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Pekiyi HS, Pelit L, Pelit FO, Buszewski B. Electrothermaly conditioned carbon fibre for the analysis of volatile pollutants. J Chromatogr A 2023; 1698:463999. [PMID: 37087857 DOI: 10.1016/j.chroma.2023.463999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 04/13/2023] [Accepted: 04/16/2023] [Indexed: 04/25/2023]
Abstract
This study deals with the development of an inexpensive and single-step sorbent manufacturing methodology for the analysis of air pollutants. Disposable carbon fibre sorbents were prepared in a few minutes using the electrothermal conditioning technique. The sorbent conditioning current and time were optimised to obtain the best extraction of benzene, toluene, ethylbenzene and xylenes (BTEX) from the air samples. After sorbent characterisation, analysis parameters affecting the BTEX extraction efficiency, such as sampling volume, humidity and sampling flow rate, were optimised for active BTEX sampling. Under optimum conditions, validation parameters such as the limit of detection (LOD), repeatability, reproducibility, and linear range were found to be 0.07-0.11 mg m - 3, 1.1%-1.8%, 5.6%-9.5% and 0.24-45 mg m - 3, respectively. Thereafter, the BTEX analysis was successfully conducted using the proposed method, with acceptable recovery values (96%-103%) in the real indoor environments.
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Affiliation(s)
- Halil Selman Pekiyi
- Ege University Faculty of Science Department of Chemistry, Bornova, İzmir, Turkey
| | - Levent Pelit
- Ege University Faculty of Science Department of Chemistry, Bornova, İzmir, Turkey.
| | - Füsun Okçu Pelit
- Ege University Faculty of Science Department of Chemistry, Bornova, İzmir, Turkey
| | - Boguslaw Buszewski
- Department of Environmental Chemistry and Bioanalytics, Nicolaus Copernicus University, Toruń, Poland
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2
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Cerdà V, Ferreira SLC, Phansi P. Lab-in-Syringe, a Useful Technique for the Analysis and Detection of Pollutants of Emerging Concern in Environmental and Food Samples. Molecules 2022; 27:7279. [PMID: 36364111 PMCID: PMC9656442 DOI: 10.3390/molecules27217279] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 10/15/2022] [Accepted: 10/17/2022] [Indexed: 12/04/2023] Open
Abstract
Lab-in-syringe is a new approach for the integration of various analytical extraction steps inside a syringe. Fully automated dispersive liquid-liquid microextraction is carried out in-syringe using a very simple instrumental setup. Dispersion is achieved by aspiration of the organic phase and then the watery phase into the syringe as rapidly as possible. After aggregation of the solvent droplets, the organic phase is pushed towards the detector allowing a highly sensitive spectrophotometric or fluorimetric detection. This technique is very useful not only for the preconcentration of analyte, but also for the elimination of their interferences. In this work, its application is described using solvents that are lighter and denser than water. The magnetically assisted variant and its coupling to different instruments has been also described with the aim of increasing the resolution of complex samples, especially useful for the determination of emerging contaminants.
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Affiliation(s)
| | - Sergio L. C. Ferreira
- Instituto de Química, Universidade Federal da Bahia, Bahia, Salvador 40170-270, Brazil
| | - Piyawan Phansi
- Department of Chemistry, Thepsatri Rajabhat University, Lopburi 15000, Thailand
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3
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Zhang X, Li T, Wei J, Tian GH, Cao QL, Wang YJ, Hou WL, Zhou WF, Zhang ZW, Hu H, Zhang YZ, Zhang DS, Li Q, Geng L. Interpenetrated metal-organic frameworks with enhanced photoluminescence for selective recognition of m-xylene from xylene isomers. Dalton Trans 2022; 51:4790-4797. [PMID: 35253813 DOI: 10.1039/d1dt03968g] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Two novel luminescent metal-organic frameworks (MOFs), [Zn3(TCA)2(BPB)2]n (DZU-101, where H3TCA = 4,4',4''-tricarboxyltriphenylamine and BPB = 1,4-bis(pyrid-4-yl)benzene) and [Zn3(TCA)2(BPB)DMA]n (DZU-102), based on the same ligands and metal ions were synthesized by regulating the amount of water in the solvothermal reaction system. Structural analyses show that the two MOFs have pillar-layered frameworks with Zn3 clusters connected by the TCA3- and BPB ligands. Interestingly, DZU-102 possessed a two-fold interpenetrated framework distinct from the individual network of DZU-101. As a result, DZU-102 showed a visual fluorescence color change from chartreuse to azure in m-xylene, while the fluorescence color was turquoise in p-/o-xylene with no change. Furthermore, compared with p/o-xylene, the fluorescence emission peak of DZU-102 in m-xylene suspension produced an obvious blue shift. Moreover, selective fluorescence sensing experiments were also carried out, which demonstrated that the degree of peak shift was related to the concentration of m-xylene, indicating the potential application of DZU-102 in fluorescence sensing of m-xylene from xylene isomers and further revealed the application of structural interpenetration for luminescence tuning of MOFs.
