Peer Reviewed: From Flow Injection to Bead Injection.

Růžička, Jaromír; Scampavia, Louis

doi:10.1021/ac990293i

Cited by 133 publications

(100 citation statements)

References 16 publications

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“…9 As variações do SIA: injeção de esferas (BI), laboratório em uma válvula (LOV) e a cromatografia por injeção sequencial (SIC) O sistema de injeção de esferas (Bead Injection -BI) surgiu em 1999. Proposto por Ruzicka e Scampavia, 10 o conceito baseia-se no uso de suspensões de materiais funcionais, tais como resinas de troca iônica, que são direcionados a uma linha específica do SIA. Em sua forma mais simples, esta linha possui um dispositivo, normalmente uma tela com abertura inferior ao diâmetro médio das partículas em suspensão, cuja finalidade é permitir o empacotamento das partículas à medida que a solução atravessa a mesma.…”

Section: Características E Operaçãounclassified

A análise por injeção sequencial (SIA): vinte anos em uma perspectiva brasileira

Santos¹,

Masini²

2010

Quím. Nova

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Section: Características E Operaçãounclassified

A análise por injeção sequencial (SIA): vinte anos em uma perspectiva brasileira

Santos¹,

Masini²

2010

Quím. Nova

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“…The BI approach originally adapted to optical sensing in sequential injection (SI) analyzers was introduced as a powerful tool for the automation of immunoassays using diffuse reflectometric detection [4]. The miniaturised BI chemosensors use minute amounts of beads carrying the derivatization reagent or functional moieties, whereby the analyte becomes preconcentrated and can be monitored via optical fibers in custom-built flow-through cells that capture the active sensing surfaces while allowing the perfused liquid to flow freely [4].…”

Section: The Concept Of Bead Injectionmentioning

confidence: 99%

“…The miniaturised BI chemosensors use minute amounts of beads carrying the derivatization reagent or functional moieties, whereby the analyte becomes preconcentrated and can be monitored via optical fibers in custom-built flow-through cells that capture the active sensing surfaces while allowing the perfused liquid to flow freely [4]. After each analytical run, the sorbent particles are disposed by flow-reversal and the sensor surface is renewed by injecting a new plug of a fresh bead suspension.…”

Section: The Concept Of Bead Injectionmentioning

confidence: 99%

“…Notwithstanding the fact that both the optical paths and reaction times in BI-based schemes are shorter as compared with steady-state liquid-phase spectrophotometry, no deterioration in sensitivity is observed as a result of the immobilization of the analyte on a small surface area of the sensor wherein the reaction is driven by an excess of solid reagent [4].…”

Section: The Concept Of Bead Injectionmentioning

confidence: 99%

“…As opposed to earlier reviews dealing with BI [3][4][5][6], this article critically discusses the overall platforms described in the literature for BI-based SPE analysis and illustrates the alternative approaches for uptake and detection of target species . Pros and cons of BI assays as compared with conventional particle packed microcolumns for flowbased SPE are also described in detail via selection of representative examples in the environmental and bioanalytical fields as reported within the past decade.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Recent developments in automatic solid-phase extraction with renewable surfaces exploiting flow-based approaches

Miró

Hartwell

Jakmunee

et al. 2008

TrAC Trends in Analytical Chemistry

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. (2008). Recent developments in automatic solid-phase extraction with renewable surfaces exploiting flow-based approaches. TRAC -Trends in Analytical Chemistry, 27(9), 749-761. DOI: 10.1016749-761. DOI: 10. /j.trac.2008 TrAC MS:08-00052-REVISED Abstract: Solid-phase extraction (SPE) has been consolidated as the most versatile sample processing method for removal of interfering species and/or analyte enrichment. Although significant advances have been conducted over the past two decades for automation of the entire analytical protocol involving SPE via flow injection approaches, on-line SPE assays performed in a permanent mode lack sufficient reliability as a consequence of the progressive tighter packing of the bead reactor, contamination of the solid surfaces and potential leakage of functional moieties. This article overviews the current state-of-the-art of an appealing tool for overcoming the above shortcomings, the so-called bead injection (BI) analysis, based on automated renewal of the sorbent material per assay exploiting the various generations of flow injection analysis. It addresses novel instrumental developments for implementation of BI and a number of alternatives for on-line chemical derivatization reactions and pinpoints the most common instrumental detection techniques utilised. Relevant environmental and bioanalytical applications reported within the past few years are presented and discussed in detail.

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Virtual Plume

et al. 2000

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A bench‐top model of a chemical plume in a turbulent flow, a Virtual Plume, was built to simulate the behavior of a turbulent chemical plume. It is based on an eight‐channel FIA/SIA system and an array of eight amperometric sensors. A plug of sample solution was delivered to the sensors after passing through delay and dispersion elements. Adjusting these two elements enabled us to simulate the time‐concentration profile at any arbitrary point in the plume. It has been shown that an eight‐channel system can simulate an arbitrary sensor array positioned in a turbulent plume. Preliminary correlation of the shape of the peaks obtained in the VP with those recorded using planar laser‐induced fluorescence in a turbulent flow shows the value of this approach.

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Peer Reviewed: From Flow Injection to Bead Injection.

Cited by 133 publications

References 16 publications

A análise por injeção sequencial (SIA): vinte anos em uma perspectiva brasileira

A análise por injeção sequencial (SIA): vinte anos em uma perspectiva brasileira

Recent developments in automatic solid-phase extraction with renewable surfaces exploiting flow-based approaches

Virtual Plume

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