Scholarly record
INCREASING THE ACCURACY OF MULTISPECTRAL TELEVISION MEASUREMENTS OF PHYTOPLANKTON PARAMETERS IN AQUEOUS MEDIA
Abstract
Multispectral television measurements can be used for applied tasks of environmental monitoring, in particular for measuring the parameters of phytoplankton in aqueous media. In this case, the concentration of phytoplankton particles in the water volume is determined, the average particle sizes and the average concentration of chromophores in the near-surface layer. The aim of the work is to improve the multispectral television method to increase the accuracy of measuring the parameters of phytoplankton. An improved method for multispectral television measurement of phytoplankton parameters in aqueous media, which includes sampling, determination of the qualitative and quantitative composition of suspended particles by means of a flow multispectral television measurement analysis of continuous particles, the comparison of the obtained data with the normalized values is supplemented by the fact that multispectral images are analyzed at certain wavelengths, which allow to indirectly measure the average particle size of phytoplankton in aqueous media using the regression equation, which connects the particle sizes with the results of multispectral measurements. The influence of the effect of localized absorption by chromophores in phytoplankton particles of aqueous media on the accuracy of multispectral measurements was studied. The localized absorption of radiation leads to a decrease in the total absorption index of the aquatic medium in comparison with the homogeneous distribution of chromophores. A consequence of this is an increase in the depth of penetration of light into the medium and an increase in the coefficient of diffuse reflection. Depending on the concentration of phytoplankton particles, their shape and size, such changes in penetration depth and reflection coefficient can be very significant. Therefore, without taking into account the effect of localized absorption in phytoplankton particles, the errors in measuring their parameters can reach 70-80%, which will not allow using the developed means for applied tasks of ecological monitoring. When this effect is taken into account and the corresponding correction factors are introduced, it is possible to obtain a total measurement error of no more than 0.5%. According to the results, it can be concluded that an improved method of multispectral measurements makes it possible to increase the accuracy of measuring phytoplankton parameters by taking into account the effect of localized absorption in scattering particles.
Publication Impact Profile
Publication details
References15
Barun V.V., Ivanov A.P. Specific features of the spectral absorption capacity of red blood cells. Almanac of Clinical Medicine: III Conference in Troitsk "Medical Physics and Innovations in Medicine", Russia, 2008. vol. XVII, pp 28–31.
Ishchenko V. et al. Assessment of batteries influence on living organisms by bioindication method. 16th International Multidisciplinary Geoconference SGEM 2016. SGEM2016 Conference Proceedings, June 28 - July 6, 2016. Book 5. Ecology, Economics, Education and Legislation, Bulgaria, vol. II, pp 85-92.
Kudela R. M., Palacios S. L., Austerberry D. C. et al. Application of hyperspectral remote sensing to cyanobacterial blooms in inland waters // Remote Sensing of Environment, USA, 2015, issue 2, pp 1–10.
Shi S., Song S., Gong W. et al. Improving Backscatter Intensity Calibration for Multispectral LiDAR. Geoscience and Remote Sensing Letters, IEEE, USA, 2015, vol.12, issue 7, pp 1421–1425.
Martsenyuk V., Petruk V. G., Kvaternyuk S. M. et al. Multispectral control of water bodies for biological diversity with the index of phytoplankton. 2016 16th International Conference on Control, Automation and Systems (ICCAS 2016), Korea, 988–993 (2016).
Nel’ubina N.V., Pidgirny V.P., Bulgakova O.N., Zvekov A.A., Kalenskii A.V. Peculiarities of spectral measurements of colored suspensions in thick-walled cuvettes // Computer Optics, Russia, 2016, issue 40(4), pp 508-515.
Naumenko E. K. Influence of Erythrocyte Aggregation on the Scattering Properties of Blood // Journal of Applied Spectroscopy, Russia, 2003, issue 70 (3), pp 375-380.
Lopatin V.N., Priezzhev A.V., Aponasenko A.D. et al. Light scattering methods in the analysis of dispersed biological media, Russia, 2004, 384 p.
Lopatin V.N., Sidko F. Ya. Introduction to the optics of cell suspensions, USSR, 1988, 240 p.
Boren K., Huffman D. Absorption and Scattering of Light by Small Particles, USA, 1983, 240 p.
Van de Hulst H.C. Light scattering by small particles, USA, 1957, 470 p.
Pushkareva A.E. Methods of mathematical modeling of biological tissue optics, Russia, 2008, 103 p.
Barun V.V., Ivanov A.P., Petruk V.G. et al. Modeling the influence of the epidermis on the transfer of light and heat in the skin. Problems of optical physics and biophotonics. Proceedings of the 12th International Youth Scientific School on optics, laser physics and biophotonics. Russia, 2009, pp 69–78.
Tuchin V.V. Lasers and Fiber Optics in Biomedical Research, Russia, 1998, 384 p.
Zege E. P., Ivanov A.P., Katsev I.L. Image transfer in a scattering medium, Germany, 2011, 349 p.
Citing literature
Number of times cited according to Crossref: 1
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.
