Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.5/5744
Título: Avaliação do risco de pesticidas individuais e suas misturas em águas de superfície
Outros títulos: Risk assessment of individual pesticides and their mixtures in surface waters
Autor: Silva, Emilia
Cerejeira, Maria José
Palavras-chave: aquatic ecosystem
environmental risk
individual pesticide
pesticide mixtures
surface water
Data: 2012
Editora: SCAP
Citação: "Revista de Ciências Agrárias". ISSN 0871-018x. 35 (2) (2012) 32-42
Resumo: This study aims to evaluate the risk of pesticides and their mixtures in surface waters of agricultural areas of the Golegã council. From 12 pesticides analysed by SPME/ GC-MS, the priority substances alachlor, atrazine, chlorfenvinphos, chlorpyrifos and other pollutants (3,4-DCA, ethofumesate, metolachlor and terbuthylazine) were detected. Alachlor and chlorpyrifos were determined with concentrations higher than their respective environmental quality standards for surface waters. According to the toxic unit summation method, only in two samples collected at Alverca do Campo were expected elicit effects larger than 50% on Daphnia and algae, due mainly to chlorfenvinphos and alachlor, respectively. The application of this method enables to use the existing information on risk assessment of individual pesticides, requiring only more demanding research and evaluation of the need of risk mitigation measures for those pesticides with greater aquatic risk in the mixtures
URI: http://hdl.handle.net/10400.5/5744
ISSN: 0871-018x
Aparece nas colecções:DCEB - Artigos de Revistas

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