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Sasaki MK, Souza PA, Kamogawa MY, Reis BF, Rocha FR. A new strategy for membraneless gas-liquid separation in flow analysis: Determination of dissolved inorganic carbon in natural waters. Microchem J 2019. [DOI: 10.1016/j.microc.2018.12.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2
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Frenzel W, Markeviciute I. Membrane-based sample preparation for ion chromatography—Techniques, instrumental configurations and applications. J Chromatogr A 2017; 1479:1-19. [DOI: 10.1016/j.chroma.2016.11.052] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 11/23/2016] [Accepted: 11/25/2016] [Indexed: 10/20/2022]
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3
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Šrámková I, Horstkotte B, Sklenářová H, Solich P, Kolev SD. A novel approach to Lab-In-Syringe Head-Space Single-Drop Microextraction and on-drop sensing of ammonia. Anal Chim Acta 2016; 934:132-44. [PMID: 27506353 DOI: 10.1016/j.aca.2016.06.039] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 06/21/2016] [Accepted: 06/23/2016] [Indexed: 12/13/2022]
Abstract
A novel approach to the automation technique Lab-In-Syringe, also known as In-Syringe Analysis, is proposed which utilizes a secondary inlet into the syringe void, used as a size-adaptable reaction chamber, via a channel passing through the syringe piston. This innovative approach allows straightforward automation of head-space single-drop microextraction, involving accurately controlled drop formation and handling, and the possibility of on-drop analyte quantification. The syringe was used in upside-down orientation and in-syringe magnetic stirring was carried out, which allowed homogenous mixing of solutions, promotion of head-space analyte enrichment, and efficient syringe cleaning. The superior performance of the newly developed system was illustrated with the development of a sensitive method for total ammonia determination in surface waters. It is based on head-space extraction of ammonia into a single drop of bromothymol blue indicator created inside the syringe at the orifice of the syringe piston channel and on-drop sensing of the color change via fiber optics. The slope of the linear relationship between absorbance and time was used as the analytical signal. Drop formation and performance of on-drop monitoring was further studied with rhodamine B solution to give a better understanding of the system's performance. A repeatability of 6% RSD at 10 μmol L(-1) NH3, a linear range of up to 25 μmol L(-1) NH3, and a limit of detection of 1.8 μmol L(-1) NH3 were achieved. Study of interferences proved the high robustness of the method towards humic acids, high sample salinity, and the presence of detergents, thus demonstrating the method superiority compared to the state-of-the-art gas-diffusion methods. A mean analyte recovery of 101.8% was found in analyzing spiked environmental water samples.
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Affiliation(s)
- Ivana Šrámková
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, Hradec Králové, 500 05, Czech Republic; School of Chemistry, The University of Melbourne, Parkville, Victoria, 3100, Australia
| | - Burkhard Horstkotte
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, Hradec Králové, 500 05, Czech Republic; School of Chemistry, The University of Melbourne, Parkville, Victoria, 3100, Australia.
| | - Hana Sklenářová
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, Hradec Králové, 500 05, Czech Republic
| | - Petr Solich
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University in Prague, Heyrovského 1203, Hradec Králové, 500 05, Czech Republic
| | - Spas D Kolev
- School of Chemistry, The University of Melbourne, Parkville, Victoria, 3100, Australia
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Ymbern O, Sández N, Calvo-López A, Puyol M, Alonso-Chamarro J. Gas diffusion as a new fluidic unit operation for centrifugal microfluidic platforms. LAB ON A CHIP 2014; 14:1014-1022. [PMID: 24448693 DOI: 10.1039/c3lc51114f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A centrifugal microfluidic platform prototype with an integrated membrane for gas diffusion is presented for the first time. The centrifugal platform allows multiple and parallel analysis on a single disk and integrates at least ten independent microfluidic subunits, which allow both calibration and sample determination. It is constructed with a polymeric substrate material and it is designed to perform colorimetric determinations by the use of a simple miniaturized optical detection system. The determination of three different analytes, sulfur dioxide, nitrite and carbon dioxide, is carried out as a proof of concept of a versatile microfluidic system for the determination of analytes which involve a gas diffusion separation step during the analytical procedure.
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Affiliation(s)
- Oriol Ymbern
- Sensors & Biosensors Group (GSB), Department of Chemistry, Universitat Autònoma de Barcelona, Edifici Cn, Bellaterra, Catalonia, 08193, Spain.
