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Moscow University Bulletin. Series 4. Geology

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Experimental research of photodegradation processes of organic compounds of natural waters

https://doi.org/10.33623/0579-9406-2018-4-75-80

Abstract

In order to study the effect of sunlight on the composition and properties of dissolved organic matter and metal forms in natural waters, the process of photodegradation of organo-mineral complexes in field conditions with samples of soil and swamp waters was studied. Total content of certain aliphatic and aromatic carboxylic acids increased in the studied samples after irradiation. Photodegradation of organic matter of the natural waters that are rich in iron is accompanied by formation of colloidal particles (Fe hydroxides). The amount of negatively-charged complexes of Ni, Cu, Zn and Cd increases during the insolation in swamp waters and decreases in soil waters.

About the Authors

O. Yu. Drozdova
Московский государственный университет имени М.В. Ломоносова
Russian Federation


N. A. Anohina
Московский государственный университет имени М.В. Ломоносова
Russian Federation


V. V. Demin
Московский государственный университет имени М.В. Ломоносова
Russian Federation


S. A. Lapitskiy
Московский государственный университет имени М.В. Ломоносова
Russian Federation


References

1. Алешина А.Р. Изменение биодоступности тяжелых металлов в природных водах при фотодеструкции органоминеральных комплексов. Человек и природа // Мат-лы XXVII Междунар. междисциплинарной конф. «Проблемы социоестественных исследований», 2017. М.: МАКС Пресс, 2017. С. 14–15.

2. Дроздова О.Ю., Олейникова О.В., Завгородняя Ю.А. и др. Изучение факторов, влияющих на деструкцию металлоорганических соединений в поверхностных водах // Экологическая безопасность территорий и акваторий: региональные и глобальные проблемы: Мат-лы регион. науч.-практ. конф., 2016. Керчь: ФГБОУ ВО «КГМТУ», 2016. С. 77–81.

3. Олейник Г.Н. Бактериальная деструкция органического вещества в водоемах и водотоках // Водные ресурсы. 1991. № 2. С. 89–97.

4. Олейникова О.В., Бычков А.Ю., Дроздова О.Ю. и др. Влияние процесса фотохимической деструкции растворенного органического вещества на микроэлементный состав поверхностных вод бореальной зоны // Геохимия ландшафтов (к 100-летию А.И. Перельмана): Мат-лы Всеросс. науч. конф. М.: МГУ, 2016. С. 394–396.

5. Орлов Д.С. Гуминовые вещества в биосфере. М.: Наука, 1993. 238 с.

6. Allard B., Borrn H., Petterson C., Zhang G. Degradation of humic substances by UV-irradiation // Environ. Intern. 1994. Vol. 20. P. 97–101.

7. Corin N., Backlund P., Kulovaara M. Degradation products formed during UV-irradiation of humic waters // Chemosphere. 1996. Vol. 33, N 2. P. 245–255.

8. Cory R.M., Ward C.P., Crump B.C., Kling G.W. Sunlight controls water column processing of carbon in arctic fresh waters // Science. 2014. Vol. 345. P. 925–928.

9. Ilina S.M., Drozdova O.Yu., Lapitskiy S.A. et al. Size fractionation and optical properties of dissolved organic matter in the continuum soil solution-bog-river and terminal lake of a boreal watershed (North Karelia, Russia) // Organ. Geochem. 2014. Vol. 66. P. 14–24.

10. Kopácek J., Hejzlar J., Kana J. et al. Photochemical, chemical, and biological transformations of dissolved organic carbon and its effect on alkalinity production in acidified lakes // Limnology and Oceanography. 2003. Vol. 48, N 1. P. 106–117.

11. Kulovaara M. Light-induced degradation of aquatic humic substances by simulated sunlight // Intern. J. Environ. Analyt. Chem. 1996. Vol. 62. P. 85–95.

12. Lapierre J.-F., del Giorgio P.A. Partial coupling and differential regulation of biologically and photochemically labile dissolved organic carbon across boreal aquatic networks // Biogeosci. 2014. Vol. 11. P. 5969–5985.

13. Pokrovsky O.S., Viers J., Dupré B. et al. Biogeochemistry of carbon, major and trace elements in watersheds of northern Eurasia drained to the arctic ocean: The change of fluxes, sources and mechanisms under the climate warming prospective // Comptes Rendus — Geosci. 2012. Vol. 344. P. 663–677.

14. Tranvik L.J., Bertilsson S. Contrasting effects of solar UV radiation on dissolved organic sources for bacterial growth // Ecol. Lett. 2001. Vol. 4. P. 458–463.

15. Vähätalo A.V., Wetzel R.G. Photochemical and microbial decomposition of chromophoric dissolved organic matter during long (months-years) exposures // Mar. Chem. 2004. Vol. 89. P. 313–326.

16. Wetzel R.G., Hatcher P.G., Bianci T.S. Natural photolysis by ultraviolet irradiance of recalcitrant dissolved organic matter to simple substrates for rapid bacterial metabolism // Limnology and Oceanography. 1995. Vol. 40. P. 1369–1380.

17. Zepp R.G., Callaghan T.V., Erickon D.J. Effects of enhanced solar ultraviolet radiation on biogeochemical cycles // J. Photochem. and Photobiol. Ser. B. Biology. 1998. Vol. 46. P. 69–82.


Review

For citations:


Drozdova O.Yu., Anohina N.A., Demin V.V., Lapitskiy S.A. Experimental research of photodegradation processes of organic compounds of natural waters. Moscow University Bulletin. Series 4. Geology. 2018;(4):75-80. (In Russ.) https://doi.org/10.33623/0579-9406-2018-4-75-80

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