The Processes that Determine the Fate of Pesticides in Soil
Procesi koji određuju sudbinu pesticida u zemljištu
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Author
Djurovic, Rada
Keywords
PesticidesSoil
Adsorption
Degradation
Migration
Pesticidi
zemljište
adsorpcija
degradacija
migracija
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Show full item recordAbstract
Pesticides are an inevitable part of the environment, because due to the intensive use
their remains are frequently detected in nature, particularly in the soil. Regardless the way
pesticides get into the soil, their further fate will depend on many factors. Given the complexity
of interactions of pesticides and soil, and the fact that the intensity of interaction
of the same compound with different soil types is different, the studies of the influence
of most important soil parameters on the mentioned interactions are becoming more
numerous.
In this paper are presented the processes that determine the fate of pesticides in the
soil, as well as the factors that affect these processes. A special emphasis is placed on the
adsorption processes, since they determine the concentration of free fraction of pesticide
molecules, i.e. of pesticide quantity that may participate in detoxification processes including
degradation and mobility. Pesticidi su neizostavni deo životne sredine, jer se usled intenzivne primene njihovi
ostaci često detektuju u prirodi, naročito u zemljištu. Bez obzira na koji način dospeju u zemljište,
njihova dalja sudbina će zavisiti od mnoštva faktora. Uzimajući u obzir složenost interakcija
pesticida i zemljišta, kao i činjenicu da je intenzitet interakcija istog jedinjenja sa
različitim zemljištima različit, sve su brojnija ispitivanja uticaja najvažnijih zemljišnih parametara
u pomenutim interakcijama.
U ovom radu su predstavljeni procesi koji određuju sudbinu pesticida u zemljištu, kao
i faktori koji utiču na te procese. Poseban osvrt je stavljen na adsorpcione procese, s obzirom
da oni određuju koncentraciju slobodne frakcije molekula pesticida, tj. količine pesticida
koja može da učestvuje u detoksifikacionim procesima u koje spadaju procesi degradacije
i kretanja.