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Compact and advanced laser spectrometer for water quality analysis

Compact and advanced laser spectrometer for water quality analysis. Luca Fiorani Diagnostics and Metrology Laboratory ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development). Transnational Workshop “Efficient Management of Water Resources”

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Compact and advanced laser spectrometer for water quality analysis

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  1. Compact and advanced laser spectrometer for water quality analysis Luca Fiorani Diagnostics and Metrology Laboratory ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development) Transnational Workshop “Efficient Management of Water Resources” EcoMondo 2010Rimini, November 4, 2010

  2. CASPER • CASPER: Compact and Advanced laser SPEctrometer for Riade (RIADE was an Italian project to combat desertification)

  3. Patent and prize • CASPER has been patented in 2005 • CASPER resulted the first classified project of the “Research and Innovation Prize 2005” awarded by “BIC Lazio” (Business Innovation Center Latium) and “Regione Lazio” (Latium Regional Government)

  4. Principle • Laser induced fluorescence (LIF) • Emission spectrum of Synecochoccus leopoliensis excited at 355 nm

  5. Innovation • Double filtration (30 and 0.2 μm) • Discrimination of particulate and dissolved matter • Double excitation (266 and 405 nm) • Detection of oils, PAH and proteins (266) and CDOM, chl-a and other algal pigments (405)

  6. Hardware Water in & out Pumps & valves Power supply Spectrometers Filters Opticalfibers RS232 DiodeLaser Cuvettes Nd:YAGLaser USB hub

  7. Software • Remote control • Battery, lasers, shutters, pumps and valves are controlled from the laptop (left) • Data acquisition • Spectra are acquired from the laptop (right)

  8. Emission spectra • CDOM • Sensitivity: about 0.1 mg/l • Chl-a • Sensitivity: about 0.1 μg/l The chl-a peak disappears after ultrafiltration Excited at 266 nm Excited at 405 nm

  9. Data analysis • Peak position of spectral bands in the LIF signal

  10. Sicily Campaign 2005 • Licata and Siracusa, May 22 – 27, 2005 • 81 samplings: GPS, conductivity, temperature, pH, chl-a and CDOM (CASPER)

  11. Sicily Campaign 2005 • Chl-a • Licata, May 22 – 25, 2005

  12. Sicily Campaign 2005 • CDOM • Licata, May 22 – 25, 2005

  13. Sicily Campaign 2005 • CDOM and conductivity (salinity) irrigation sea intrusion Conductivity CDOM

  14. Oceanography • CASPER has been deployed in four oceanographic campaigns (Arctic Ocean and Mediterranean Sea) R/V Oceania CHLretrieved by CASPER during AREX 2006 (black crosses: sampling stations)

  15. Conclusions • CASPER, an innovative laser spectrofluorometer, has been developed at the ENEA Research Center in Frascati (patent and prize) • CASPER operated during a field campaign in Sicily (May 22 – 27, 2005) • CASPER data improved our understanding of salinization and desertification • CASPER has also been deployed in oceanographic campaigns • CASPER is now exploited by the Sardinian spin-off “Intrega” (commercial agreement with ENEA)

  16. Thanks for the attention! • luca.fiorani@enea.it BLA, BLA, BLA…

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