1
|
Sun Y, Zhao Y, Xie X, Li H, Feng W. Printed polymer platform empowering machine-assisted chemical synthesis in stacked droplets. Nat Commun 2024; 15:6759. [PMID: 39117641 PMCID: PMC11310347 DOI: 10.1038/s41467-024-50768-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 07/19/2024] [Indexed: 08/10/2024] Open
Abstract
Efficiently exploring organic molecules through multi-step processes demands a transition from conventional laboratory synthesis to automated systems. Existing platforms for machine-assistant synthetic workflows compatible with multiple liquid-phases require substantial engineering investments for setup, thereby hindering quick customization and throughput increasement. Here we present a droplet-based chip that facilitates the self-organization of various liquid phases into stacked layers for conducting chemical transformations. The chip's precision polymer printing capability, enabled by digital micromirror device (DMD)-maskless photolithography and dual post-chemical modifications, allows it to create customized, sub-10 µm featured patterns to confine diverse liquids, regardless of density, within each droplet. The robustness and open design of surface-templated liquid layers actualize machine-assistant droplet manipulation, synchronous reaction triggering, local oscillation, and real-time monitoring of individual layers into a reality. We propose that, with further integration of machine operation line and self-learning, this droplet-based platform holds the potential to become a valuable addition to the toolkit of chemistry process, operating autonomously and with high-throughput.
Collapse
Affiliation(s)
- Yingxue Sun
- College of Polymer Science and Engineering, Sichuan University, Chengdu, China
| | - Yuanyi Zhao
- College of Polymer Science and Engineering, Sichuan University, Chengdu, China
| | - Xinjian Xie
- College of Polymer Science and Engineering, Sichuan University, Chengdu, China
| | - Hongjiao Li
- College of Chemical Engineering, Sichuan University, Chengdu, China
| | - Wenqian Feng
- College of Polymer Science and Engineering, Sichuan University, Chengdu, China.
- Department State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, China.
| |
Collapse
|
2
|
Tursen J, Yang T, Bai L, Li D, Tan R. Determination of imidacloprid and acetamiprid in bottled juice by a new DLLME-HPLC. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:50867-50877. [PMID: 33973119 DOI: 10.1007/s11356-021-13540-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 03/16/2021] [Indexed: 06/12/2023]
Abstract
A new kind of surfactant-emulsified vortex-assisted dispersive liquid-liquid microextraction method (SE-VA-DLLME) using benzyldimethyldodecylammonium chloride (BDDAC) as emulsifier and disperser has been developed for the determination of imidacloprid and acetamiprid in bottled grenadine and black currant juice samples prior to high-performance liquid chromatography-diode array detection. For grenadine juice and black currant juice, LODs were 0.78 and 0.45 μg/L and 0.81 and 0.83 μg/L and LOQs were 2.8 and 1.7 μg/L and 3.2 and 2.8 μg/L for imidacloprid and acetamiprid, respectively. The linear ranges were wider than 10-3000 μg/L with a correlation coefficient higher than 0.9913, the extraction recoveries were in the range of 61.6-84.2%, the enrichment factors were in the range of 27.0-43.3, and the recoveries and relative standard deviations of the studied neonicotinoids were in the range of 91.94-99.63% and 2.8-6.7%, respectively. The proposed method is presented as a simple, cheap, precise, accurate, and sensitive alternative for the determination of imidacloprid and acetamiprid in bottled grenadine juice and black currant juice samples.
