| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Instrumentação. |
|
Data corrente: |
23/03/2005 |
|
Data da última atualização: |
23/03/2005 |
|
Autoria: |
SIMÕES, F. R. |
|
Título: |
New electrode material for the electrochemical determination of 2,4 Diclorophenoxyacetic acid herbicide (2,4D). |
|
Ano de publicação: |
2003 |
|
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. |
|
Idioma: |
Inglês |
|
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 |
|
Palavras-Chave: |
Pesticidas; Polímeros condutores. |
|
Categoria do assunto: |
-- |
|
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.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Instrumentação (CNPDIA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Amazônia Oriental. Para informações adicionais entre em contato com cpatu.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Amazônia Oriental. |
|
Data corrente: |
13/11/2023 |
|
Data da última atualização: |
13/11/2023 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 2 |
|
Autoria: |
PAULETTO, D.; MARTORANO, L. G.; LOPES, L. S. de S.; BENTES, M. P. de M.; VIEIRA, T. A.; OLIVEIRA, T. G. de S.; SOUSA, V. S. de; SILVA, A. F. da; LIMA, P. da S. F. de; TRIBUZY, A. S.; GUIMARÃES, I. V. P. |
|
Afiliação: |
DANIELA PAULETTO, UNIVERSIDADE FEDERAL DO OESTE DO PARÁ; LUCIETA GUERREIRO MARTORANO, CPATU; LUCAS SÉRGIO DE SOUSA LOPES, UNIVERSIDADE FEDERAL DE VIÇOSA; MICHELLINY PINHEIRO DE MATOS BENTES, CPATU; THIAGO ALMEIDA VIEIRA, UNIVERSIDADE FEDERAL DO OESTE DO PARÁ; THIAGO GOMES DE SOUSA OLIVEIRA, UNIVERSIDADE ESTADUAL DE PONTA GROSSA; VERENA SANTOS DE SOUSA, UNIVERSIDADE FEDERAL DO PARANÁ; ÁDRIA FERNANDES DA SILVA, INSTITUTO NACIONAL DE PESQUISA DA AMAZÔNIA; PRICILA DA SILVA FERREIRA DE LIMA, UNIVERSIDADE FEDERAL DO OESTE DO PARÁ; ALDEIZE SANTOS TRIBUZY, INSTITUTO NACIONAL DE PESQUISAS DA AMAZÔNIA; IANDRA VICTÓRIA PINTO GUIMARÃES, UNIVERSIDADE FEDERAL DO OESTE DO PARÁ. |
|
Título: |
Plant composition and species use in agroforestry homegardens in the Eastern Amazon, Brazil. |
|
Ano de publicação: |
2023 |
|
Fonte/Imprenta: |
Sustainability, v. 15, 11269, 2023. |
|
DOI: |
https://doi.org/10.3390/su151411269 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Agroforestry home gardens are integrated arrangements of common vegetable plants near residences, resembling tropical forests. They cultivate multiple species to meet families? basic needs, including food, medicine, and family activities. This study aimed to assess the composition and use of plant species in agroforestry home gardens in three municipalities in the western region of Pará. The study analyzed 119 home gardens in Belterra, Mojuí dos Campos, and Santarém in Pará, Brazilian Amazonia. These home gardens span peri-urban, urban, floodplain, indigenous, and tourist land zones. Data were collected through questionnaires and visits, surveying 5323 plants from 188 species and 62 plant families. The findings revealed that 80.5% of plants concentrated in just 18.6% of the species, with no significant difference in species per home garden across zones. Notably, food species, particularly fruit-bearing plants, dominated these home gardens. This indicates a potential emphasis on incentive programs and public policies. Most home gardens contained up to 17 plant species, while less than half included medicinal plants. Native and exotic species were equally represented, with native plants valued for shading benefits. Agroforestry home gardens are vital for conserving and cultivating food species. Their specific purposes influence species distribution and selection, showcasing their socioeconomic and environmental significance. Thus, recognizing and investing in these land-use systems is crucial to maintain and enhance regional benefits. MenosAgroforestry home gardens are integrated arrangements of common vegetable plants near residences, resembling tropical forests. They cultivate multiple species to meet families? basic needs, including food, medicine, and family