H. Hirano, Y. Isomura, M. Futagawa
2018
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Abstract
This study proposes a novel system to monitor the pH characteristics and electrical conductivity of 3-Hydroxy-3-methylhexanoic acid and 3-mercapto-3-methyl-1- hexanol, which are causative agents of underarm odor, to estimate underarm odor. A multimodal sensor, which can measure electrical conductivity, temperature, and pH, and an AgCl external electrode were adopted in the system to measure the pH of the agents on the skin. Experiments were conducted to measure the accuracy of the electrical conductivity and the pH for 3-hydroxy-3-methylhexanoic acid and 3-mercapto-3-methyl-1- hexanol to verify the applicability of the proposed system. The results showed that the proposed system may be able to accurately measure the pH and electrical conductivity of the causative agents.