Abstract:
Modelling investigation have been performed for determination of estimated
concentrations of pesticides in water and for hazard categories. Estimated
human daily intake, predicted environmental concentration (PEC) and hazard
categories for aquatic life were evaluated by USES for 275 pesticides and
by HESP model for 99 of them. Calculation of PEC was performed for 313
pesticides with Mackay Level I model.
It may be concluded from the PEC data that 80% of
the herbicides have the potential to be present in ground water in more
than 50% of applied dose, 76% and 52% of the fungicides and insecticides,
respectively. The comparison of predicted and real concentration demonstrated
that PEC exceeded measured concentrations of almost all pesticides detected
in Danube and tributaries’ water. Comparison of hazard classification showed
that hazard categories obtained by HESP are higher than by USES. There
is a correspondence in the ranging by hazard obtained by two models. These
results demonstrated that both models may be used for ranging pesticides
by hazard.
Human daily intake calculated by HESP is higher
than this by USES. There is good correspondent in hazard. Some calculated
daily intake by HESP is higher then ADI. The appropriate use and limitations
of the models should be emphasised.
| Received: 16 June 1998
Accepted: 03 December 1998 Posted: 2 March 1999 |
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