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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
03/12/2012 |
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Data da última atualização: |
21/07/2017 |
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Tipo da produção científica: |
Orientação de Tese de Pós-Graduação |
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Autoria: |
MORAIS, L. S. R. de. |
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Afiliação: |
Universidade Estadual de Campinas. Instituto de Química Programa de Pós-Graduação em Ciências. |
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Título: |
Desenvolvimento e validação de métodos para a determinação de agrotóxicos em água e solo das áreas de recarga de Aquífero Guarani, na região das nascentes do Rio Araguaia, MT/GO. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
2009. |
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Páginas: |
132 p. |
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Descrição Física: |
il. |
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Idioma: |
Português |
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Notas: |
Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica.
Orientação: Isabel C. S. F. Jardim - Co-Orientadora: Sonia Cláudia do Nascimento de Queiroz - Embrapa Meio Ambiente. |
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Conteúdo: |
Abstract: The area near the Araguaia River, between Goiás and Mato Grosso States, is the location of a portion of the recharging of the Guarani Aquifer, which is one of the world¿s largest aquifer systems and an important source of drinking water. This reservoir could be threatened by the widespread use of pesticides in maize and soybean cultivation in this area. Thus, this work developed analytical methods for the determination of imazethapyr, nicosulfuron, imazaquin, carbofuran, atrazine, linuron, clorimuronethyl and diflubenzuron, pesticides used in maize and soybean cultivation. Pesticide separation, identification and quantification were performed using High-Performance Liquid Chromatography with Diode Array Detection (HPLC-DAD) and Liquid Chromatography-Electrospray Ionization Tandem Mass Spectrometry (LC-ESI-MS/MS). Solid Phase Extraction (SPE) with C18 sorbents was optimized for sample extraction from water. Soil samples were extracted by mechanical shaking, sonication or microwave-assisted extraction with industrial and home microwave ovens. Methods were validated resulting in limits of quantification (LOQ) for the pesticides in water in the range of 0.015-0.1 ng mL, using SPE-HPLC-DAD, and 0.01 ng mL using LC-ESI-MS/MS. LOQ of 1 ng mL for all pesticides in soil were achieved using the home microwave oven and LC-ESI-MS/MS. Recoveries for pesticides with all methods were in the range 70-120 %. Relative standard deviations for repeatability and intermediate precision were less than 15 %. SPEHPLC- DAD and LC-ESI-MS/MS were employed for the analysis of samples of water from the recharge area and most of the pesticides were detected at concentrations below the minimum residue limit (MRL) of 0.1 ng mL established by the European Community. The home microwave oven and LC-ESI-MS/MS were used for the analysis of soil samples from two other regions of Brazil and the pesticides were not detected in these samples. Adsorption and desorption parameters were determined for imazethapyr, imazaquin, nicosulfuron and chlorimuron-ethyl, indicating that these pesticides have little affinity for the soil of the region of the Guarani Aquifer recharge, and show significant leaching potential, according to the ground water ubiquity score (GUS index) for these pesticides. MenosAbstract: The area near the Araguaia River, between Goiás and Mato Grosso States, is the location of a portion of the recharging of the Guarani Aquifer, which is one of the world¿s largest aquifer systems and an important source of drinking water. This reservoir could be threatened by the widespread use of pesticides in maize and soybean cultivation in this area. Thus, this work developed analytical methods for the determination of imazethapyr, nicosulfuron, imazaquin, carbofuran, atrazine, linuron, clorimuronethyl and diflubenzuron, pesticides used in maize and soybean cultivation. Pesticide separation, identification and quantification were performed using High-Performance Liquid Chromatography with Diode Array Detection (HPLC-DAD) and Liquid Chromatography-Electrospray Ionization Tandem Mass Spectrometry (LC-ESI-MS/MS). Solid Phase Extraction (SPE) with C18 sorbents was optimized for sample extraction from water. Soil samples were extracted by mechanical shaking, sonication or microwave-assisted extraction with industrial and home microwave ovens. Methods were validated resulting in limits of quantification (LOQ) for the pesticides in water in the range of 0.015-0.1 ng mL, using SPE-HPLC-DAD, and 0.01 ng mL using LC-ESI-MS/MS. LOQ of 1 ng mL for all pesticides in soil were achieved using the home microwave oven and LC-ESI-MS/MS. Recoveries for pesticides with all methods were in the range 70-120 %. Relative standard deviations for repeatability and intermediate precision ... Mostrar Tudo |
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Palavras-Chave: |
Method validation. |
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Thesagro: |
Agrotóxico; Água; Solo. |
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Thesaurus Nal: |
pesticides; soil; water. |
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Categoria do assunto: |
W Química e Física |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/144357/1/2009OT-10.pdf
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Marc: |
LEADER 03120nam a2200217 a 4500
001 1941040
005 2017-07-21
008 2009 bl uuuu m 00u1 u #d
100 1 $aMORAIS, L. S. R. de
245 $aDesenvolvimento e validação de métodos para a determinação de agrotóxicos em água e solo das áreas de recarga de Aquífero Guarani, na região das nascentes do Rio Araguaia, MT/GO.
