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| Registros recuperados : 94 | |
| 11. |  | VARGAS, D. P; NACHTIGALL, G. R.; SIMÕES, F. Efeito da irrigação e fertirrigação na coloração da película, firmeza e sólidos solúveis totais de maçãs "Galaxy", na região dos Campos de Cima da Serra, RS. In: ENCONTRO NACIONAL DE FRUTICULTURA DE CLIMA TEMPERADO, 15., 2017, Fraiburgo, SC. Anais... Fraiburgo, SC:ENFRUTE, 2017.| Biblioteca(s): Embrapa Uva e Vinho. |
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| 12. | | ZARATE, N. A. H.; VIEIRA, M. do C.; SIMÕES. F. Formas de adição ao solo de cama-de-frango de corte na produção de cinco clones de inhame. Horticultura Brasileira, Brasília, v. 22, n. 2, jul. 2004. Suplemento 2. Trabalho apresentado no 44º Congresso Brasileiro de Olericultura, 2004. Publicado também como resumo em: Horticultura Brasileira, Brasília, v. 22, n. 2, p. 487, jul. 2004. Suplemento.| Biblioteca(s): Embrapa Hortaliças. |
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| 13. | | GRAZIA, J.; SIMÕES, F. L.; PANIZZI, A. R. Morphology, ontogeny, reproduction, and feeding of true bugs. In: PANIZZI, A. R.; GRAZIA, J. True bugs (Heteroptera) of the neotropics. Dordrecht: Springer Science+Business Media, 2015. Part. 1, cap. 2, p. 21-55. (Entomology in Focus, 2).| Biblioteca(s): Embrapa Trigo. |
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| 14. | | SIMÕES, F.; HAWERROTH, F. J.; SANT'ANNA, V.; CASTILHOS, M.; SANTOS, D. M. M. dos. Ensaios apresentam ótimas perspectivas de produção de mirtileiros com alto requerimento de frio e potencial de desenvolvimento de agroindústrias nos Campos de Cima da Serra. Jornal da Fruta, São Joaquim, SC, n. 28, v. 328, p. 10, jun. 2018.| Biblioteca(s): Embrapa Uva e Vinho. |
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| 17. | | ALVES, D. L.; FANTINELL, J.; COELHO, J. R. M.; SIMÕES, F. C. H.; BARBOSA, R. A. Avaliação agronômica e desempenho animal em acessos de Brachiaria humidicola. In: JORNADA CIENTÍFICA DA EMBRAPA GADO DE CORTE, 2., 2006, Campo Grande, MS. Anais [da]... 2. ed. Campo Grande, MS: Embrapa Gado de Corte, 2006. 1 p. 1 CD-ROM. CNPGC.| Biblioteca(s): Embrapa Gado de Corte. |
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| 18. | | GOULARTE, N. A. A.; HAWERROTH, F. J.; MACEDO, C. K. B.; MAGRIN, F. P.; SIMÕES, F. Aumento da frutificação de macieiras "Galaxy" e "Fuji Suprema" pelo uso de proexadiona de cálcio. Agropecuária Catarinense, Florianópolis, SC, v. 29, n. 2, p. 160, maio/ago. 2016. Resumo nº 52. SENAFRUT - Seminário Nacional sobre Fruticultura de Clima temperado, São Joaquim, SC, 14 a 16 de junho 2016.| Biblioteca(s): Embrapa Uva e Vinho. |
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| Registros recuperados : 94 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
23/03/2005 |
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Data da última atualização: |
23/03/2005 |
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Autoria: |
SIMÕES, F. R. |
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Título: |
New electrode material for the electrochemical determination of 2,4 Diclorophenoxyacetic acid herbicide (2,4D). |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
In: ENCONTRO DA SOCIEDADE BRASILEIRA DE PESQUISA EM MATERIAIS, SBPMAT, 2., out. 2003., Rio de Janeiro, RJ. Programa e Livro de resumos... Rio de Janeiro: SBPMat, 2003. Ref. A-P49. |
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Idioma: |
Inglês |
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Conteúdo: |
Conducting polymers have been used in many technological and scientific research applications. Due to the necessity of active materiais and great demand for different applications, the conducting polymer allows an increasing of versatility for the construction of sensors. In agriculture, in particular, the uncontrolled use of pesticide has been causing a great environmental impact, as for example the groundwater and surface water contamination. The most popular methods of pesticide analysis are the chromatographics mainly the HPLC and gas chromatography. These methods are sensible and selective, but they are laborious and expensive. Electroanalytical techniques have aIso been used as methods for pesticides determination in natural waters, soils, vegetables, fruits and other matrices. The main advantage of this method is the possibility of determining its concentration without previous treatments or separations. This