Collapse
Affiliation(s)
- Janar Tursen
- College of Chemical Engineering, Xinjiang Agriculture University, No. 311, Agriculture University East Street, Urumqi, 830052, China.
| | - Ting Yang
- Dataway Horizon Technology Company Limited, No. 24, Jiuxianqiao Middle Road, Chaoyang District, Beijing, 100015, China
| | - Lu Bai
- College of Chemical Engineering, Xinjiang Agriculture University, No. 311, Agriculture University East Street, Urumqi, 830052, China
| | - Deqiang Li
- College of Chemical Engineering, Xinjiang Agriculture University, No. 311, Agriculture University East Street, Urumqi, 830052, China
| | - Ruikang Tan
- College of Chemical Engineering, Xinjiang Agriculture University, No. 311, Agriculture University East Street, Urumqi, 830052, China
| |
Collapse
|
3
|
Kartsova LA, Makeeva DV, Bessonova EA. Current Status of Capillary Electrophoresis. JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1134/s1061934820120084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
4
|
Gao F, Chen X, Li X, Li J, Liu H, Chen L. Field-amplified sample injection combined with capillary electrophoresis for the simultaneous determination of five chlorophenols in water samples. Electrophoresis 2019; 40:1771-1778. [PMID: 31090073 DOI: 10.1002/elps.201800532] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 05/11/2019] [Accepted: 05/11/2019] [Indexed: 11/06/2022]
Abstract
A sensitive method of CZE-ultraviolet (UV) detection based on the on-line preconcentration strategy of field-amplified sample injection (FASI) was developed for the simultaneous determination of five kinds of chlorophenols (CPs) namely 4-chlorophenol (4-CP), 2-chlorophenol (2-CP), 2,4-dichlorophenol (2,4-DCP), 2,4,6-trichlorophenol (2,4,6-TCP), and 2,6-dichlorophenol (2,6-DCP) in water samples. Several parameters affecting CZE and FASI conditions were systematically investigated. Under the optimal conditions, sensitivity enhancement factors for 4-CP, 2-CP, 2,4-DCP, 2,4,6-TCP, and 2,6-DCP were 9, 27, 35, 43, and 43 folds, respectively, compared with the direct CZE, and the baseline separation was achieved within 5 min. Then, the developed FASI-CZE-UV method was applied to tap and lake water samples for the five CPs determination. The LODs (S/N = 3) were 0.0018-0.019 µg/mL and 0.0089-0.029 µg/mL in tap water and lake water, respectively. The values of LOQs in tap water (0.006-0.0074 µg/mL) were much lower than the maximum permissible concentrations of 2,4,6-TCP, 2,4-DCP, and 2-CP in drinking water stipulated by World Health Organization (WHO) namely 0.3, 0.04, and 0.01 µg/mL, respectively, and thereby the method was suitable to detect the CPs according to WHO guidelines. Furthermore, the method attained high recoveries in the range of 83.0-119.0% at three spiking levels of five CPs in the two types of water samples, with relative standard deviations of 0.37-8.58%. The developed method was proved to be a simple, sensitive, highly automated, and efficient alternative to CPs determination in real water samples.
Collapse
Affiliation(s)
- Fangfang Gao
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, P. R. China.,CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology, Chinese Academy of Sciences, Yantai Institute of Coastal Zone Research, Yantai, P. R. China
| | - Xiaoxia Chen
- Hebei Research Centre of Analysis and Testing, Hebei University of Science and Technology, Shijiazhuang, P. R. China
| | - Xiaobin Li
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, P. R. China
| | - Jinhua Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology, Chinese Academy of Sciences, Yantai Institute of Coastal Zone Research, Yantai, P. R. China
| | - Huitao Liu
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, P. R. China
| | - Lingxin Chen
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology, Chinese Academy of Sciences, Yantai Institute of Coastal Zone Research, Yantai, P. R. China
| |
Collapse
|
5
|
Determination of fifteen phenols in wastewater from petroleum refinery samples using a dispersive liquid—liquid microextraction and liquid chromatography with a photodiode array detector. Microchem J 2019. [DOI: 10.1016/j.microc.2019.01.075] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
6
|
Ma S, Gao F, Lu W, Zhou N, You H, Li J, Chen L. Dispersive liquid-liquid microextraction coupled with pressure-assisted electrokinetic injection for simultaneous enrichment of seven phenolic compounds in water samples followed by determination using capillary electrophoresis. J Sep Sci 2019; 42:2263-2271. [PMID: 30997953 DOI: 10.1002/jssc.201900106] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/15/2019] [Accepted: 04/15/2019] [Indexed: 11/09/2022]