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Ramdzan AN, Mornane PJ, McCullough MJ, Mazurek W, Kolev SD. Determination of acetaldehyde in saliva by gas-diffusion flow injection analysis. Anal Chim Acta 2013; 786:70-7. [PMID: 23790294 DOI: 10.1016/j.aca.2013.05.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2012] [Revised: 04/25/2013] [Accepted: 05/05/2013] [Indexed: 11/19/2022]
Abstract
The consumption of ethanol is known to increase the likelihood of oral cancer. In addition, there has been a growing concern about possible association between long term use of ethanol-containing mouthwashes and oral cancer. Acetaldehyde, known to be a carcinogen, is the first metabolite of ethanol and it can be produced in the oral cavity after consumption or exposure to ethanol. This paper reports on the development of a gas-diffusion flow injection method for the online determination of salivary acetaldehyde by its colour reaction with 3-methyl-2-benzothiazolinone hydrazone (MBTH) and ferric chloride. Acetaldehyde samples and standards (80 μL) were injected into the donor stream containing NaCl from which acetaldehyde diffused through the hydrophobic Teflon membrane of the gas-diffusion cell into the acceptor stream containing the two reagents mentioned above. The resultant intense green coloured dye was monitored spectrophotometrically at 600 nm. Under the optimum working conditions the method is characterized by a sampling rate of 9h(-1), a linear calibration range of 0.5-15 mg L(-1) (absorbance=5.40×10(-2) [acetaldehyde, mg L(-1)], R(2)=0.998), a relative standard deviation (RSD) of 1.90% (n=10, acetaldehyde concentration of 2.5 mg L(-1)), and a limit of detection (LOD) of 12.3 μg L(-1). The LOD and sampling rate of the proposed method are superior to those of the conventional gas chromatographic (GC) method (LOD=93.0 μg L(-1) and sampling rate=4 h(-1)). The reliability of the proposed method was illustrated by the fact that spiked with acetaldehyde saliva samples yielded excellent recoveries (96.6-101.9%), comparable to those obtained by GC (96.4-102.3%) and there was no statistically significant difference at the 95% confidence level between the two methods when non-spiked saliva samples were analysed.
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Affiliation(s)
- Adlin N Ramdzan
- School of Chemistry, The University of Melbourne, Parkville, VIC 3010, Australia
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Fredj A, Okbi H, Adhoum N, Monser L. Gas diffusion flow injection determination of thiomersal in vaccines. Talanta 2012; 91:47-51. [DOI: 10.1016/j.talanta.2012.01.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2011] [Revised: 01/03/2012] [Accepted: 01/04/2012] [Indexed: 10/14/2022]
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7
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Miró M, Hansen EH. Solid reactors in sequential injection analysis: recent trends in the environmental field. Trends Analyt Chem 2006. [DOI: 10.1016/j.trac.2005.09.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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8
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Vicente S, Zagatto EAG, Pinto PCAG, Saraiva MLMES, Lima JLFC, Borges EP. Exploiting gas diffusion for non-invasive sampling in flow analysis: determination of ethanol in alcoholic beverages. AN ACAD BRAS CIENC 2006; 78:23-9. [PMID: 16532204 DOI: 10.1590/s0001-37652006000100004] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A tubular gas diffusion PTFE membrane is exploited for non-invasive sampling in flow analysis, aiming to develop an improved spectrophotometric determination of ethanol in alcoholic beverages. The probe is immersed into the sample, allowing ethanol to diffuse through the membrane. It is collected into the acceptor stream (acidic dichromate solution), leading to formation of Cr(III), monitored at 600 nm. The analytical curve is linear up to 50% (v/v) ethanol, baseline drift is < 0.005 absorbance during four working-hours, and sample throughput is 30 h-1, meaning 0.6 mmol K2Cr2O7 per determination. Results are precise (r.s.d.< 2%) and in agreement with an official procedure.
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Affiliation(s)
- Simone Vicente
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, 13416-000 Piracicaba, SP, Brazil
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FERRER L, DEARMAS G, MIRO M, ESTELA J, CERDA V. Interfacing in-line gas-diffusion separation with optrode sorptive preconcentration exploiting multisyringe flow injection analysis. Talanta 2005; 68:343-50. [DOI: 10.1016/j.talanta.2005.08.068] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2005] [Revised: 08/28/2005] [Accepted: 08/28/2005] [Indexed: 10/25/2022]
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Hoherčáková Z, Opekar F. A contactless conductivity detection cell for flow injection analysis: Determination of total inorganic carbon. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2005.07.029] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Baeza M, Alonso J, Bartrolí J. Residual aqueous ozone determination by gas diffusion reverse flow injection analysis. Anal Bioanal Chem 2005; 382:388-95. [PMID: 15834557 DOI: 10.1007/s00216-005-3090-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2004] [Revised: 12/26/2004] [Accepted: 01/18/2005] [Indexed: 10/25/2022]
Abstract
A novel system based on reverse flow injection analysis with a gaseous diffusion step (GD-r-FIA) has been developed for the analysis of ozone. It includes an automatic microburet injection system. The ozone diffuses through a microporous membrane of polyvinylidene difluoride (PVDF) from the donor stream to the acceptor stream containing nitrite ions. The nitrite concentration in the acceptor solution decreases due to the ozone reduction reaction. In this way, a simple indirect measurement of the ozone concentration can be performed using the Griess-Ilosvay reaction for the nitrite ion. This correlates with the decrease in absorbance of the azoic dye formed with the ozone concentration in the donor stream. The system has been optimised by investigating the effect of the nitrite concentration in the acceptor stream on the diffusion flow. The optimum nitrite concentration was set at 0.250 ppm with a flow rate of 1.5 ml/min. The efficiency of the ozone diffusion through the membrane was only 4.4%. This affects the average sensitivity, which is low (0.0092+/-0.0012 AU/ppm), although the detection limit is similar to that obtained with other reported methods (0.03 ppm). The main advantage of the system reported here is that it has a linear range that is an order of magnitude broader than those observed for other GD-FIA systems. This is especially useful for continuous monitoring systems, since the residual ozone concentration is normally between 0.05 and 5.0 ppm. Additionally, using the reverse flow injection analysis (FIA) technique minimises chemical consumption and residue generation. Finally, the stability of the ozone solution and the repeatability and reproducibility of the method have been studied.
