한국생산제조학회지 (Journal of the Korean Society of Manufacturing Technology Engineers)

  • 제21권5호
  • /
  • Pages.720-725
  • /
  • 2012
  • /
  • 2508-5093(pISSN)
  • /
  • 2508-5107(eISSN)
한국생산제조학회 (The Korean Society of Manufacturing Technology Engineers)
권호 표지
DOI QR코드

DOI QR Code

잔류염소 측정용 전기화학센서의 유효성

Effectiveness of the Electrochemical Sensor for the Free Chlorine Measurement

  • 김홍원 (숭실대학교 대학원 기계공학과) ;
  • 정남용 (숭실대학교 공과대학 기계공학과)
  • 투고 : 2012.08.27
  • 심사 : 2012.09.19
  • 발행 : 2012.10.15
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Sodium hypochlorite is used worldwide as a water disinfectant and in bleaching agent. Sodium hypochlorite applied to water initially undergoes hydrolysis to form free chlorine consisting of hypochlorous acid(HOCl) and hypochlorite ion($OCl^-$). For free chlorine determination, an electrochemical method is simple due to the electroactivity of free chlorine; it measures current and is free of most reagents. Amperometric free chlorine sensor has been developed with gold (Au)-based electrode. The 3-electrode free chlorine sensor whose working and counter electrodes were Pt exhibited excellent response to HClO at +400mV vs. Ag/AgCl/sat. KCl. In addition, the use of a pH error correction algorithm provided a reliable measurement of residual free chlorine in water sample without any pretreatment in the normal pH range(pH 6~8) of municipal water supply. The free chlorine sensor installed in on-line monitoring system could be used to continually monitor the level of residual free chlorine in real samples.

키워드

참고문헌

  1. Snoeyink, V. L., and Jenkins, D., 1980, Water Chemistry, John Wiley & Sons, New York, pp. 388-392.
  2. Clark, R. M., and Adams, J. Q., 1993, Control of Disinfection by Products: Economic and Technological Considerations, Safety of Water Disinfection: Balancing Chemical and Microbial Risks, G.E. Crauned, IL SI Press, Washington, DC, pp. 345-348.
  3. William, W. B., Lew, C. S., and Loh, J. Y., 1998, "Predictions of Potential Human Health and Ecological Risks from Power Plant Discharges of Total Residual Chlorine and Chloroform into Rivers," Environ. Sci. Technol., Vol. 32, No. 14, pp. 2162-2171. https://doi.org/10.1021/es970209l
  4. Clark, R. M., and Silvaganesan, M., 2002, "Predicting Chlorine Residuals in Drinking Water: A Second Order Model," J. Water Resour. Plan Manag., Vol. 128, No. 2, pp. 152-161. https://doi.org/10.1061/(ASCE)0733-9496(2002)128:2(152)
  5. Agus, E.., Voutchkov, N., and Sedlak, L. D., 1998, "Disinfection By-products and Their Potential Impact on the Quality of Water Produced by Desalination Systems: A Literature Review," Desalination, Vol. 237, No. 1-3, pp. 214-237.
  6. Villanueva, C. M., Gagniere, B., Monfort, C., Nieuwenhuijsen, M, J., and Cordier, S., 2007, "Sources of Variability in Levels and Exposure to Trihalomethanes," Environ, Res., Vol. 103, No. 2, pp. 211-220. https://doi.org/10.1016/j.envres.2006.11.001
  7. March, J. G., Gual, M., and Simonet, B. M., 2002, "Determination of Residual Chlorine in Greywater using O-tolidine," Talanta, Vol. 58, No. pp. 995-1001. https://doi.org/10.1016/S0039-9140(02)00453-8
  8. Xu, J., Feng, K., and Weck, M., 2011, "Free Chlorine Sensing using an Interferometric Sensor," Sensors and Actuators B, Vol. 156, No. 2, pp. 812-819. https://doi.org/10.1016/j.snb.2011.02.045
  9. Kim, H. W., and Chung, N. Y., 2012, "Effectiveness of the Sensor using Lead Dioxide Electrodes for the Electrochemical Oxygen Demand," KSMTE, Vol. 21, No. 4, pp. 575-581.
  10. Telegina, E. V., Mozzhukhin, A. V., and Moskvin, A. L., 2010, "Flow-injection Potentiometric Determination of Trace Concentrations of Chloride Ions in Lowmineralized Natural Waters," J. Anal, Chem., Vol. 65, No. 10, pp. 1041-1044. https://doi.org/10.1134/S1061934810100096
  11. Javier, D. L., ordeig, O., and Javier, M. F., 2005, "Improved Free Chlorine Amperometric Sensor Chip for Drinking Water Applications," Anal. Chim. Acta, Vol. 554, No. 1-2, pp. 98-104. https://doi.org/10.1016/j.aca.2005.08.035
  12. Korea Law and Data, 2010, Management of Drinking Water Act, Ministry of Environment, Environmental Laws, Water Quality & Water Ecosystem.