Abstract
Offline dispersive liquid-liquid microextraction combined with online pressure-assisted electrokinetic injection was developed to simultaneously enrich seven phenolic compounds in water samples, followed by determination using capillary electrophoresis, namely phenol, 4-chlorophenol, pentachlorophenol, 2,4,6-trichlorophenol, 2,4-dichlorophenol, 2-chlorophenol, and 2,6-dichlorophenol. Several parameters affecting separation performance of capillary electrophoresis and the enrichment efficiency of pressure-assisted electrokinetic injection and dispersive liquid-liquid microextraction were systematically investigated. Under the optimal conditions, seven phenolic compounds were completely separated within 14 min and good enrichment factors were obtained of 61, 236, 3705, 3288, 920, 86, and 1807 for phenol, 4-chlorophenol, pentachlorophenol, 2,4,6-trichlorophenol, 2,4-dichlorophenol, 2-chlorophenol, and 2,6-dichlorophenol, respectively. Good linearity was attained in the range of 0.1-200 μg/L for 2,4-dichlorophenol, 0.5-200 μg/L for 4-chlorophenol, pentachlorophenol, 2,4,6-trichlorophenol, 2-chlorophenol, and 2,6-dichlorophenol, as well as 1-200 μg/L for phenol, with correlation coefficients (r) over 0.9905. The limits of detection and quantification ranging from 0.03-0.28 and 0.07-0.94 μg/L were attained. This two step enrichment method was potentially applicable for the rapid and simultaneous determination of phenolic compounds in water samples.
Collapse
Affiliation(s)
- Suya Ma
- School of Environment and Chemical Engineering, Dalian University, Dalian, P. R. China.,CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology, Chinese Academy of Sciences, Yantai Institute of Coastal Zone Research, Yantai, P. R. China
| | - Fangfang Gao
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology, Chinese Academy of Sciences, Yantai Institute of Coastal Zone Research, Yantai, P. R. China
| | - Wenhui Lu
- School of Light Industry and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, P. R. China
| | - Na Zhou
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology, Chinese Academy of Sciences, Yantai Institute of Coastal Zone Research, Yantai, P. R. China
| | - Huiyan You
- School of Environment and Chemical Engineering, Dalian University, Dalian, P. R. China
| | - Jinhua Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology, Chinese Academy of Sciences, Yantai Institute of Coastal Zone Research, Yantai, P. R. China
| | - Lingxin Chen
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering and Technology, Chinese Academy of Sciences, Yantai Institute of Coastal Zone Research, Yantai, P. R. China
| |
Collapse
|
7
|
Gao F, Lu W, Liu H, Li J, Chen L. Dispersive liquid-liquid microextraction of five chlorophenols in water samples followed by determination using capillary electrophoresis. Electrophoresis 2018; 39:2431-2438. [PMID: 30004131 DOI: 10.1002/elps.201800205] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 06/29/2018] [Accepted: 07/03/2018] [Indexed: 12/22/2022]
Abstract
Dispersive liquid-liquid microextraction (DLLME) coupled with CE was developed for simultaneous determination of five types of chlorophenols (CPs), namely 2-chlorophenol (2-CP), 4-chlorophenol (4-CP), 2,4-dichlorophenol (2,4-DCP), 2,6-dichlorophenol (2,6-DCP), and 2,4,6-trichlorophenol (2,4,6-TCP) in water samples. Several parameters affecting DLLME and CE conditions were systematically investigated. Under the optimized DLLME-CE conditions, the five CPs were separated completely within 7.5 min and good enrichment factors were obtained of 40, 193, 102, 15, and 107 for 4-CP, 2,4,6-TCP, 2,4-DCP, 2-CP, and 2,6-DCP, respectively. Good linearity was attained in the range of 1-200 μg/L for 2,4,6-TCP, 2,4-DCP, 2-300 μg/L for 4-CP and 2-CP, and 1-300 μg/L for 2,6-DCP, with correlation coefficients (r) over 0.99. The LOD (S/N = 3) and the LOQ (S/N = 10) were 0.31-0.75 μg/L and 1.01-2.43 μg/L, respectively. Recoveries ranging from 60.85 to 112.36% were obtained with tap, lake, and river water spiked at three concentration levels and the RSDs (for n = 3) were 1.31-11.38%. With the characteristics of simplicity, cost-saving, and environmental friendliness, the developed DLLME-CE method proved to be potentially applicable for the rapid, sensitive, and simultaneous determination of trace CPs in complicated water samples.
