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Real-time monitoring of bacterial and organic pollution in a water stream by fluorescence depletion spectroscopy

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Abstract

We demonstrate an approach for a real-time, consumable-free optical system operating on a liquid jet which can be easily derived from the water distribution infrastructure. We apply a pump-probe scheme based on the acquisition and nanosecond manipulation of UV-excited fluorescence to increase the selective identification of bacterial against organic pollutants in water.

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Acknowledgements

The authors acknowledge support from the Swiss National Science Foundation through the NCCR MUST (Molecular Ultrafast Science and Technology) Network. We are thankful to M. Moret, engineer at GAP-Biophotonics, for the technical support in setting-up the experiment and Miss Maude Gondré for helping during the measurement sessions.

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Authors and Affiliations

  1. GAP-Biophotonics, University of Geneva, 22, Chemin de Pinchat, 1211, Geneva 4, Switzerland

    Geoffrey Gaulier, Gustavo Sousa, Luigi Bonacina & Jean-Pierre Wolf

  2. TIBIO Sagl, Via Alla Valle 11, 6949, Comano, Switzerland

    Davide Staedler

  3. Scitec Research SA, Avenue de Provence 18-20, 1000, Lausanne 20, Switzerland

    Davide Staedler

Authors
  1. Geoffrey Gaulier
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  2. Davide Staedler
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  3. Gustavo Sousa
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  4. Luigi Bonacina
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  5. Jean-Pierre Wolf
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Corresponding author

Correspondence to Luigi Bonacina.

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Gaulier, G., Staedler, D., Sousa, G. et al. Real-time monitoring of bacterial and organic pollution in a water stream by fluorescence depletion spectroscopy. Appl. Phys. B 123, 55 (2017). https://doi.org/10.1007/s00340-016-6634-2

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  • DOI: https://doi.org/10.1007/s00340-016-6634-2

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