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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
04/10/2010 |
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Data da última atualização: |
30/06/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
AMAIS, R. S.; GARCIA, E. E.; MONTEIRO, M. R.; NOGUEIRA, A. R. de A.; NÓBREGA, J. A. |
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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. |
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Título: |
Direct analysis of biodiesel microemulsions using an inductively coupled plasma mass spectrometry . |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Microchemical Journal, v.96, p. 146-150, 2010. |
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DOI: |
10.1016/j.microc.2010.02.017 |
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Idioma: |
Português |
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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 |
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Palavras-Chave: |
Auxiliary gas; ICP-MS; Microemulsions. |
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Thesaurus Nal: |
biodiesel; oxygen. |
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Categoria do assunto: |
W Química e Física |
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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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Embrapa Pecuária Sudeste (CPPSE) |
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| Registros recuperados : 168 | |
| 1. |  | GARCIA, E. E.; PEREIRA, C. D.; NOGUEIRA, A. R. de A.; NÓBREGA, J. A. Avaliação da correção de sinais de fundo causados pelos íons diatômicos Ar2 + e CN+ em ICP-MS com interface CRI. In: ENCONTRO NACIONAL DE QUÍMICA ANALÍTICA, 15.; CONGRESSO IBEROAMERICANO DE QUÍMICA ANALÍTICA, 3., 2009, Salvador, BA. Anais... Salvador: SBQ: UFBA, 2009.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 4. | | TREVISAN, L. C.; NOGUEIRA, A. R. de A.; NÓBREGA, J. A. Acid vapor partial digestion of biological samples in a focused microwave: multielement determination by ICP OES with axially-viewed configuration. In: RIO SYMPOSIUM ON ATOMIC SPECTROMETRY, 7., 2002, Florianópolis, SC. ICP Information Newsletter, v.28, n.1, june 2002. p.136. Tu34.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 12. | | SANTOS, D. M.; NOGUEIRA, A. R. de A.; NEVES, E. F. A.; NÓBREGA, J. A. Análise química e simulação do reagente CFA-C. In: ENCONTRO REGIONAL DE QUÍMICA DA SOCIEDADE BRASILEIRA DE QUÍMICA, 13.; SEMANA DA QUÍMICA, 31., 2001, Jaboticabal, SP. Anais... Jaboticabal: Instituto de Química-UNESP, 2001. p.70. QA-8.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| Registros recuperados : 168 | |
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