Host-Guest Interaction between Herbicide Oxadiargyl and Hydroxypropyl-beta-Cyclodextrin

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

Sofia Benfeito (Autor) Outra; Tiago Rodrigues (Autor) Outra; Jorge Garrido (Autor) Outra; Fernanda Borges (Autor) FCUP; Manuela M Garrido (Autor) Outra

Revista

Título: The Scientific World Journal

Vol. 2013

ISSN: 2356-6140

Editora: Hindawi

Indexação

ISI Web of Knowledge - 9 Citações

Scopus - 6 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

CORDIS: Ciências Físicas > Química > Química aplicada

Outras Informações

ID Authenticus: P-006-KAK

Abstract (EN): In the face of a growing human population and increased urbanization, the demand for pesticides will simply rise. Farmers must escalate yields on increasingly fewer farm acres. However, the risks of pesticides, whether real or perceived, may force changes in the way these chemicals are used. Scientists are working toward pest control plans that are environmentally sound, effective, and profitable. In this context the development of new pesticide formulations which may improve application effectiveness, safety, handling, and storage can be pointed out as a solution. As a contribution to the area, the microencapsulation of the herbicide oxadiargyl (OXA) in (2-hydroxypropyl)-beta-cyclodextrin (HP-beta-CD) was performed. The study was conducted in different aqueous media (ultrapure water and in different pH buffer solutions). In all cases an increment of the oxadiargyl solubility as a function of the HP-beta-CD concentration that has been related to the formation of an inclusion complex was verified. UV-Vis and NMR experiments allowed concluding that the stoichiometry of the OXA/HP-beta-CD complex formed is 1:1. The gathered results can be regarded as an important step for its removal from industrial effluents and/or to increase the stabilizing action, encapsulation, and adsorption in water treatment plants.

Idioma: Inglês

Tipo (Avaliação Docente): Científica