Rozklad fungicydu karbendazym w srodowisku wodnym

• Autorzy: Bogacka T.
• Języki publikacji: PL

Abstrakty

PL

Wyznaczono dynamikę i kinetykę rozkladu szeroko stosowanego w kraju fungicydu - karbendazymu. Badania prowadzono w warunkach modelowych symulujących wodę rzeczną, destylowaną i ekosystem wodny uwzględniając różne stężenia początkowe fungicydu i temperatury oraz wpływ na rozklad karbendazymu zdolności adaptacyjnych mikroflory i właściwości kumulacyjnych.

EN

The study of the breakdown of the fungicide carbendazim widely used in Poland was carried out under model conditions simulating the environment of river water moderately polluted, distilled water, and dynamic aqueous ecosystem. The experiments were conducted using the fungicide in concentrations about 1 and 5 mcg/l at two temperatures - about 20°C and 5°C, and after adaptation of microorganisms to the presence of the fungicide. Taking the results of the experiment with river water the rate of the breakdown was studied, determining also the kinetic parameters of the break own process: rate constants and half-times of breakdown. This process agreed, as a rule, with the kinetic equation of first order and depended on the type of water, initial concentration, temperature and microflora adaptation to the environment of the tested substance. The process of carbendazime breakdown after adaptation of the microorganisms of river water to the fungicide was occuring at a much higher rate at both test temperature and depended on the initial concentration. Temperature decrease to about 5°C inhibited the process of carbendazime degradation, but only if the initial concentraion was higher. The concentrations of carbendazime in aqueous environment under dynamic conditions during 14-day exposure decreased by 14-19% and had no negative influence on the biocenosis of the experimental ecosystem Carbendazime was not taken up by water-thyme and Lebistes reticulata in the experimental ecosystem, was poorly concentrated by snails and accumulated slightly in the sediments of the ecosystem.

Słowa kluczowe

PL

rozklad pestycydow; fungicydy; ochrona wod; karbendazym; zanieczyszczenia srodowiska

EN

pesticide degradation; fungicide; water protection; carbendazim; environment contaminant

• Wydawca: -
• Czasopismo: Roczniki Państwowego Zakładu Higieny
• Rocznik: 1995
• Tom: 46
• Numer: 2
• Opis fizyczny: s.183-192,wykr.,tab.,bibliogr.

Twórcy

autor

Bogacka T.

• Instytut Meteorologii i Gospodarki Wodnej, Gdansk