Journal of Navigation and Port Research (한국항해항만학회지)

Korean Institute of Navigation and Port Research (한국항해항만학회)
권호 표지
DOI QR코드

DOI QR Code

Salinity Determination for Sea Water Using Immersion-Type On-Line Refractometer

침적식 온라인 굴절계를 이용한 해수의 염도 측정

  • Published : 2002.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

An immersion-type on-line refractometer useful for the in-situ measurement of salinity and temperature of sea water is developed, and its performance is examined by applying the refractometer to known salt solution having salt concentration between 2 and 4 % similar to practical sea water salinity. Since refractive index and temperature are measured simultaneously, it is possible to compensate the effect of temperature for fast and direct measurement. The outcome of salinity measurement for the different concentrations of salt solution indicates that the device is suitable for the salinity measurement by yielding stable and reproducible reading.

해수의 염도와 온도를 현장에서 측정할 수 있는 침적식 온라인 굴절계를 제작하고 실제 해수와 유사한 2 % 내지 4 %의 염수를 사용하여 그 성능을 조사하였다. 굴절률과 온도를 동시에 측정함으로 온도보상을 신속하게 할 수 있어 염도의 직접측정을 가능하게 하였다. 각기 다른 농도의 염용액에서 측정된 염도의 결과로부터 본 실험의 장치는 안정성과 재현성을 모두 갖는 염도 측정이 가능함을 알았다.

Keywords

References

  1. 최한욱, 김영한 (2001), 온도보상형 온라인 굴절계를 이용한 해수의 염도측정, 한국항만학회지, 15권, pp. 99-105
  2. Bodermann, B., Keppert, M. and Abou-Zeid, A. (2002), 'Diode laser refractometer for flight measuring technique', Tech. Messen, vol. 69, no. 6, pp. 317-322 https://doi.org/10.1524/teme.2002.69.6.317
  3. Fang, H. and Juncar, P. (1999), 'A new simple compact refractometer applied to measurements of air density fluctuations', Review of Scientific Instruments, vol. 70, no. 7, pp. 3160-3167 https://doi.org/10.1063/1.1149880
  4. Hanning, A. and Roeraade, J. (1997), 'A spectroscopic refractometer for temperature-independent refractive index detection', Anal. Chem., vol. 69, no. 8, pp.1496-1503 https://doi.org/10.1021/ac961111c
  5. Lukosz, W., Stamm, C., Moser, H. R., Ryf, R. and Dubendorfer, J. (1997), 'Difference interferometer with new phase-measurement method as integrated-optical refractometer, humidity sensor and biosensor', Sensors and Actuators B, vol. 39, pp. 316-323 https://doi.org/10.1016/S0925-4005(97)80226-2
  6. Minato, H., Kakui, Y., Nishimoto, A. and Nanjo, M. (1989), 'Remote refractive index difference meter for salinity sensor', IEEE Trans. on Instr. and Meas., vol. 38, no. 2, pp. 608-612 https://doi.org/10.1109/19.192359
  7. Qi, Z. M., Matsuda, N., Santos, J. H., Takatsu, A. and Kato K. (2002), 'Prism-coupled multimode waveguide refractometer', Optics Lett- vol. 27, no. 9, pp. 689-691 https://doi.org/10.1364/OL.27.000689
  8. Su, D.-C., Lee, J.-Y. and Chiu, M. H. (1998), 'New type of liquid refractometer', Opt. Eng., vol. 37, no. 10, pp. 2795-2797 https://doi.org/10.1117/1.601818
  9. Veldhuis, G. L, van der Veen, L. E. W. and Lambeck, P. V. (1999), 'Integrated optical refractometer based on waveguide bend loss', J. Lightwave Tech., vol. 17, no. 5, pp. 857 https://doi.org/10.1109/50.762904