. The color change allowed the detection of HF with the naked eye. Optimal conditions for the preparation of the HF-sensitive hydrogel were determined with consideration of the swelling behavior of the alginate hydrogel beads. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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