Optical Review

, Volume 21, Issue 3, pp 395–400 | Cite as

Optical multi-sensor for simultaneous measurement of absorbance, turbidity, and fluorescence of a liquid

  • Reetaleena Rissanen
  • Ilpo Niskanen
  • Jukka Räty
  • Pirjo Kyyrönen
  • Asta Leinonen
  • Risto Myllylä
  • Kai-Erik Peiponen
Special Section: The Tenth Japan-Finland Joint Symposium on Optics in Engineering “OIE’13, Utsunomiya” Regular Papers


We have built a novel optical multi-sensor apparatus (MSA) for the measurement of light absorption, scattering and fluorescence either separately or simultaneous from a liquid. From the measured data it is possible to calculate different optical properties of liquid samples, such as absorbance and turbidity. The MSA is a portable device which is an advantage considering different field applications. The MSA was tested in laboratory conditions using well-known reference liquids. Data obtained with the MSA were compared with data obtained with a commercial spectrophotometer, fluorometer and a nephelometer, respectively. Relatively good correlations between the data of MSA and the three commercial devices were found. It is proposed that MSA is a potential device for monitoring changes of process liquids and liquid products in industry.


multi-sensor transmission scattering fluorescence liquid 


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Copyright information

© The Optical Society of Japan 2014

Authors and Affiliations

  • Reetaleena Rissanen
    • 1
  • Ilpo Niskanen
    • 2
  • Jukka Räty
    • 3
  • Pirjo Kyyrönen
    • 3
  • Asta Leinonen
    • 3
  • Risto Myllylä
    • 4
  • Kai-Erik Peiponen
    • 5
  1. 1.Finnish Institute of Occupational HealthLappeenrantaFinland
  2. 2.Thule InstituteUniversity of OuluOuluFinland
  3. 3.CEMIS-OULUUniversity of OuluKajaaniFinland
  4. 4.Optoelectronics and Measurement Techniques LaboratoryUniversity of OuluOuluFinland
  5. 5.Institute of PhotonicsUniversity of Eastern FinlandJoensuuFinland

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