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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
14/04/2008 |
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Data da última atualização: |
15/04/2008 |
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Tipo da produção científica: |
Folder/Folheto/Cartilha |
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Autoria: |
SANTOS, C. M. A. dos; RESENDE, A. L. S.; CAMPOS, J. M.; AGUIAR-MENEZES, E. de L. |
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Afiliação: |
Carlos Marcos Alves dos Santos, UFRRJ; André Luis Santos Resende, UFRRJ; Juliana Mendonça Campos, UFRRJ; Elen de Lima Aguiar-Menezes, Embrapa Agrobiologia. |
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Título: |
Infestação de frutos de seis cultivares de café Arábica pela broca-de-café em sistema orgânico com e sem arborização. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Seropédica: Embrapa Agrobiologia, 2007. |
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Páginas: |
4 p. |
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Idioma: |
Português |
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Notas: |
Parceria: UFRRJ.
Trabalho apresentado na XVI Jornada de Iniciação Científica da UFRRJ, Seropédica/RJ, 21 a 23 de novembro de 2007. |
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Palavras-Chave: |
Sistema orgânico. |
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Thesagro: |
Árvore; Café. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00714nam a2200193 a 4500
001 1623905
005 2008-04-15
008 2007 bl uuuu u0uu1 u #d
100 1 $aSANTOS, C. M. A. dos
245 $aInfestação de frutos de seis cultivares de café Arábica pela broca-de-café em sistema orgânico com e sem arborização.
260 $aSeropédica: Embrapa Agrobiologia$c2007
300 $a4 p.
500 $aParceria: UFRRJ. Trabalho apresentado na XVI Jornada de Iniciação Científica da UFRRJ, Seropédica/RJ, 21 a 23 de novembro de 2007.
650 $aÁrvore
650 $aCafé
653 $aSistema orgânico
700 1 $aRESENDE, A. L. S.
700 1 $aCAMPOS, J. M.
700 1 $aAGUIAR-MENEZES, E. de L.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
20/07/1999 |
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Data da última atualização: |
12/12/2019 |
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Autoria: |
BONATO, P. S.; LANCHOTE, V. L.; DREOSSI, A. de C. |
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Afiliação: |
EMBRAPA-CNPMA. |
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Título: |
High performance liquid chromatographic screening and gas chromatography-nass spectrometry confirmation of tebuthiuron residues in drinking water. |
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Ano de publicação: |
1999 |
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Fonte/Imprenta: |
Journal of High Resolution Cromatography, v.22, n.4, p.239-241, 1999. |
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Páginas: |
p. 239-241 |
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Idioma: |
Inglês |
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Conteúdo: |
Tebuthiuron (N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]-N,N-dimethylurea) is a phenylurea herbicide used in sugar cane culture for the pre- and post-emergence control of weeds [1,2]. Analysis of tebuthiuron (Figure 1) and of other phenylurea herbicides in environmental samples can be performed by HPLC [3-10], or by gas chromatography using selective detectors such as nitrogen-prosphorus detector (NPD), eletron-capture detector (ECD), or a mass spectrometer (MS) [11-16]. Although Loh et al [17] reported that the use of temperatures above 280oC permits quantitative tebuthiuron breakdown, thus permitting the analysis of the products of decomposition formed, methods based on gas chromatography usually involve a derivatization step to permit analysis of this thermal unstable herbicide in its unchanged form [11,12,18]. These methods have been applied to the determination of tebuthiuron residues in soil, foods, and plant material but none of them has been reported for the evaluation of this compound in water. In the present study we describe two methods for tebuthiuron analysis in water samples. The samples were first analyzed by HPLC and the results were confirmed by GC-MS after acetic anhydride derivatization. The methods were applied to the analysis of this herbicide in surface and ground water samples colected from the Espraiado Stream watershed (Ribeirao Preto region, state of Sao Paulo, Brazil). This watershed represents one of the reloading points of the Botucatu ground water