A case study of molinate application in a Portuguese rice field: herbicide dissipation and proposal of a clean-up methodology

• Tipo: Artigo em Revista Científica Internacional
• Data: 2005

Autores

Castro, M (Autor) Outra; Silva Ferreira, AC (Autor) Outra; Manaia, UM (Autor) Outra; Nunes, OC (Autor) FEUP

Revista

Título: Chemosphere

Vol. 59 Nº 7

Páginas: 1059-1065

ISSN: 0045-6535

Editora: Elsevier

Indexação

ISI Web of Knowledge - 24 Citações

ISI Web of Science

Scopus - 27 Citações

COMPENDEX

Classificação Científica

FOS: Ciências exactas e naturais > Ciências da terra e ciências do ambiente

Outras Informações

ID Authenticus: P-000-3G0

DOI: 10.1016/j.chemosphere.2004.11.041

Abstract (EN): This study was designed to monitor molinate losses in surface and underground waters during Ordram application in a rice field situated in central Portugal. Water samples were collected from different sites, before, during and about one month and a half after Ordram application. Molinate quantification was based on a solid-phase microextraction (SPME) method followed by gas chromatography with flame photometric detector (GC-FPD) analysis, and led to the conclusion that the herbicide was dissipated in the environment, reaching levels as high as 3.9 mu g l(-1) in underground water and 15.8 mu g l(-1) in the river receiving tail waters. The feasibility of the application of treatment methodologies based on adsorption or biodegradation as processes to remove molinate from real-world waters was assessed. These methods seem suitable to reduce molinate concentrations to values in the range of the legally recommended limits (< 0.5 mu g l(-1)).

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7