Combination of an on-line biomonitor using light emitting bacteria and a UV spectrophotometer probe for homeland security and drinking water safety

Joep Appels; Eberhard Küster; Joep van den Broeke; Ben Tangena; Dick de Zwart; Albert Brandt

doi:10.1117/12.719983

4 May 2007 Combination of an on-line biomonitor using light emitting bacteria and a UV spectrophotometer probe for homeland security and drinking water safety

Joep Appels, Eberhard Küster, Joep van den Broeke, Ben Tangena, Dick de Zwart, Albert Brandt

Author Affiliations +

Proceedings Volume 6540, Optics and Photonics in Global Homeland Security III; 654005 (2007) https://doi.org/10.1117/12.719983
Event: Defense and Security Symposium, 2007, Orlando, Florida, United States

Abstract

The interest in on-line water quality monitors has increased significantly in the last years, because of the need for rapid, reliable and continuous monitoring. This has resulted in the introduction of new monitors which can provide (near) real-time information on water quality. They can be used for continuous river water quality control as well as for drinking water protection against intentional contamination. Still no universal monitor is yet available which is able to protect against all kinds of threats. The combination of complementary systems into a single integrated monitoring platform would greatly enhance the applicability of real time monitoring devices. Such a combination should be found in the complementary information derived from a chemical analytical technique and from an effect monitor (biomonitor). Where a chemical analytical monitoring system identifies and quantifies specific water contaminants, biomonitoring gives an indication of the total quality, including the effects of unknown toxic substances. This combination was found in using the TOXcontrol, a biological toxicity monitor using luminescent bacteria, and the scan spectroyser^TM, a submersible UV-VIS spectrophotometer probe, to evaluate drinking water safety. This combination allows for the verification of alarm signals from one instrument with the signal of the other, reducing false alarm rates. Experiments were performed in a laboratory setting and in a field test. It is concluded that the combination of the UV-VIS spectrophotometer and the toxicity biomonitor comprises a monitoring system with a high added value being capable of detecting a broad range of contaminants at low concentrations.

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Joep Appels, Eberhard Küster, Joep van den Broeke, Ben Tangena, Dick de Zwart, and Albert Brandt "Combination of an on-line biomonitor using light emitting bacteria and a UV spectrophotometer probe for homeland security and drinking water safety", Proc. SPIE 6540, Optics and Photonics in Global Homeland Security III, 654005 (4 May 2007); https://doi.org/10.1117/12.719983

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KEYWORDS

Water

Bacteria

Spectrophotometry

Toxicity

Biological research

Luminescence

Chemical analysis

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