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Registro Completo |
Biblioteca(s): |
Embrapa Hortaliças. |
Data corrente: |
20/05/2003 |
Data da última atualização: |
20/05/2003 |
Autoria: |
BASSETO, E.; TERAMOTO, A.; GUTIERREZ, A. de S. D.; NOVO, M. do C. de S.; AZZOLINI, M.; MINAMI, K. |
Título: |
Efeito da aplicação de cera de carnaúba e de hipoclorito de sódio na conservação da abobrinha italiana. |
Ano de publicação: |
2002 |
Fonte/Imprenta: |
Horticultura Brasileira, Brasília, DF, v. 20, n. 2, jul. 2002. Suplemento 2. |
Descrição Física: |
1 CD-ROM. |
Idioma: |
Português |
Notas: |
Trabalho apresentado no 42º Congresso Brasileiro de Olericultura, 2002. Publicado também como resumo em: Horticultura Brasileira, Brasília, DF, v. 20, n. 2, p. 269, jul. 2002. Suplemento 1. |
Palavras-Chave: |
Abobrinha; Cera de carnaúba; Hipoclorito de sódio. |
Thesagro: |
Armazenamento; Conservação; Cucúrbita Pepo; Pós-Colheita; Temperatura. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01035naa a2200289 a 4500 001 1773499 005 2003-05-20 008 2002 bl uuuu u00u1 u #d 100 1 $aBASSETO, E. 245 $aEfeito da aplicação de cera de carnaúba e de hipoclorito de sódio na conservação da abobrinha italiana. 260 $c2002 300 $c1 CD-ROM. 500 $aTrabalho apresentado no 42º Congresso Brasileiro de Olericultura, 2002. Publicado também como resumo em: Horticultura Brasileira, Brasília, DF, v. 20, n. 2, p. 269, jul. 2002. Suplemento 1. 650 $aArmazenamento 650 $aConservação 650 $aCucúrbita Pepo 650 $aPós-Colheita 650 $aTemperatura 653 $aAbobrinha 653 $aCera de carnaúba 653 $aHipoclorito de sódio 700 1 $aTERAMOTO, A. 700 1 $aGUTIERREZ, A. de S. D. 700 1 $aNOVO, M. do C. de S. 700 1 $aAZZOLINI, M. 700 1 $aMINAMI, K. 773 $tHorticultura Brasileira, Brasília, DF$gv. 20, n. 2, jul. 2002. Suplemento 2.
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Embrapa Hortaliças (CNPH) |
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Registro Completo
Biblioteca(s): |
Embrapa Pecuária Sudeste. |
Data corrente: |
04/10/2010 |
Data da última atualização: |
30/06/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
AMAIS, R. S.; GARCIA, E. E.; MONTEIRO, M. R.; NOGUEIRA, A. R. de A.; NÓBREGA, J. A. |
Afiliação: |
RENATA S. AMAIS, UFSCar/SÃO CARLOS, SP; EDIVALDO E. GARCIA, UNIVERSIDADE ESTADUAL DE MARINGÁ/MARINGÁ; MARCOS R. MONTEIRO, UFSCar/SÃO CARLOS, SP; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; JOAQUIM A. NÓBREGA, UFSCar/SÃO CARLOS, SP. |
Título: |
Direct analysis of biodiesel microemulsions using an inductively coupled plasma mass spectrometry . |
Ano de publicação: |
2010 |
Fonte/Imprenta: |
Microchemical Journal, v.96, p. 146-150, 2010. |
DOI: |
10.1016/j.microc.2010.02.017 |
Idioma: |
Português |
Conteúdo: |
An analytical procedure for direct introduction of biodiesel samples into an inductively coupled plasma mass spectrometer (ICP-MS) by using microemulsion for sample preparation was developed here. Cadmium, Co, Cu, Mn, Ni, Pb, Ti, and Zn were determined in biodiesel microemulsified samples prepared from different oleaginous sources (African palm, castor beans, palm, soybeans and an unknown oleaginous). Microemulsions were prepared using 0.25 mL Triton X-100, 0.25 mL 20% v v(-1) HNO3, 0.50 mL biodiesel sample and 4.0 mL n-propanol. Argon-oxygen mixture was added to the plasma as auxiliary gas for correcting matrix effects caused by the high carbon load due to biodiesel microemulsions. The oxygen gas flow rate was set in 37.5 mL min(-1). The accuracy of the developed procedure was evaluated by applying addition-recovery experiments for biodiesel samples from different sources. Recoveries varied from 76.5 to 116.2% for all analytes but Zn in castor beans biodiesel sample (65.0 to 76.2%). Recoveries lower than 86.6% were obtained for palm biodiesel sample, probably due to matrix effects. Detection limits calculated by using oxygen in the composition of the auxiliary gas added to the plasma were higher than those calculated without using it, probably due to the highest formation of oxides. Despite oxides formation, best analytical