Automated headspace single-drop microextraction via a lab-in-syringe platform for mercury electrothermal atomic absorption spectrometric determination after in situ vapor generation

Mitani, Constantina; Kotzamanidou, Alexadra; Anthemidis, Aristidis N.

doi:10.1039/c4ja00062e

Cited by 36 publications

(11 citation statements)

References 27 publications

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“…(4) The size adaptability allows changing of the pressure inside the syringe if the syringe's head valve is turned to a permanently closed position. This can promote analyte evaporation at reduced pressure [19,[22][23][24] or to solvate a gaseous compound at increased pressure [22]. (5) Placing a magnetic stirring bar inside the syringe allows using a far higher stirring rate than in an open chamber where the liquid content would be lost at vigorous stirring by splashing.…”

Section: Lab-in-syringe-characteristics Potentials and Limitationsmentioning

confidence: 99%

The Automation Technique Lab-In-Syringe: A Practical Guide

Horstkotte

Solich

2020

Molecules

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About eight years ago, a new automation approach and flow technique called “Lab-In-Syringe” was proposed. It was derived from previous flow techniques, all based on handling reagent and sample solutions in a flow manifold. To date Lab-In-Syringe has evidently gained the interest of researchers in many countries, with new modifications, operation modes, and technical improvements still popping up. It has proven to be a versatile tool for the automation of sample preparation, particularly, liquid-phase microextraction approaches. This article aims to assist newcomers to this technique in system planning and setup by overviewing the different options for configurations, limitations, and feasible operations. This includes syringe orientation, in-syringe stirring modes, in-syringe detection, additional inlets, and addable features. The authors give also a chronological overview of technical milestones and a critical explanation on the potentials and shortcomings of this technique, calculations of characteristics, and tips and tricks on method development. Moreover, a comprehensive overview of the different operation modes of Lab-In-Syringe automated sample pretreatment is given focusing on the technical aspects and challenges of the related operations. We further deal with possibilities on how to fabricate required or useful system components, in particular by 3D printing technology, with over 20 different elements exemplarily shown. Finally, a short discussion on shortcomings and required improvements is given.

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Section: Lab-in-syringe-characteristics Potentials and Limitationsmentioning

confidence: 99%

The Automation Technique Lab-In-Syringe: A Practical Guide

Horstkotte

Solich

2020

Molecules

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“…Hence, a separation/preconcentration step is usually required prior to measurements. Many novel methods developed recently for this purpose have been reported in the literature, such as solid‐phase microextraction , dispersive liquid–liquid microextraction , single drop microextraction , cloud point extraction, , coprecipitation microsample injection , and carrier element‐free co‐precipitation , etc.…”

Section: Introductionmentioning

confidence: 99%

A novel carrier element‐free co‐precipitation method for separation/preconcentration of lead and cadmium ions from environmental matrices

Bulut

Demirci

Özdeş

et al. 2016

Env Prog and Sustain Energy

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A new separation and pre‐concentration method was presented in this study for two trace heavy metal ions, lead (Pb2+) and cadmium (Cd2+) from aqueous solutions, based on a carrier element free co‐precipitation (CEFC) method using a triazole derivate, 3‐(4‐tert‐butylphenyl)−5‐phenyl‐4‐(2‐hydroxy‐5‐methoxybenzylamino)−4H‐1,2,4‐triazole as an organic co‐precipitating agent. The method was optimized with some analytical parameters which affect the quantitative recoveries of study metals. According to the results, optimum pH of solution, quantity of co‐precipitating agent, centrifugation and incubation time, and sample volume were determined as 6.0, 1.5 mg, 10 min, and 10 min, and 100 mL, respectively. In addition, no significant matrix interferences were observed over the recovery of the metal ions. For analytical figure of merit, RSD values of the method were found as 5.7 and 4.8 for Pb2+ and Cd2+, respectively. LOD values were also calculated as 2.0 µg L−1 for Pb2+ and 0.2 µg L−1 for Cd2+. The accuracy of method was checked with spiked/recovery tests and analysis of a standard reference material. The developed method was finally applied to the real liquid/solid samples under the optimum conditions. © 2016 American Institute of Chemical Engineers Environ Prog, 35: 1709–1715, 2016

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“…Thus, the automation of three-phase microseparation approaches, DLLME and related techniques has been considered in recent years. The automation of HS-SDME hyphenated to GFAAS via a programmable lab-in-syringe platform for determination of Hg in complex matrices has been recently reported[155]. The method involved cold vapor generation and trapping of the volatile by amalgamation in an aqueous microdrop consisting of finely dispersed Pd 0 .Regarding DLLME and related techniques, Anthemidis and co-workers reported the first on-line coupling of SIA, DLLME and GFAAS in 2010[135].…”

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confidence: 99%

“…Thus, elements such as Au, Ag, Pd, Sb, Bi, Te, Cu and Cd have been determined in this type of samples.The sample pretreatment is usually very simple for waters. In general, no sample pretreatment is needed prior to LPME, or it merely consists of a filtration prior to the extraction process [67,77,[154][155][156]. Filtration through a 0.45 µm micropore size membrane filter is usually performed to remove suspended particulate matter.…”

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confidence: 99%

Liquid-phase microextraction combined with graphite furnace atomic absorption spectrometry: A review

Calle

Pena‐Pereira

Lavilla

et al. 2016

Analytica Chimica Acta

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Automated headspace single-drop microextraction via a lab-in-syringe platform for mercury electrothermal atomic absorption spectrometric determination after in situ vapor generation

Abstract: Automated lab-in-syringe headspace single drop microextraction (LIS-HS-SDME) hyphenated to ETAAS for mercury determination.

Cited by 36 publications

References 27 publications

The Automation Technique Lab-In-Syringe: A Practical Guide

The Automation Technique Lab-In-Syringe: A Practical Guide

A novel carrier element‐free co‐precipitation method for separation/preconcentration of lead and cadmium ions from environmental matrices

Liquid-phase microextraction combined with graphite furnace atomic absorption spectrometry: A review

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