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Submersible Spectrofluorometer for Real-Time Sensing of Water Quality.

Puiu A, Fiorani L, Menicucci I, Pistilli M, Lai A - Sensors (Basel) (2015)

Bottom Line: The elimination of filters and pumps has the advantage of greater system simplicity and especially of avoiding the risk of sample degradation.The obtained results are reported in the paper.The sensitivity achieved for chlorophyll-a detection was found to be at least 0.2 µg/L.

View Article: PubMed Central - PubMed

Affiliation: Diagnostics and Metrology Laboratory, ENEA, Via Enrico Fermi 45, 00044 Frascati, Italy. adriana.puiu@enea.it.

ABSTRACT
In this work, we present a newly developed submersible spectrofluorometer (patent pending) applied to real-time sensing of water quality, suitable for monitoring some important indicators of the ecological status of natural waters such as chlorophyll-a, oil and protein-like material. For the optomechanical realization of the apparatus, a novel conceptual design has been adopted in order to avoid filters and pumps while maintaining a high signal-to-noise ratio. The elimination of filters and pumps has the advantage of greater system simplicity and especially of avoiding the risk of sample degradation. The use of light-emitting diodes as an excitation source instead of Xe lamps or laser diodes helped save on size, weight, power consumption and costs. For sensor calibration we performed measurements on water samples with added chlorophyll prepared in the laboratory. The sensor functionality was tested during field campaigns conducted at Albano Lake in Latium Region of Italy as well as in the Herzliya Harbor, a few kilometers North East of Tel Aviv in Israel. The obtained results are reported in the paper. The sensitivity achieved for chlorophyll-a detection was found to be at least 0.2 µg/L.

No MeSH data available.


Panel of the data processing software showing: (a) unprocessed spectra; (b) results of the automatic data processing.
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sensors-15-14415-f009: Panel of the data processing software showing: (a) unprocessed spectra; (b) results of the automatic data processing.

Mentions: A friendly graphical user interface was developed in the LabView environment for rapid data processing. In the first panel of the developed application the user can load the data to be analyzed and set the calculus parameters. A second panel shows the background-free spectrum and all calculated results (Figure 9).


Submersible Spectrofluorometer for Real-Time Sensing of Water Quality.

Puiu A, Fiorani L, Menicucci I, Pistilli M, Lai A - Sensors (Basel) (2015)

Panel of the data processing software showing: (a) unprocessed spectra; (b) results of the automatic data processing.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4507635&req=5

sensors-15-14415-f009: Panel of the data processing software showing: (a) unprocessed spectra; (b) results of the automatic data processing.
Mentions: A friendly graphical user interface was developed in the LabView environment for rapid data processing. In the first panel of the developed application the user can load the data to be analyzed and set the calculus parameters. A second panel shows the background-free spectrum and all calculated results (Figure 9).

Bottom Line: The elimination of filters and pumps has the advantage of greater system simplicity and especially of avoiding the risk of sample degradation.The obtained results are reported in the paper.The sensitivity achieved for chlorophyll-a detection was found to be at least 0.2 µg/L.

View Article: PubMed Central - PubMed

Affiliation: Diagnostics and Metrology Laboratory, ENEA, Via Enrico Fermi 45, 00044 Frascati, Italy. adriana.puiu@enea.it.

ABSTRACT
In this work, we present a newly developed submersible spectrofluorometer (patent pending) applied to real-time sensing of water quality, suitable for monitoring some important indicators of the ecological status of natural waters such as chlorophyll-a, oil and protein-like material. For the optomechanical realization of the apparatus, a novel conceptual design has been adopted in order to avoid filters and pumps while maintaining a high signal-to-noise ratio. The elimination of filters and pumps has the advantage of greater system simplicity and especially of avoiding the risk of sample degradation. The use of light-emitting diodes as an excitation source instead of Xe lamps or laser diodes helped save on size, weight, power consumption and costs. For sensor calibration we performed measurements on water samples with added chlorophyll prepared in the laboratory. The sensor functionality was tested during field campaigns conducted at Albano Lake in Latium Region of Italy as well as in the Herzliya Harbor, a few kilometers North East of Tel Aviv in Israel. The obtained results are reported in the paper. The sensitivity achieved for chlorophyll-a detection was found to be at least 0.2 µg/L.

No MeSH data available.