performance was reached by using oxygen as auxiliary gas and by proper correction of transport interferences. The developed procedure based on microemulsion formation was suitable for direct introduction of biodiesel samples in ICP-MS. MenosAn analytical procedure for direct introduction of biodiesel samples into an inductively coupled plasma mass spectrometer (ICP-MS) by using microemulsion for sample preparation was developed here. Cadmium, Co, Cu, Mn, Ni, Pb, Ti, and Zn were determined in biodiesel microemulsified samples prepared from different oleaginous sources (African palm, castor beans, palm, soybeans and an unknown oleaginous). Microemulsions were prepared using 0.25 mL Triton X-100, 0.25 mL 20% v v(-1) HNO3, 0.50 mL biodiesel sample and 4.0 mL n-propanol. Argon-oxygen mixture was added to the plasma as auxiliary gas for correcting matrix effects caused by the high carbon load due to biodiesel microemulsions. The oxygen gas flow rate was set in 37.5 mL min(-1). The accuracy of the developed procedure was evaluated by applying addition-recovery experiments for biodiesel samples from different sources. Recoveries varied from 76.5 to 116.2% for all analytes but Zn in castor beans biodiesel sample (65.0 to 76.2%). Recoveries lower than 86.6% were obtained for palm biodiesel sample, probably due to matrix effects. Detection limits calculated by using oxygen in the composition of the auxiliary gas added to the plasma were higher than those calculated without using it, probably due to the highest formation of oxides. Despite oxides formation, best analytical performance was reached by using oxygen as auxiliary gas and by proper correction of transport interferences. The developed procedure based on microemul... Mostrar Tudo |
Palavras-Chave: |
Auxiliary gas; ICP-MS; Microemulsions. |
Thesaurus NAL: |
biodiesel; oxygen. |
Categoria do assunto: |
W Química e Física |
Marc: |
LEADER 02288naa a2200241 a 4500 001 1863486 005 2023-06-30 008 2010 bl uuuu u00u1 u #d 024 7 $a10.1016/j.microc.2010.02.017$2DOI 100 1 $aAMAIS, R. S. 245 $aDirect analysis of biodiesel microemulsions using an inductively coupled plasma mass spectrometry .$h[electronic resource] 260 $c2010 520 $aAn analytical procedure for direct introduction of biodiesel samples into an inductively coupled plasma mass spectrometer (ICP-MS) by using microemulsion for sample preparation was developed here. Cadmium, Co, Cu, Mn, Ni, Pb, Ti, and Zn were determined in biodiesel microemulsified samples prepared from different oleaginous sources (African palm, castor beans, palm, soybeans and an unknown oleaginous). Microemulsions were prepared using 0.25 mL Triton X-100, 0.25 mL 20% v v(-1) HNO3, 0.50 mL biodiesel sample and 4.0 mL n-propanol. Argon-oxygen mixture was added to the plasma as auxiliary gas for correcting matrix effects caused by the high carbon load due to biodiesel microemulsions. The oxygen gas flow rate was set in 37.5 mL min(-1). The accuracy of the developed procedure was evaluated by applying addition-recovery experiments for biodiesel samples from different sources. Recoveries varied from 76.5 to 116.2% for all analytes but Zn in castor beans biodiesel sample (65.0 to 76.2%). Recoveries lower than 86.6% were obtained for palm biodiesel sample, probably due to matrix effects. Detection limits calculated by using oxygen in the composition of the auxiliary gas added to the plasma were higher than those calculated without using it, probably due to the highest formation of oxides. Despite oxides formation, best analytical performance was reached by using oxygen as auxiliary gas and by proper correction of transport interferences. The developed procedure based on microemulsion formation was suitable for direct introduction of biodiesel samples in ICP-MS. 650 $abiodiesel 650 $aoxygen 653 $aAuxiliary gas 653 $aICP-MS 653 $aMicroemulsions 700 1 $aGARCIA, E. E. 700 1 $aMONTEIRO, M. R. 700 1 $aNOGUEIRA, A. R. de A. 700 1 $aNÓBREGA, J. A. 773 $tMicrochemical Journal$gv.96, p. 146-150, 2010.
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