Application of multivariate techniques for optimization of direct method for determination of lead in naphtha and petroleum condensate by electrothermal atomic absorption spectrometry
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2007 |
| Outros Autores: | , , , , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Repositório Institucional da UFBA |
| Texto Completo: | http://repositorio.ufba.br/ri/handle/ri/14494 |
Resumo: | Texto completo: acesso restrito. p. 321-326 |
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Dias, Fábio de SouzaSantos, Walter Nei Lopes dosCosta, Antonio Celso SpinolaWelz, BernhardVale, Maria Goreti R.Ferreira, Sergio Luis CostaDias, Fábio de SouzaSantos, Walter Nei Lopes dosCosta, Antonio Celso SpinolaWelz, BernhardVale, Maria Goreti R.Ferreira, Sergio Luis Costa2014-01-28T16:27:39Z20070026-3672http://repositorio.ufba.br/ri/handle/ri/14494v. 158, n. 3-4Texto completo: acesso restrito. p. 321-326A direct method is proposed for the determination of lead in naphtha and petroleum condensate by electrothermal atomic absorption spectrometry (ET AAS) using palladium as a permanent modifier. The procedure includes the dilution of 3 mL of sample (naphtha or petroleum condensate) to a final volume of 10 mL with xylene, and direct injection of 30 µL of this solution into the graphite furnace. The optimization of the instrumental conditions was performed using multivariate techniques. Firstly, a 23 full factorial design was performed for preliminary evaluation of the factors: pyrolysis time, pyrolysis temperature and atomization temperature. This experiment showed that in the studied levels only the factors pyrolysis time and atomization temperature were significant. Then, a 32 full factorial design was performed for the determination of the critical conditions of these variables. The method allows the determination of lead using the standard calibration technique with a calibration curve from 2.6 to 30 µg L−1 (correlation coefficient higher than 0.998). A limit of detection (3σ) of 0.8 µg L−1 and a characteristic mass of 35 pg were obtained in the presence of palladium as modifier. The precision expressed as relative standard deviation (RSD) was 1.5 and 0.8% for lead concentrations of 3.0 and 30 µg L−1 (n = 10). Recovery studies demonstrate that lead can be determined in naphtha and petroleum condensate using calibration with organic standard solutions. This method was applied for the determination of lead in three petroleum condensate and two naphtha samples. The concentrations found for the petroleum condensate was between 2.7 and 5.7 µg L−1, while the naphtha samples did not contain any detectable lead.Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2014-01-28T16:27:39Z No. of bitstreams: 1 art%3A10.1007%2Fs00604-006-0705-8.pdf: 121270 bytes, checksum: e623950f7f4b555319d0bc891c705dfb (MD5)Made available in DSpace on 2014-01-28T16:27:39Z (GMT). No. of bitstreams: 1 art%3A10.1007%2Fs00604-006-0705-8.pdf: 121270 bytes, checksum: e623950f7f4b555319d0bc891c705dfb (MD5) Previous issue date: 2007http://dx.doi.org/10.1007/s00604-006-0705-8reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBALeadNaphthaPetroleum condensateET AASApplication of multivariate techniques for optimization of direct method for determination of lead in naphtha and petroleum condensate by electrothermal atomic absorption spectrometryMicrochimica Actainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengORIGINALart%3A10.1007%2Fs00604-006-0705-8.pdfart%3A10.1007%2Fs00604-006-0705-8.pdfapplication/pdf121270https://repositorio.ufba.br/bitstream/ri/14494/1/art%253A10.1007%252Fs00604-006-0705-8.pdfe623950f7f4b555319d0bc891c705dfbMD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/14494/2/license.txtff6eaa8b858ea317fded99f125f5fcd0MD52TEXTart%3A10.1007%2Fs00604-006-0705-8.pdf.txtart%3A10.1007%2Fs00604-006-0705-8.pdf.txtExtracted texttext/plain23510https://repositorio.ufba.br/bitstream/ri/14494/3/art%253A10.1007%252Fs00604-006-0705-8.pdf.txt0a9b35efae6adfb0dff394f6e55006dbMD53ri/144942022-07-05 14:03:12.356oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:12Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false |
| dc.title.pt_BR.fl_str_mv |
Application of multivariate techniques for optimization of direct method for determination of lead in naphtha and petroleum condensate by electrothermal atomic absorption spectrometry |
| dc.title.alternative.pt_BR.fl_str_mv |
Microchimica Acta |
| title |
Application of multivariate techniques for optimization of direct method for determination of lead in naphtha and petroleum condensate by electrothermal atomic absorption spectrometry |
| spellingShingle |
Application of multivariate techniques for optimization of direct method for determination of lead in naphtha and petroleum condensate by electrothermal atomic absorption spectrometry Dias, Fábio de Souza Lead Naphtha Petroleum condensate ET AAS |
| title_short |
Application of multivariate techniques for optimization of direct method for determination of lead in naphtha and petroleum condensate by electrothermal atomic absorption spectrometry |
| title_full |
Application of multivariate techniques for optimization of direct method for determination of lead in naphtha and petroleum condensate by electrothermal atomic absorption spectrometry |
| title_fullStr |
Application of multivariate techniques for optimization of direct method for determination of lead in naphtha and petroleum condensate by electrothermal atomic absorption spectrometry |
| title_full_unstemmed |
Application of multivariate techniques for optimization of direct method for determination of lead in naphtha and petroleum condensate by electrothermal atomic absorption spectrometry |
| title_sort |
Application of multivariate techniques for optimization of direct method for determination of lead in naphtha and petroleum condensate by electrothermal atomic absorption spectrometry |
| author |
Dias, Fábio de Souza |
| author_facet |
Dias, Fábio de Souza Santos, Walter Nei Lopes dos Costa, Antonio Celso Spinola Welz, Bernhard Vale, Maria Goreti R. Ferreira, Sergio Luis Costa |
| author_role |
author |
| author2 |
Santos, Walter Nei Lopes dos Costa, Antonio Celso Spinola Welz, Bernhard Vale, Maria Goreti R. Ferreira, Sergio Luis Costa |
| author2_role |
author author author author author |
| dc.contributor.author.fl_str_mv |
Dias, Fábio de Souza Santos, Walter Nei Lopes dos Costa, Antonio Celso Spinola Welz, Bernhard Vale, Maria Goreti R. Ferreira, Sergio Luis Costa Dias, Fábio de Souza Santos, Walter Nei Lopes dos Costa, Antonio Celso Spinola Welz, Bernhard Vale, Maria Goreti R. Ferreira, Sergio Luis Costa |
| dc.subject.por.fl_str_mv |
Lead Naphtha Petroleum condensate ET AAS |
| topic |
Lead Naphtha Petroleum condensate ET AAS |
| description |
Texto completo: acesso restrito. p. 321-326 |
| publishDate |
2007 |
| dc.date.issued.fl_str_mv |
2007 |
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2014-01-28T16:27:39Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/article |
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0026-3672 |
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v. 158, n. 3-4 |
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0026-3672 v. 158, n. 3-4 |
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http://repositorio.ufba.br/ri/handle/ri/14494 |
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http://dx.doi.org/10.1007/s00604-006-0705-8 |
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