Chlororganic pesticides migration in groundwater of southern Bahmutskyi basin
Abstract
Migration of organochlorine pesticides in groundwater, occurring in the process of general mass transfer in the area of hypergenesis in Bahmutskiy basin has been considered. Some of the main parameters of pesticide distribution system "soil - water" (water chemistry, particle size and mineral composition of soil, etc.) have been determined as well as their accumulation on geochemical barriers.
During field studies of pesticides migration in loamy-sandy soils a stable pattern of their increasing concentrations with the temperature growth in groundwater has been established.
It is established that the intensity of molecular diffusion of pesticides increases with increasing porosity of the soil system, soil moisture, temperature increase. It is noted that the significance of molecular diffusion for agricultural chemicals migration, including pesticides in the underground hydrosphere and, as a result - contamination of groundwater - should be considered only at short distances from the source of contamination.
It has been found out that the role of molecular diffusion can be very significant when calculating the pollution front moving on long distances calculated in kilometers. It is envisaged that diffusion mechanisms provide mass transfer between the cross-cutting and dead end pores in soils and between permeable and impermeable layers of mineral matter. Thus, in the first case diffusion slows the spread of pesticide pollution, and in the second case - on the contrary - it accelerates it. This is a universal model for heterogeneous (fractured-porous and layered) soils. It has been noted that in some soils homogeneous by structure and texture water migration of pesticides occurs according to a certain scheme of convection-diffusion mass transfer, but in the case of large filtration speeds the priority are hydro dispersion processes that by external signs resemble diffuse scattering.
Cyclical migration of organochlorine pesticides in groundwater has been established conditioned by physical and chemical properties of the soil, organochlorine pesticides themselves and sorption-desorption processes that take place in the system "soil - water".
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2. Bochever, F. M., Lapshin, N. N., Oradovskaja, A. E. (1979). Zashhita podzemnyh vod ot zagrjaznenija [Protection of groundwater against pollution]. M., Nedra, 254.
3. Verigin, N. N. (1952). Nagnetanie vjazhushhih rastvorov v gornye porody [Injection of binding solutions in rocks], Izvestija AN SSSR, otd. teh. nauk, 5, 174 – 187.
4. Golovkin, G. V., Volovnik, L. L. (1976). Sorbcija pesticidov komponentami pochv [Sorption of pesticides soil components]. Himija v sel'skom hozjajstve, 9, 48–57.
5. Golubev, V. S., Garibjanc, A. A (1968). Geterogennye processy geohimicheskoj migracii [Heterogeneous processes of geochemical migration]. M., Nedra, 192.
6. Korsunskaja, L. P., Shein, E.V. (2001). Vlijanie plotnosti i skorosti fil'tracii na parametry massoperenosa v pochvah [Effect of density and velocity filtering mass transfer parameters in soils]. Vesnik MGU, Pochvovedenie, 2, 17,
37-43.
7. Levich, V. G. (1952). Fiziko-himicheskaja gidrodinamika [Physico-chemical hydrodynamics]. M., AN SSSR, 538.
8. Mironenko, V. A., Rumynin, V. K., Uchaev, V. G. (1980). Ohrana podzemnyh vod v gornodobyvajushhih rajonah [Protection of groundwater in the mining areas]. L., Nedra, 320.
9. Klisenko, M. A. (1983). Metody opredelenija mikrokolichestv pesticidov v produktah pitanija, kormah i vneshnej srede [Methods for determination of trace amounts of pesticides in food, feed and the environment]. M., Kolos, 304.
10. Potapenko, G. E. (2013). Vmіst pesticidіv u pіdzemnih vodah ta gruntah Donechchini, Vіsnik Harkіvs'kogo nacіonal'nogo unіversitetu іmenі V. N. Karazіna, 1084, 233–236.
11. Roshal', A. A., Shestakov, V. M. (1969). O migracii podzemnyh vod v sloistyh plastah [About migration of groundwater in layered reservoirs]. Trudy VSEGINGEO, Moskva, 14, 43–56.
12. Samojlenko, V. G. (1979). K prognozirovaniju zagrjaznenija gruntovyh vod sel'skohozjajstvennymi himikatami [By predicting groundwater contamination by agricultural chemicals]. V kn. Trudy II simpoziuma mezhdunarodnoj as-sociacii gidrogeologov (Vil'njus, 10-15 ijulja). M., Nedra, 294-296.
13. Frid, Zh. (1981). Zagrjaznenie podzemnyh vod [Groundwater pollution]. M., Nedra, 304.
14. Anderson, M. P. (1979). Using models to simulate the movement of contaminants through groundwater flow sys-tems. CRS Critical Reviews in Environmental Control, 11, 97–156.
15. Boochs, P. W. (1977). Einflu der Sorption suf Transportvorgange im Grundwasser. Dentasche Cowaserkandliche Mitteilungen, 21, 3, 60–65.
16. Phillips, R. E., Skott, H. D., Paetzold, R. F. (1974). Diffusion of herbicides in the adsoerbed phase. Soil Science So-cieti of America Proceedings, 38, 4, 558–562.
17. Gustafson, A. (1978). Lackage av kvave fran aker till graundvatter. Nord Jordbrugsforks, 1, 133–154.
18. Skott, S. R., Phillips, R. E. (1972). Diffusion of selective herbicides in soil. Soil Science Society of America Proceedings, 36, 5, 714–719.
19. Rao, P. S., Davidson J. M. (1979). Adsorption and movement of selected pesticides at nigh consentrations in soils. Natur. Res., 4, 375–380.
20. Khan, S. U. (1978). The interaction of organic matter with pesticide. Soil Organic Matter, 135–171.
21. Pierce, P. H., Olney, C. E., Felbeck, C. T. (1971). Pesticide adsorption in soils and sediments. Environmental Letters, 2, 157–172.
22. Chipra, S. L., Goel, B. B. (1971). Studies in the adsorption and leaching of lindane on soils. Indian Journal of Ap-plied Chemistry, XXXIV, 265–272.
23. Spenser, W. F. (1975). Movement of DDT and its derivatives into the atmosphere. Residue Reviews, 91, 117–123.
