21 December 1999 Mobile multisensor system for environmental monitoring
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The presented mobile sensor system consists of a LIF spectrometer, a reflectance spectrometer and a temperature sensor. It is possible to connect more sensors for example a fiberoptic pH sensor or a fiberoptic oxygen sensor. The LIF spectrometer is suitable for measuring mineral oils, PAHs or herbicides directly from soils, waters and process streams with a fiber-optic multichannel setup. The LIF sensor consists of a low-cost nitrogen laser which can pump a dye laser. A spectral analyzer equipped with a CCD camera is used as detector. Reflectance spectroscopy measurements are made using a tungsten halogen light source. The same probe is used for both techniques, LIF and reflection spectroscopy. It is coupled into the system by an optical fiber. The device is controlled by a computer which is also used to analyze the measured data. The sensor system is installed in a small trolley. This set up is suitable for a rapid analysis of many samples, which is an advantage in comparison with standard chemical analytics. It can be used to screen larger contaminated areas for mineral oils and PAHs. Also in case of an emergency situation, for example after an accident, the device is useful to cut down the time of sampling and the time one has to wait for the results.
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Thorsten de Vries, Thorsten de Vries, Ralf Paetzold, Ralf Paetzold, Kai Jantos, Kai Jantos, Eberhard Voss, Eberhard Voss, Angelika Anders, Angelika Anders, } "Mobile multisensor system for environmental monitoring", Proc. SPIE 3853, Environmental Monitoring and Remediation Technologies II, (21 December 1999); doi: 10.1117/12.372860; https://doi.org/10.1117/12.372860


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