Demonstrando os fundamentos, potencialidades e limitações da análise por injeção seqüencial Demonstrating the fundamentals, potentialities and limitations of sequential injection analysis
<abstract language="eng">The sensitivity and accuracy of sequential injection methods are dependent on efficient overlapping of reagent and sample zones as they are propelled toward the detector cell. The formation of the reduced phosphomolybdic acid is used to demonstrate that the o...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
2008-01-01
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| Series: | Química Nova |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000300040 |
| _version_ | 1818965251637379072 |
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| author | Jorge Cesar Masini |
| author_facet | Jorge Cesar Masini |
| author_sort | Jorge Cesar Masini |
| collection | DOAJ |
| description | <abstract language="eng">The sensitivity and accuracy of sequential injection methods are dependent on efficient overlapping of reagent and sample zones as they are propelled toward the detector cell. The formation of the reduced phosphomolybdic acid is used to demonstrate that the overlapping efficiency in a fixed reaction coil relies on a suitable choice of reagent to sample volume ratio. Additionally, under poor mixing conditions or highly concentrated samples, the reaction extension is strongly dependent on the reagent concentration. The zone-sampling concept is exploited to determine phosphate in cola-based soft drinks after in-line dilution in an auxiliary coil. |
| first_indexed | 2024-12-20T13:14:02Z |
| format | Article |
| id | doaj.art-b8b1fd7f4d124c3594264e43af3607c9 |
| institution | Directory Open Access Journal |
| issn | 0100-4042 1678-7064 |
| language | English |
| last_indexed | 2024-12-20T13:14:02Z |
| publishDate | 2008-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj.art-b8b1fd7f4d124c3594264e43af3607c92022-12-21T19:39:36ZengSociedade Brasileira de QuímicaQuímica Nova0100-40421678-70642008-01-0131370470810.1590/S0100-40422008000300040Demonstrando os fundamentos, potencialidades e limitações da análise por injeção seqüencial Demonstrating the fundamentals, potentialities and limitations of sequential injection analysisJorge Cesar Masini<abstract language="eng">The sensitivity and accuracy of sequential injection methods are dependent on efficient overlapping of reagent and sample zones as they are propelled toward the detector cell. The formation of the reduced phosphomolybdic acid is used to demonstrate that the overlapping efficiency in a fixed reaction coil relies on a suitable choice of reagent to sample volume ratio. Additionally, under poor mixing conditions or highly concentrated samples, the reaction extension is strongly dependent on the reagent concentration. The zone-sampling concept is exploited to determine phosphate in cola-based soft drinks after in-line dilution in an auxiliary coil.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000300040sequential injectionspectrophotometryphosphate |
| spellingShingle | Jorge Cesar Masini Demonstrando os fundamentos, potencialidades e limitações da análise por injeção seqüencial Demonstrating the fundamentals, potentialities and limitations of sequential injection analysis Química Nova sequential injection spectrophotometry phosphate |
| title | Demonstrando os fundamentos, potencialidades e limitações da análise por injeção seqüencial Demonstrating the fundamentals, potentialities and limitations of sequential injection analysis |
| title_full | Demonstrando os fundamentos, potencialidades e limitações da análise por injeção seqüencial Demonstrating the fundamentals, potentialities and limitations of sequential injection analysis |
| title_fullStr | Demonstrando os fundamentos, potencialidades e limitações da análise por injeção seqüencial Demonstrating the fundamentals, potentialities and limitations of sequential injection analysis |
| title_full_unstemmed | Demonstrando os fundamentos, potencialidades e limitações da análise por injeção seqüencial Demonstrating the fundamentals, potentialities and limitations of sequential injection analysis |
| title_short | Demonstrando os fundamentos, potencialidades e limitações da análise por injeção seqüencial Demonstrating the fundamentals, potentialities and limitations of sequential injection analysis |
| title_sort | demonstrando os fundamentos potencialidades e limitacoes da analise por injecao sequencial demonstrating the fundamentals potentialities and limitations of sequential injection analysis |
| topic | sequential injection spectrophotometry phosphate |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000300040 |
| work_keys_str_mv | AT jorgecesarmasini demonstrandoosfundamentospotencialidadeselimitacoesdaanaliseporinjecaosequencialdemonstratingthefundamentalspotentialitiesandlimitationsofsequentialinjectionanalysis |