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Affiliation(s)
- M Baeza
- Departament de Química, Grup de Sensors i Biosensors, Universitat Autònoma de Barcelona, 08193, Bellaterra, Spain.
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Miró M, Frenzel W. Automated membrane-based sampling and sample preparation exploiting flow-injection analysis. Trends Analyt Chem 2004. [DOI: 10.1016/j.trac.2004.07.006] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Singer Pressman MA, Aldstadt JH. A comparative study of diffusion samplers for the determination of hexavalent chromium by sequential injection spectrophotometry. Microchem J 2003. [DOI: 10.1016/s0026-265x(02)00156-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kamogawa M, Nogueira A, Miyazawa M, Artigas J, Alonso J. Determination of soil calcareous efficiency using flow system with pervaporative separation. Anal Chim Acta 2001. [DOI: 10.1016/s0003-2670(00)01338-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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A gas diffusion sequential injection system for the determination of sulphur dioxide in wines. Anal Chim Acta 2001. [DOI: 10.1016/s0003-2670(00)01197-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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19
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Saurina J, Hernández-Cassou S. Flow-injection and stopped-flow completely continuous flow spectrophotometric determinations of aniline and cyclohexylamine. Anal Chim Acta 1999. [DOI: 10.1016/s0003-2670(99)00428-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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20
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Determination of sulfur dioxide in wines by gas-diffusion flow injection analysis utilizing modified electrodes with electrostatically assembled films of tetraruthenated porphyrin. Anal Chim Acta 1999. [DOI: 10.1016/s0003-2670(99)00060-4] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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21
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Farrell JR, Iles PJ, Sands TJ. Simultaneous determination of fluoride and phenolics in water using flow-injection analysis. ACTA ACUST UNITED AC 1999. [DOI: 10.1002/(sici)1098-2728(1999)11:2<105::aid-lra6>3.0.co;2-s] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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Soni MH, Callahan JH, McElvany SW. Laser Desorption−Membrane Introduction Mass Spectrometry. Anal Chem 1998; 70:3103-13. [DOI: 10.1021/ac980436l] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Manish H. Soni
- Analytical Chemistry Section, Code 6113, U.S. Naval Research Laboratory, Washington, D.C. 20375
| | - John H. Callahan
- Analytical Chemistry Section, Code 6113, U.S. Naval Research Laboratory, Washington, D.C. 20375
| | - Stephen W. McElvany
- Analytical Chemistry Section, Code 6113, U.S. Naval Research Laboratory, Washington, D.C. 20375
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Aldstadt JH, Olson DC, Martin AF. Determination of volatile arsenicals in ambient air by flow injection. Anal Chim Acta 1997. [DOI: 10.1016/s0003-2670(96)00423-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Decnop-Weever L, Kraak J. Determination of sulphite in wines by gas-diffusion flow injection analysis utilizing spectrophotometric pH-detection. Anal Chim Acta 1997. [DOI: 10.1016/s0003-2670(96)00421-7] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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26
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Davies AE, Fogg AG. Flow injection sandwich technique applied to indirect visible spectrophotometric determinations. bromimetric and iodimetric determination of sulphite. Anal Chim Acta 1995. [DOI: 10.1016/0003-2670(95)00395-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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Wong PS, Cooks R. Trace level analysis of volatile and semi-volatile organic compounds in water using a membrane/jet separator interfaced to an ion trap mass spectrometer. Anal Chim Acta 1995. [DOI: 10.1016/0003-2670(95)00143-n] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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28
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Solich P, Polášek M, Karlíček R. Sequential flow-injection spectrofluorimetric determination of coumarins using a double-injection single-line system. Anal Chim Acta 1995. [DOI: 10.1016/0003-2670(94)00660-e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Simultaneous flow injection determination of ammoniacal nitrogen and chloride in industrial effluent water with a combined on-line gas diffusion/dialyser unit. ACTA ACUST UNITED AC 1995. [DOI: 10.1007/bf00323632] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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