260 $a2009.$c2009
300 $a132 p.$cil.
500 $aTese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica. Orientação: Isabel C. S. F. Jardim - Co-Orientadora: Sonia Cláudia do Nascimento de Queiroz - Embrapa Meio Ambiente.
520 $aAbstract: The area near the Araguaia River, between Goiás and Mato Grosso States, is the location of a portion of the recharging of the Guarani Aquifer, which is one of the world¿s largest aquifer systems and an important source of drinking water. This reservoir could be threatened by the widespread use of pesticides in maize and soybean cultivation in this area. Thus, this work developed analytical methods for the determination of imazethapyr, nicosulfuron, imazaquin, carbofuran, atrazine, linuron, clorimuronethyl and diflubenzuron, pesticides used in maize and soybean cultivation. Pesticide separation, identification and quantification were performed using High-Performance Liquid Chromatography with Diode Array Detection (HPLC-DAD) and Liquid Chromatography-Electrospray Ionization Tandem Mass Spectrometry (LC-ESI-MS/MS). Solid Phase Extraction (SPE) with C18 sorbents was optimized for sample extraction from water. Soil samples were extracted by mechanical shaking, sonication or microwave-assisted extraction with industrial and home microwave ovens. Methods were validated resulting in limits of quantification (LOQ) for the pesticides in water in the range of 0.015-0.1 ng mL, using SPE-HPLC-DAD, and 0.01 ng mL using LC-ESI-MS/MS. LOQ of 1 ng mL for all pesticides in soil were achieved using the home microwave oven and LC-ESI-MS/MS. Recoveries for pesticides with all methods were in the range 70-120 %. Relative standard deviations for repeatability and intermediate precision were less than 15 %. SPEHPLC- DAD and LC-ESI-MS/MS were employed for the analysis of samples of water from the recharge area and most of the pesticides were detected at concentrations below the minimum residue limit (MRL) of 0.1 ng mL established by the European Community. The home microwave oven and LC-ESI-MS/MS were used for the analysis of soil samples from two other regions of Brazil and the pesticides were not detected in these samples. Adsorption and desorption parameters were determined for imazethapyr, imazaquin, nicosulfuron and chlorimuron-ethyl, indicating that these pesticides have little affinity for the soil of the region of the Guarani Aquifer recharge, and show significant leaching potential, according to the ground water ubiquity score (GUS index) for these pesticides.
650 $apesticides
650 $asoil
650 $awater
650 $aAgrotóxico
650 $aÁgua
650 $aSolo
653 $aMethod validation
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Amazônia Ocidental. |
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Data corrente: |
07/11/2018 |
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Data da última atualização: |
16/11/2018 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SILVA, A. M. S. da; MAJOLO, C.; CHAGAS, E. C.; MONTEIRO, P. C.; BRANDÃO, F. R.; FARIAS, C. F. S. |
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Afiliação: |
Ana Maria Souza da Silva, Bolsista de Iniciação Científica, Pibic/CNPq/CPAA; CLAUDIA MAJOLO, CPAA; EDSANDRA CAMPOS CHAGAS, CPAA; Patrícia Castro Monteiro, Bolsista de pós-graduação Ufam/Fapeam/CPAA; Franmir Rodrigues Brandão, Bolsista de pós-graduação Ufam/Fapeam/CPAA; Caio Francisco Santana Farias, Bolsista de Iniciação Científica, Pibic/CNPq/CPAA. |
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Título: |
Atividade antiparasitária de quimioterápicos sobre acantocéfalos. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
In: JORNADA DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA OCIDENTAL, 14., 2017, Manaus. Anais... Brasília, DF: Embrapa, 2018. |
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Páginas: |
p. 173-183. |
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Idioma: |
Português |
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Conteúdo: |
O objetivo do presente trabalho foi determinar a atividade antiparasitária de quimioterápicos sobre acantocéfalos, a dose e o tempo de exposição que causasse a morte de 100% desses parasitos. |
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Palavras-Chave: |
Neoechinorhynchus buttnerae. |
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Thesagro: |
Tambaqui. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/185558/1/XIV-Jornada-IC-173.pdf
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Marc: |
LEADER 00873nam a2200205 a 4500
001 2098924
005 2018-11-16
008 2018 bl uuuu u00u1 u #d
100 1 $aSILVA, A. M. S. da
245 $aAtividade antiparasitária de quimioterápicos sobre acantocéfalos.$h[electronic resource]
260 $aIn: JORNADA DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA OCIDENTAL, 14., 2017, Manaus. Anais... Brasília, DF: Embrapa$c2018
300 $ap. 173-183.
520 $aO objetivo do presente trabalho foi determinar a atividade antiparasitária de quimioterápicos sobre acantocéfalos, a dose e o tempo de exposição que causasse a morte de 100% desses parasitos.
650 $aTambaqui
653 $aNeoechinorhynchus buttnerae
700 1 $aMAJOLO, C.
700 1 $aCHAGAS, E. C.
700 1 $aMONTEIRO, P. C.
700 1 $aBRANDÃO, F. R.
700 1 $aFARIAS, C. F. S.
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Embrapa Amazônia Ocidental (CPAA) |
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