EARSeL eProceedings Vol. 3, No. 3, 316-322, 2004

Ecological monitoring in the Caspian Sea (mouth zone of the river Volga) with a shipboard laser spectrometer
Vasiliy V. Chubarov and Victor V. Fadeev

Some peculiarities and results of ecological monitoring of the Caspian Sea coastal zone and the mouth zone of the river Volga are discussed. A shipboard laser spectrometer, elaborated by the authors, was included in the measuring complex of the new ecological patrol vessel Russia belonging to the Foreign Economic Association Zarubezhgeologia of the Ministry of Natural Resources of the Russian Federation. Emission spectra with laser excitation at 532 and 266 nm were registered both in motion of the ship and at stations, containing the Mie scattering line, the Raman scattering (RS) band from water, the fluorescence bands of dissolved organic matter (DOM), oil pollution (OP) and phytoplankton. For this specific aquatic region special attention was given to the determination of OP concentrations from the spectra. It is shown that the direct fluorescence method allows the OP concentration to be determined without sample preparation in all types of water down to 10 mg/l using a new water-soluble standard. A very high variability of the intensity of the above-mentioned spectral bands was detected in the investigated area. The results demonstrate the practical application of the methods and tools of laser spectroscopy to the ecological monitoring of aquatic systems with complex structures and dynamics.

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Submitted: 12 June 2003
Revised: 10 March 2004
Accepted: 10 July 2004

Chubarov V V & V V Fadeev, 2004. Ecological monitoring in the Caspian Sea (mouth zone of the river Volga) with a shipboard laser spectrometer. EARSeL eProceedings 3(3), 316-322


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