Investigação de traços de pesticidas em águas superficiais do Rio Branco e no efluente de uma rizicultura irrigada no estado de Roraima

• Ano de defesa: 2011
• Autor(a) principal: Farias, Leovergildo Rodrigues
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Roraima; Brasil; PRPPG - Pró-Reitoria de Pesquisa e Pós-Graduação; PPGQ - Programa de Pós-Graduação em Química; UFRR
• Palavras-chave em Português: Química analítica; Qualidade da água; Pesticidas; Arroz; Roraima; Pesticides; Paration Methyl; CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA
• Link de acesso: http://repositorio.ufrr.br:8080/jspui/handle/prefix/74

The use of pesticides in agriculture is considered a major cause of contamination of surface and groundwater. These infections occur mainly by the action of rain water and irrigation causing the leaching processes, drainage and disposal of pesticides on crops and soil, which will reach streams or reservoirs. The State of Roraima presents the cultivation of rice irrigated as predominant economic activity, increasing this cultivation form annually, ally to this fact, possibly an increase exists in the amount of used pesticides. Being like this, the objective of this work was to investigate the occurrence of lines of the pesticide organofosforado paration methyl and of the organoclorados endrin, dieldrin and aldrin in surface waters of the White river and in the efluente of a rizicultura irrigated in the State of Roraima, using the technique of the extraction in solid phase and the cromatografia in gaseous phase coupled to the mass espectrometria.