The use of a simple model for the regulatory environmental risk assessment of pesticides in Ethiopia

Berhan M. Teklu, Sevil Deniz Yakan, Paul J. Van den Brink*

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2 Atıf (Scopus)

Özet

Pesticide registration in developing countries like Ethiopia is often not supported by substantiated risk assessment procedures. In this study, we evaluated the PRIMET (Pesticide Risks in the Tropics for Man, Environment and Trade) Registration_Ethiopia_1.1 model which is a tool developed to assess the risks to non-target protection goals. All the 103 registered active ingredients (a.i.) in Ethiopia, except those used for flower and storage pest control purposes, were evaluated on their environmental risks. Data on physico-chemical characteristics, toxicity and pesticide use patterns were mined from either the information given in the dossier or public databases. Together with scenarios specifically developed for Ethiopia, these data were used to perform a risk assessment for the aquatic and terrestrial environment as well as for vertebrates including humans via contaminated drinking water exposure. Results indicated that 11 and 16% of the a.i.s are indicated to pose high acute risk and 7.3 and 11% high chronic risks for fish and aquatic invertebrates, respectively. Similarly, 5.5 and 8.7% high acute risks and 6.8 and 3.9% high chronic risks were observed for the soil ecosystem and birds, respectively. 23% of the evaluated active ingredients were indicated to be highly risky to bees when beehives are present inside the sprayed crop while 7.8% of them are highly risky when beehives are present outside the field of the sprayed crop. The fungicide metalaxyl, the herbicides acetochlor, alachlor, mecoprop and tembotrion, and the insecticides carbaryl, chlorpyrifos, diazinon and methidathion were predicted to pose high acute or chronic risks to humans or other vertebrates if surface water is used as a source of drinking water. Future studies should give emphasis on how the risk assessment results of this study can be implemented to aid the registration process.

Orijinal dilİngilizce
Makale numarası137794
DergiChemosphere
Hacim316
DOI'lar
Yayın durumuYayınlandı - Mar 2023

Bibliyografik not

Publisher Copyright:
© 2023 The Authors

Finansman

This study has been performed in the context of the post-doctoral project titled ‘Mapping of aquatic ecological pollutants and risk assessment at the central rift valley of Ethiopia’ which is funded by Istanbul Technical University Scientific Research Projects Unit (ITU – BAP Project Code: MAB-2020-42229 ).

FinansörlerFinansör numarası
International Technological University
British Association for PsychopharmacologyMAB-2020-42229
Bilimsel Araştırma Projeleri Birimi, İstanbul Teknik Üniversitesi

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