1997
DOI: 10.1039/a608539c
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Determination of Thallium in River Sediment by Flow Injection On-line Sorption Preconcentration in a Knotted Reactor Coupled With Electrothermal Atomic Absorption Spectrometry

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Cited by 39 publications
(23 citation statements)
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References 20 publications
(27 reference statements)
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“…The enrichment process is based on the adsorption of hydrophobic complexes of metal ions on the walls of knotted reactors, followed by an elution step using acidic solutions [6,9] and/or organic solvents such as methanol or ethanol, among others [10][11][12].…”
Section: Introductionmentioning
confidence: 99%
“…The enrichment process is based on the adsorption of hydrophobic complexes of metal ions on the walls of knotted reactors, followed by an elution step using acidic solutions [6,9] and/or organic solvents such as methanol or ethanol, among others [10][11][12].…”
Section: Introductionmentioning
confidence: 99%
“…Existing several analytical techniques applicable to thallium determinations in environmental and industrial samples include neutron activation 11 , atomic absorption spectrometry 12 , electrothermal atomic absorption spectrometry [13][14][15][16][17] , UV-Vis spectrophotometry 18,19 , mass spectrometry 20,21 and anodic stripping voltammetry [22][23][24][25][26] . Neutron activation analysis is the most sensitive method for the trace determination of thallium, but it needs very expensive facilities and a long time for irradiation of the samples.…”
Section: Introductionmentioning
confidence: 99%
“…Isso é verdadeiro e tem sido aplicado em diferentes sistemas propostos empregando diferentes diagramas FIA e agentes complexantes. Diversos autores têm citado o etanol com um dos mais apropriados eluentes para este tipo de sistemas de complexação, seja empregando sílica modificada com grupamentos funcionais octadecil (RP-Si-C 18 ) como adsorvente [36][37][38][39][40][41] , reatores feitos de PTFE [42][43][44][45] , amberlite XAD-16 46 , bem como em complexos retidos em mini-coluna preenchida com carvão ativo 47 . Outros sistemas que empregam etanol associado a outras substâncias como meio químico para o analito têm sido descritos 48 .…”
Section: Introductionunclassified