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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.
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Embrapa Instrumentação (CNPDIA) |
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Registro Completo
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
18/01/2024 |
Data da última atualização: |
18/01/2024 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 4 |
Autoria: |
KAFER, J. M.; MOLINARI, M. D. C.; HENNING, F. A.; KOLTUN, A.; MARQUES, V. V.; MARIN, S. R. R.; NEPOMUCENO, A. L.; MERTZ-HENNING, L. M. |
Afiliação: |
JOÃO M. KAFER, LONDRINA STATE UNIVERSITY; MAYLA D. C. MOLINARI, ARTHUR BERNARDES FOUNDATION; FERNANDO AUGUSTO HENNING, CNPSO; ALESSANDRA KOLTUN, STATE UNIVERSITY OF MARINGÁ; VIVIANI V. MARQUES, ARTHUR BERNARDES FOUNDATION; SILVANA REGINA ROCKENBACH MARIN, CNPSO; ALEXANDRE LIMA NEPOMUCENO, CNPSO; LILIANE MARCIA MERTZ HENNING, CNPSO. |
Título: |
Transcriptional profile of soybean seeds with contrasting seed coat color. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Plants, v. 12, n. 7, 1555, 2023. |
Páginas: |
19 p. |
DOI: |
10.3390/ plants12071555 |
Idioma: |
Inglês |
Thesagro: |
Lignina; Produto Armazenado; Semente; Soja. |
Thesaurus NAL: |
Lignin; Seed storage; Seeds; Soybeans; Storage. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
Marc: |
LEADER 00856naa a2200325 a 4500 001 2160960 005 2024-01-18 008 2023 bl uuuu u00u1 u #d 024 7 $a10.3390/ plants12071555$2DOI 100 1 $aKAFER, J. M. 245 $aTranscriptional profile of soybean seeds with contrasting seed coat color.$h[electronic resource] 260 $c2023 300 $a19 p. 650 $aLignin 650 $aSeed storage 650 $aSeeds 650 $aSoybeans 650 $aStorage 650 $aLignina 650 $aProduto Armazenado 650 $aSemente 650 $aSoja 700 1 $aMOLINARI, M. D. C. 700 1 $aHENNING, F. A. 700 1 $aKOLTUN, A. 700 1 $aMARQUES, V. V. 700 1 $aMARIN, S. R. R. 700 1 $aNEPOMUCENO, A. L. 700 1 $aMERTZ-HENNING, L. M. 773 $tPlants$gv. 12, n. 7, 1555, 2023.
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