Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Relationship between BrACs and BACs of Healthy Koreans for BAIIDs

  • SeungHwan Yi (Department of Mechanical Eng., College of Convergence Technology, Korea National University of Transportation) ;
  • BeomWoo Nam (Dr. Nam's Psychiatric Clinic) ;
  • Jeong-seok Seo (Gwangmyong Hospital, ChungAng University)
  • Received : 2024.01.02
  • Accepted : 2024.01.11
  • Published : 2024.01.31
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Abstract

This study aims to suggest the partition ratio (Q-factor) of healthy Koreans and the comparison results of breath alcohol concentration (BAC) measurements using two methods (photoacoustic and electrochemical methods) for developing breath alcohol ignition interlock devices (BAIIDs). Given the relationship between BACs and BrACs and the Q-factor, the alcohol metabolism of healthy Koreans (96 males and 91 females) is revealed for understanding the digestion of alcohol and surveying the fundamental data of alcohol-related problems, CO2 concentrations vs. alcohol concentrations, and the performance of alcohol sensors in the marketplace. The average Q-factor of healthy Korean males and females are 1,913 (95% confidence interval from 1,889-1,937) and 1,991 (95% confidence interval from 1,945-2,036). Photoacoustic measurements could be applied to predict the BACs of drinkers, which is confirmed by the Bland-Altman plots presented in this study. The biases based on the partition ratios (Q=1,913 and Q=1,991) in the Bland-Altman plots were -0.0004% (95% CI from -0.0011 to +0.0003% for males) and -0.0017% (95% CI from -0.020 to +0.017% for females).

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Acknowledgement

This research was supported by a grant from the Ministry of Land, Infrastructure and Transportation (Grant number 13TLRP-C067560-05-000000). The authors would like to thank the staff at Konkuk University Hospital who participated in this study. Dr. Nam and Seo worked at the KonKuk Hospital during this study.

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