Sequential injection analysis

Determination of plutonium isotopes in waters and environmental solids: A review

“…The inherent features of SI in terms of versatility, self-adaptation, full computer control, minimum consumption of sample and reagents, minute waste generation and instrumental robustness make it very attractive for automation and simplification of various sample processing techniques, including liquid-liquid (micro)extraction and solid-phase extraction (SPE) [38][39][40][41][42][43][44]. In fact, a vast number of on-line FI/SI-SPE methods have been recently developed for the analysis of environmental samples.…”

“…Therefore, radionuclide pre-concentration and separation methods remain to be an important and often critical part of the overall radioanalytical protocol. analysis [33,[35][36][37], and its second generation so-called sequential injection (SI) analysis [39], represent attractive tools to automate various separation methods, such as solvent extraction and column separation prior to analyte (e.g., radionuclide) detection [41,42,44].…”

“…Sequential injection is based on using programmable, bidirectional discontinuous flow as precisely coordinated and controlled by a computer. The SI analyzers can be configured to perform most operations of conventional FI, with no or minimal physical reconfigurations of the manifold when aiming at multiparametric assays [35,39]. A sketch of a typical SI-manifold is reproduced in Fig.…”

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

“…Segundo Lenehan et al, 5 havia, porém, dois obstáculos para o emprego de FIA em monitoramento de processos: o primeiro estava relacionado com a necessidade de se reconfigurar todo o aparato para novas análises e, o segundo, com o custo relativamente alto de manutenção das bombas peristálticas. Particularmente discordamos do segundo fator, pois o custo operacional de uma bomba peristáltica é muito baixo, e essa premissa foi uma das principais para que a mesma se tornasse tão popular em sistemas FIA.…”

A multisyringe flow-through sequential extraction system for on-line monitoring of orthophosphate in soils and sediments

“…As a result of the precise fluidic control via syringe pumps, the second generation of FI, namely, sequential injection (SI) analysis [20], has opened for new avenues in miniaturisation of sample processing including fractionation of solid samples [21]. While most FI-procedures employ continuous, uni-directional pumping of solutions, SI is based on exploiting programmable, bi-directional discontinuous flow as coordinated and controlled by a computer.…”