Bead-injection Determination of Total Mercury in River Water Samples

Sartini, Raquel P.; Vidotti, Eliane C.; Oliveira, Celso Maran de

doi:10.2116/analsci.19.1653

Cited by 9 publications

(8 citation statements)

References 19 publications

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“…45,51 Um dos trabalhos 26 demonstrou a determinação simultânea de Cu 2+ , Pb 2+ , Cd 2+ e Zn 2+ em extratos de sedimentos de rios. Os ânions estudados foram fosfato e silicato, 27 sulfeto, 31 nitrato, 34,47 nitrito 34 e cloreto.…”

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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“…In some cases, when gaseous analytes were involved, the separation was obtained using a hydrophobic membrane [69,146]. In other cases, the separation involved an extraction, either liquid-liquid [41,54,73] or solid-liquid [31,33,81,93,118,152]. These solid-liquid extractions used resins and the analyte was retained, even after the colorimetric reaction [31].…”

Section: Multiparametric Determinationsmentioning

confidence: 99%

A review on sequential injection methods for water analysis

Mesquita

Rangel

2009

Analytica Chimica Acta

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The development of fast, automatic and less expensive methods of analysis has always been the main aim of flow methodologies. The search for new procedures that still maintain the reliability and accuracy of the reference procedures is an ever growing challenge. New requirements are continually added to analytical methodologies, such as lower consumption of samples and reagents, miniaturisation and portability of the equipment, computer interfaces for full decision systems and so on. Therefore, the development of flow methodologies meeting the extra requirements of water analysis is a challenging work. Sequential injection analysis (SIA) presents a set of characteristics that make it highly suitable for water analysis. With sequential injection analysis, most routine determinations in waters can be performed more quickly with much lower reagent consumption when compared to reference procedures. Additionally, SIA can be a valuable tool for analyte speciation and multiparametric analysis. This paper critically reviews the overall work in this area.

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“…This is quite feasible using sequential injection, lab-on-valve approach (SI-LOV) [16,17]. The association of SIA with SPS leads us to the concept of bead injection (BI), based on the introduction and trapping of the functionalized beads in the flow conduit [18]. Beads are used as a solid surface to extract the analyte or to accommodate a chemical reaction.…”

Section: Introductionmentioning

confidence: 99%

“…In this way the interference of the colour of the sample can be also reduced. The main difficulty of this approach is to obtain a solid phase that can be applied to the separation, concentration and determination of the chemical species of interest [18].…”

Section: Introductionmentioning

confidence: 99%

Exploiting the bead injection LOV approach to carry out spectrophotometric assays in wine: Application to the determination of iron

Vidigal¹,

Tóth²,

Rangel³

2011

Talanta

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A sequential injection lab-on-valve (SI-LOV) system was used to develop a new methodology for the determination of iron in wine samples exploiting the bead injection (BI) concept for solid phase extraction and spectrophotometric measurement. Nitrilotriacetic Acid (NTA) Superflow resin was used to build the bead column of the flow through sensor. The iron (III) ions were retained by the bead column and react with SCN(-) producing an intense red colour. The change in absorbance was monitored spectrophotometrically on the optosensor at 480 nm. It was possible to achieve a linear range of 0.09-5.0 mg L(-1) of iron, with low sample and reagent consumption; 500 μL of sample, 15 μmol of SCN(-), and 9 μmol of H(2)O(2), per assay. The proposed method was successfully applied to the determination of iron in wine, with no previous treatment other than dilution, and to other food samples.

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Bead-injection Determination of Total Mercury in River Water Samples

Abstract: . The results are precise, r.s.d. < 9%; spiked sample recoveries within 91.2 and 109% are found.

Cited by 9 publications

References 19 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

A review on sequential injection methods for water analysis

Exploiting the bead injection LOV approach to carry out spectrophotometric assays in wine: Application to the determination of iron

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