activities. This study aimed to assess the composition and use of plant species in agroforestry home gardens in three municipalities in the western region of Pará. The study analyzed 119 home gardens in Belterra, Mojuí dos Campos, and Santarém in Pará, Brazilian Amazonia. These home gardens span peri-urban, urban, floodplain, indigenous, and tourist land zones. Data were collected through questionnaires and visits, surveying 5323 plants from 188 species and 62 plant families. The findings revealed that 80.5% of plants concentrated in just 18.6% of the species, with no significant difference in species per home garden across zones. Notably, food species, particularly fruit-bearing plants, dominated these home gardens. This indicates a potential emphasis on incentive programs and public policies. Most home gardens contained up to 17 plant species, while less than half included medicinal plants. Native and exotic species were equally represented, with native plants valued for shading benefits. Agroforestry home gardens are vital for conserving and cultivating food species. Their specific purposes influence species distribution and selection, showcasing their socioeconomic and environmental significance. Thus, recognizing and investing in these land-use sy... Mostrar Tudo |
|
Palavras-Chave: |
Agrobiodiversidade; Agrobiodiversity; Agroecossistema; Jardins domésticos; Policultura; Polyculture. |
|
Thesagro: |
Jardim. |
|
Thesaurus NAL: |
Agroecosystems; Home gardens. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
Marc: |
LEADER 02608naa a2200361 a 4500
001 2158259
005 2023-11-13
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.3390/su151411269$2DOI
100 1 $aPAULETTO, D.
245 $aPlant composition and species use in agroforestry homegardens in the Eastern Amazon, Brazil.$h[electronic resource]
260 $c2023
520 $aAgroforestry home gardens are integrated arrangements of common vegetable plants near residences, resembling tropical forests. They cultivate multiple species to meet families? basic needs, including food, medicine, and family activities. This study aimed to assess the composition and use of plant species in agroforestry home gardens in three municipalities in the western region of Pará. The study analyzed 119 home gardens in Belterra, Mojuí dos Campos, and Santarém in Pará, Brazilian Amazonia. These home gardens span peri-urban, urban, floodplain, indigenous, and tourist land zones. Data were collected through questionnaires and visits, surveying 5323 plants from 188 species and 62 plant families. The findings revealed that 80.5% of plants concentrated in just 18.6% of the species, with no significant difference in species per home garden across zones. Notably, food species, particularly fruit-bearing plants, dominated these home gardens. This indicates a potential emphasis on incentive programs and public policies. Most home gardens contained up to 17 plant species, while less than half included medicinal plants. Native and exotic species were equally represented, with native plants valued for shading benefits. Agroforestry home gardens are vital for conserving and cultivating food species. Their specific purposes influence species distribution and selection, showcasing their socioeconomic and environmental significance. Thus, recognizing and investing in these land-use systems is crucial to maintain and enhance regional benefits.
650 $aAgroecosystems
650 $aHome gardens
650 $aJardim
653 $aAgrobiodiversidade
653 $aAgrobiodiversity
653 $aAgroecossistema
653 $aJardins domésticos
653 $aPolicultura
653 $aPolyculture
700 1 $aMARTORANO, L. G.
700 1 $aLOPES, L. S. de S.
700 1 $aBENTES, M. P. de M.
700 1 $aVIEIRA, T. A.
700 1 $aOLIVEIRA, T. G. de S.
700 1 $aSOUSA, V. S. de
700 1 $aSILVA, A. F. da
700 1 $aLIMA, P. da S. F. de
700 1 $aTRIBUZY, A. S.
700 1 $aGUIMARÃES, I. V. P.
773 $tSustainability$gv. 15, 11269, 2023.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Amazônia Oriental (CPATU) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