table, the largest and most important one in the center-south region of Brasil, including eight Brazilian states and parts of Argentina, Uruguay, and Paraguay, and covering an area of approximately 1.200.000 km2 [19]. MenosTebuthiuron (N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]-N,N-dimethylurea) is a phenylurea herbicide used in sugar cane culture for the pre- and post-emergence control of weeds [1,2]. Analysis of tebuthiuron (Figure 1) and of other phenylurea herbicides in environmental samples can be performed by HPLC [3-10], or by gas chromatography using selective detectors such as nitrogen-prosphorus detector (NPD), eletron-capture detector (ECD), or a mass spectrometer (MS) [11-16]. Although Loh et al [17] reported that the use of temperatures above 280oC permits quantitative tebuthiuron breakdown, thus permitting the analysis of the products of decomposition formed, methods based on gas chromatography usually involve a derivatization step to permit analysis of this thermal unstable herbicide in its unchanged form [11,12,18]. These methods have been applied to the determination of tebuthiuron residues in soil, foods, and plant material but none of them has been reported for the evaluation of this compound in water. In the present study we describe two methods for tebuthiuron analysis in water samples. The samples were first analyzed by HPLC and the results were confirmed by GC-MS after acetic anhydride derivatization. The methods were applied to the analysis of this herbicide in surface and ground water samples colected from the Espraiado Stream watershed (Ribeirao Preto region, state of Sao Paulo, Brazil). This watershed represents one of the reloading points of the Botucatu ground... Mostrar Tudo |
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Palavras-Chave: |
Analysis; Contamination; Residues. |
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Thesaurus NAL: |
calibration; environmental impact; groundwater; herbicides; quality control. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/199598/1/Bonato-High.pdf
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Marc: |
LEADER 02510naa a2200253 a 4500
001 1013136
005 2019-12-12
008 1999 bl uuuu u00u1 u #d
100 1 $aBONATO, P. S.
245 $aHigh performance liquid chromatographic screening and gas chromatography-nass spectrometry confirmation of tebuthiuron residues in drinking water.$h[electronic resource]
260 $c1999
300 $ap. 239-241
520 $aTebuthiuron (N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]-N,N-dimethylurea) is a phenylurea herbicide used in sugar cane culture for the pre- and post-emergence control of weeds [1,2]. Analysis of tebuthiuron (Figure 1) and of other phenylurea herbicides in environmental samples can be performed by HPLC [3-10], or by gas chromatography using selective detectors such as nitrogen-prosphorus detector (NPD), eletron-capture detector (ECD), or a mass spectrometer (MS) [11-16]. Although Loh et al [17] reported that the use of temperatures above 280oC permits quantitative tebuthiuron breakdown, thus permitting the analysis of the products of decomposition formed, methods based on gas chromatography usually involve a derivatization step to permit analysis of this thermal unstable herbicide in its unchanged form [11,12,18]. These methods have been applied to the determination of tebuthiuron residues in soil, foods, and plant material but none of them has been reported for the evaluation of this compound in water. In the present study we describe two methods for tebuthiuron analysis in water samples. The samples were first analyzed by HPLC and the results were confirmed by GC-MS after acetic anhydride derivatization. The methods were applied to the analysis of this herbicide in surface and ground water samples colected from the Espraiado Stream watershed (Ribeirao Preto region, state of Sao Paulo, Brazil). This watershed represents one of the reloading points of the Botucatu ground water table, the largest and most important one in the center-south region of Brasil, including eight Brazilian states and parts of Argentina, Uruguay, and Paraguay, and covering an area of approximately 1.200.000 km2 [19].
650 $acalibration
650 $aenvironmental impact
650 $agroundwater
650 $aherbicides
650 $aquality control
653 $aAnalysis
653 $aContamination
653 $aResidues
700 1 $aLANCHOTE, V. L.
700 1 $aDREOSSI, A. de C.
773 $tJournal of High Resolution Cromatography$gv.22, n.4, p.239-241, 1999.
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Embrapa Meio Ambiente (CNPMA) |
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