Your browser doesn't support javascript.
loading
Aerobic dissipation of avermectins and moxidectin in subtropical soils and dissipation of abamectin in a field study.
de Oliveira Ferreira, Fabrício; Porto, Rafael Silveira; Rath, Susanne.
Afiliação
  • de Oliveira Ferreira F; Institute of Chemistry, Department of Analytical Chemistry, University of Campinas, P.O. Box 6154, 13084-970, Campinas, SP, Brazil.
  • Porto RS; Institute of Chemistry, Department of Analytical Chemistry, University of Campinas, P.O. Box 6154, 13084-970, Campinas, SP, Brazil.
  • Rath S; Institute of Chemistry, Department of Analytical Chemistry, University of Campinas, P.O. Box 6154, 13084-970, Campinas, SP, Brazil. Electronic address: rath@unicamp.br.
Ecotoxicol Environ Saf ; 183: 109489, 2019 Nov 15.
Article em En | MEDLINE | ID: mdl-31394379
Avermectins and moxidectin are antiparasitics widely used as active pharmaceutical ingredients in veterinary medicine, as well as in pesticide formulations for pest control in agriculture. Although the use of these compounds provides benefits to agribusiness, they can impact the environment, since a large part of these substances may reach the soil and water from the excreta of treated animals and following direct applications to crops. The present work had the objective of evaluating the dissipation behaviors of abamectin, doramectin, eprinomectin, ivermectin, and moxidectin in four native Brazilian soils of different textural classes (clay, sandy-clay, sandy, and sandy-clay-loam), following OECD Guideline 307. The studies were conducted in a climate chamber at 22 °C, 71% relative humidity, and protected from light. The dissipation studies were carried out with all drugs together, since no difference was verified when studies were done with each drug separately. The concentrations of the drugs in the soils were determined using an ultra-high performance liquid chromatograph coupled to a fluorescence detector or a tandem mass spectrometer. The dissipation half-life (DT50) values ranged from 9 to 16 days and the calculated GUS index values were in the range from -1.10 to 0.08, indicating low mobility of the drugs in the soils evaluated and low tendency for leaching. In addition, a field study was carried out to evaluate the dissipation of abamectin after application of a foliar pesticide in an orange crop. A DT50 of 9 days was determined, which was similar to that obtained under controlled conditions in the climate chamber (12 days), indicating that biotransformation was the primary process influencing the overall dissipation.
Assuntos
Palavras-chave
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Praguicidas / Solo / Poluentes do Solo / Ivermectina / Macrolídeos / Antiparasitários País/Região como assunto: America do sul / Brasil Idioma: En Revista: Ecotoxicol Environ Saf Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Praguicidas / Solo / Poluentes do Solo / Ivermectina / Macrolídeos / Antiparasitários País/Região como assunto: America do sul / Brasil Idioma: En Revista: Ecotoxicol Environ Saf Ano de publicação: 2019 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda