|
Registro Completo |
|
Biblioteca(s): |
Embrapa Meio Norte / UEP-Parnaíba. |
|
Data corrente: |
12/01/1994 |
|
Data da última atualização: |
12/02/2009 |
|
Autoria: |
BOWMAN, M. C.; BEROZA, M.; HARDING, J. A. |
|
Título: |
Determination of phorate and five of its metabolites in corn. |
|
Ano de publicação: |
1969 |
|
Fonte/Imprenta: |
Journal of Agricultural and Food Chemistry, v. 17, n. 1, p. 138-142, 1969. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Residues of the insecticide phorate, {0,0-diethyl S-[(ethylthio)] phosphorodithioate}, and five of its metabolites were determined in corn treated with the insecticide in granular form. The plant was extracted in a Soxhlet apparatus for 8 hours with 10% methanol in chloroform, and the extract was separated into three fractions by liquid chromatography on silica gel. Aliquots of the concentrated fractions were injected into a gas chromatograph equipped with a flame photometric detector sensitive to phosphorus. No interference from the crop extracts was encountered. Recoveries of the compounds from fortified samples were 96% or more, except for the oxygen analog of phorate; its recovery was only 62%. Sensitivity was 0.004 p.p.m. or better. Residues in various parts of corn plants treated with 1 pound of phorate per acre were determined at seven intervals after application. The toxicities of the six compounds to the European corn borer, Ostrinia nubialis (Hübner), were determined. Partition and chromatographic data are also given. |
|
Palavras-Chave: |
Maize; Pest; Pesticide. |
|
Thesagro: |
Inseticida; Milho; Praga. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 01603naa a2200217 a 4500
001 1074083
005 2009-02-12
008 1969 bl --- 0-- u #d
100 1 $aBOWMAN, M. C.
245 $aDetermination of phorate and five of its metabolites in corn.
260 $c1969
520 $aResidues of the insecticide phorate, {0,0-diethyl S-[(ethylthio)] phosphorodithioate}, and five of its metabolites were determined in corn treated with the insecticide in granular form. The plant was extracted in a Soxhlet apparatus for 8 hours with 10% methanol in chloroform, and the extract was separated into three fractions by liquid chromatography on silica gel. Aliquots of the concentrated fractions were injected into a gas chromatograph equipped with a flame photometric detector sensitive to phosphorus. No interference from the crop extracts was encountered. Recoveries of the compounds from fortified samples were 96% or more, except for the oxygen analog of phorate; its recovery was only 62%. Sensitivity was 0.004 p.p.m. or better. Residues in various parts of corn plants treated with 1 pound of phorate per acre were determined at seven intervals after application. The toxicities of the six compounds to the European corn borer, Ostrinia nubialis (Hübner), were determined. Partition and chromatographic data are also given.
650 $aInseticida
650 $aMilho
650 $aPraga
653 $aMaize
653 $aPest
653 $aPesticide
700 1 $aBEROZA, M.
700 1 $aHARDING, J. A.
773 $tJournal of Agricultural and Food Chemistry$gv. 17, n. 1, p. 138-142, 1969.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Meio Norte / UEP-Parnaíba (CPAMN-UEPP) |
|