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Affiliation(s)
- Xiuling Zhang
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, P. R. China. .,School of Environmental & Chemical Engineering, Xi'an Polytechnic University, Xi'an 710048, P. R. China.,School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China
| | - Tingting Li
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, P. R. China. .,School of Environmental & Chemical Engineering, Xi'an Polytechnic University, Xi'an 710048, P. R. China
| | - Jiao Wei
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, P. R. China.
| | - Gao-Hua Tian
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, P. R. China.
| | - Qing-Ling Cao
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, P. R. China.
| | - Yu-Jie Wang
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, P. R. China.
| | - Wen-Li Hou
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, P. R. China.
| | - Wen-Feng Zhou
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, P. R. China. .,School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China
| | - Zhen-Wei Zhang
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, P. R. China. .,School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China
| | - Hui Hu
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, P. R. China.
| | - Yong-Zheng Zhang
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, P. R. China.
| | - Da-Shuai Zhang
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, P. R. China. .,School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China
| | - Qing Li
- School of Environmental & Chemical Engineering, Xi'an Polytechnic University, Xi'an 710048, P. R. China
| | - Longlong Geng
- College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, P. R. China. .,School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, P. R. China
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Drastíková E, Konderlová K, Šebestová A, Baron D, Švecová P, Táborská P, Vítková K, Pospíšilová V, Forostyak S, Kořístek Z, Porubová L, Petr J. Determination of total protein content in biomedical products by the PDMS-assisted lab-in-a-syringe assay using 3D printed scaffolds removal. J Anal Sci Technol 2021. [DOI: 10.1186/s40543-021-00307-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
AbstractThe aim of our work was to develop a low-cost, portable device for the fast and easy determination of total protein content by using PDMS-based lab-in-a-syringe technology with removal of 3D-printed channels. We proposed two designs with a one-step PDMS curing and a two-step PDMS-curing fabrication procedure. The one-step PDMS microdevices were found to be the best in the view of preparation, repeatability, and stability of the reagent. This design was then applied for the determination of total protein content in biomedical products using the Bradford assay.
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Xie W, Gong Y, Huang S, Yu K. Phase‐Transfer Strategy toward High‐Throughput Chromatographic Detection of Pentosan Content in Wheat‐Derived Products. ChemistrySelect 2021. [DOI: 10.1002/slct.202003237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Wei‐Qi Xie
- State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou China
| | - Yi‐Xian Gong
- State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou China
| | - Shi‐Wen Huang
- School of Materials Science and Engineering South China University of Technology Guangzhou China
| | - Kong‐Xian Yu
- Health Supervision Bureau of Liaoning Province Shenyang China
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Horstkotte B, Solich P. The Automation Technique Lab-In-Syringe: A Practical Guide. Molecules 2020; 25:E1612. [PMID: 32244706 PMCID: PMC7181287 DOI: 10.3390/molecules25071612] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 03/28/2020] [Accepted: 03/28/2020] [Indexed: 12/28/2022] Open
Abstract
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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Affiliation(s)
- Burkhard Horstkotte
- Department of Analytical Chemistry, Charles University, Faculty of Pharmacy, Akademika Heyrovského 1203, 500 05 Hradec Králové, Czech Republic;
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Yang HC, Urban PL. On-line coupling of fizzy extraction with gas chromatography. Anal Bioanal Chem 2019; 411:2511-2520. [PMID: 30911801 DOI: 10.1007/s00216-019-01755-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 02/22/2019] [Accepted: 03/04/2019] [Indexed: 02/07/2023]
Abstract
Fizzy extraction (FE) is carried out by first dissolving a carrier gas (typically, carbon dioxide) in a liquid sample at a moderate pressure (typically, 150 kPa) and then rapidly depressurizing the sample. The depressurization leads to instant release of numerous microbubbles in the liquid matrix. The abruptly released gas extracts the volatile solutes and elutes them toward a detector in a short period of time. Here, we describe on-line coupling of FE with gas chromatography (GC). The two platforms are highly compatible and could be combined following several modifications of the interface and adjustments of the extraction sequence. The analytes are released within a short period of time (1.5 s). Thus, the chromatographic peaks are satisfactorily narrow. There is no need to trap the extracted analytes in a loop or on a sorbent, as it is done in standard headspace and microextraction methods. The approach requires only minor sample pretreatment. The main parameters of the FE-GC-mass spectrometry (MS) method were optimized. The results of FE were compared with those of headspace flushing (scavenging headspace vapors), and the enhancement factors were in the order of ~ 2 to 13 (for various analytes). The limits of detection for some of the tested analytes were lower in the proposed FE-GC-MS method than in FE combined with atmospheric pressure chemical ionization MS. The method was further tested in analyses of selected real samples (apple flavor milk, mixed fruit and vegetable juice drink, mango flavored drink, pineapple green tea, toothpaste, and yogurt). Graphical abstract.
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Affiliation(s)
- Hao-Chun Yang
- Department of Chemistry, National Tsing Hua University, 101 Section 2, Kuang-Fu Road, Hsinchu, 30013, Taiwan.,Department of Applied Chemistry, National Chiao Tung University, 1001 University Road, Hsinchu, 300, Taiwan
| | - Pawel L Urban
- Department of Chemistry, National Tsing Hua University, 101 Section 2, Kuang-Fu Road, Hsinchu, 30013, Taiwan. .,Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, 101 Section 2, Kuang-Fu Road, Hsinchu, 30013, Taiwan.
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