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Voltammetric Determination of Boric Acid Using the Ternary Complexation System with Salicylaldehyde and H‐Acid |
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| Authors: | Kô Takehara Takao Fujimori Kei Inagi Mari Kajiwara Yoshikazu Harata Kazuhisa Yoshimura |
| Institution: | 1. Department of Chemistry, Faculty of Sciences, Kyushu University, 6‐10‐1, Hakozaki, Fukuoka 812‐8581, Japan;2. Department of Chemical Science and Engineering, Miyakonojo National College of Technology, 473‐1, Yoshio‐cho, Miyakonojo, Miyazaki 885‐8567, Japan;3. Takaoka Chemical Co., ltd., 80 Nagare, Jimokuji, Ama‐city, Aichi 490‐1111, Japan |
| Abstract: | A square‐wave voltammetric method for the determination of boric acid in water has been described based on the new understanding of the electrochemical behavior of boric acid‐Azomethine H complexation. Salicylaldehyde and H‐acid were used as the starting materials of boric acid‐Azomethine H complex and their concentrations were optimized for boric acid determination in water. A glassy carbon electrode, instead of a conventional mercury electrode, was used in the measurement. The detection limit of the proposed method was 0.10 mg B dm?3. The proposed method was successfully used for boric acid determination in the water from a seawater desalination RO plant. |
| Keywords: | Boron determination Boric acid‐Azomethine H complex Square‐wave voltammetry RO‐desalinated water |