work presents a new modified electrode for the determination of the herbicide 2,4 diclorophenoxyacetic acid (2,4D). This compound is known as not electroactive in electrodes as mercury, platinum and carbon (glassy, fiber or paste), but a new composite material consisting of carbon paste electrode and the conducting polymer polyaniline (PANI) was prepared, showing electroactivy and therefore, the possibility of the pesticide determination using electrochemical techniques. The analyses of the herbicide was carried out through cyclic voltammetry (C. V) in different pHs. The results showed good sensitivity and selectivity. MenosConducting polymers have been used in many technological and scientific research applications. Due to the necessity of active materiais and great demand for different applications, the conducting polymer allows an increasing of versatility for the construction of sensors. In agriculture, in particular, the uncontrolled use of pesticide has been causing a great environmental impact, as for example the groundwater and surface water contamination. The most popular methods of pesticide analysis are the chromatographics mainly the HPLC and gas chromatography. These methods are sensible and selective, but they are laborious and expensive. Electroanalytical techniques have aIso been used as methods for pesticides determination in natural waters, soils, vegetables, fruits and other matrices. The main advantage of this method is the possibility of determining its concentration without previous treatments or separations. This work presents a new modified electrode for the determination of the herbicide 2,4 diclorophenoxyacetic acid (2,4D). This compound is known as not electroactive in electrodes as mercury, platinum and carbon (glassy, fiber or paste), but a new composite material consisting of carbon paste electrode and the conducting polymer polyaniline (PANI) was prepared, showing electroactivy and therefore, the possibility of the pesticide determination using electrochemical techniques. The analyses of the herbicide was carried out through cyclic voltammetry (C. V) in different ... Mostrar Tudo |
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Palavras-Chave: |
Pesticidas; Polímeros condutores. |
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Categoria do assunto: |
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Marc: |
LEADER 02136naa a2200145 a 4500
001 1028888
005 2005-03-23
008 2003 bl --- 0-- u #d
100 1 $aSIMÕES, F. R.
245 $aNew electrode material for the electrochemical determination of 2,4 Diclorophenoxyacetic acid herbicide (2,4D).
260 $c2003
520 $aConducting polymers have been used in many technological and scientific research applications. Due to the necessity of active materiais and great demand for different applications, the conducting polymer allows an increasing of versatility for the construction of sensors. In agriculture, in particular, the uncontrolled use of pesticide has been causing a great environmental impact, as for example the groundwater and surface water contamination. The most popular methods of pesticide analysis are the chromatographics mainly the HPLC and gas chromatography. These methods are sensible and selective, but they are laborious and expensive. Electroanalytical techniques have aIso been used as methods for pesticides determination in natural waters, soils, vegetables, fruits and other matrices. The main advantage of this method is the possibility of determining its concentration without previous treatments or separations. This work presents a new modified electrode for the determination of the herbicide 2,4 diclorophenoxyacetic acid (2,4D). This compound is known as not electroactive in electrodes as mercury, platinum and carbon (glassy, fiber or paste), but a new composite material consisting of carbon paste electrode and the conducting polymer polyaniline (PANI) was prepared, showing electroactivy and therefore, the possibility of the pesticide determination using electrochemical techniques. The analyses of the herbicide was carried out through cyclic voltammetry (C. V) in different pHs. The results showed good sensitivity and selectivity.
653 $aPesticidas
653 $aPolímeros condutores
773 $tIn: ENCONTRO DA SOCIEDADE BRASILEIRA DE PESQUISA EM MATERIAIS, SBPMAT, 2., out. 2003., Rio de Janeiro, RJ. Programa e Livro de resumos... Rio de Janeiro: SBPMat, 2003. Ref. A-P49.
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