Collapse
Affiliation(s)
- Fangfang Gao
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, P. R. China.,CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, P. R. China
| | - Wenhui Lu
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, P. R. China
| | - Huitao Liu
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, P. R. China
| | - Jinhua Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, P. R. China
| | - Lingxin Chen
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, P. R. China.,CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, P. R. China
| |
Collapse
|
8
|
Hazrina HZ, Noorashikin MS, Beh SY, Loh SH, Zain NNM. Formulation of chelating agent with surfactant in cloud point extraction of methylphenol in water. ROYAL SOCIETY OPEN SCIENCE 2018; 5:180070. [PMID: 30109066 PMCID: PMC6083667 DOI: 10.1098/rsos.180070] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 05/25/2018] [Indexed: 05/24/2023]
Abstract
Cloud point extraction (CPE) is a separation and preconcentration of non-ionic surfactant from one liquid phase to another. In this study, Sylgard 309 and three different types of additives for CPE, namely CPE-Sylgard, CPE-Sylgard-BMIMBr and CPE-Sylgard-GLDA, are investigated to extract methylphenol from water samples. The methylphenols are well separated by reversed-phase high-performance liquid chromatography (HPLC) with isocratic elution of acetonitrile : water; 60 : 40 (v/v) and detection at 260 nm. The optimized parameters for the effect of salt, surfactant, temperature, time of extraction, pH, interference study and the performance of different additives on methylphenol extraction are investigated. CPE-Sylgard-GLDA is chosen because it gives us a high peak and good peak area compared with CPE-Sylgard and CPE-Sylgard-BMIMBr. The recovery extractions of CPE-Sylgard-GLDA are obtained in the range of 80-99% as the percentage of relative standard deviation (RSD) is less than 10. The LOD and LOQ are 0.05 ppm and 0.18 ppm, respectively. The method developed for CPE-Sylgard-GLDA coupled with HPLC is feasible for the determination of methylphenol because it is simple, effective, cheap, and produces a high percentage of recovery.
Collapse
Affiliation(s)
- H. Z. Hazrina
- School of Marine Science and Environment, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia
| | - M. S. Noorashikin
- Chemical Engineering Programme, Research Centre For Sustainable Process Technology (CESPRO), Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
| | - S. Y. Beh
- Chemical Engineering Programme, Research Centre For Sustainable Process Technology (CESPRO), Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia
| | - S. H. Loh
- School of Marine Science and Environment, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia
| | - N. N. M. Zain
- Integrative Medicine Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, Bertam, 13200 Kepala Batas, Pulau Pinang, Malaysia
| |
Collapse
|
9
|
Shi L, Wang J, Feng J, Zhao S, Wang Z, Tao H, Liu S. Determination of chlorophenols in water using dispersive liquid-liquid microextraction coupled with water-in-oil microemulsion electrokinetic chromatography in normal stacking mode. J Sep Sci 2017; 40:2662-2670. [DOI: 10.1002/jssc.201700175] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 04/11/2017] [Accepted: 04/15/2017] [Indexed: 11/09/2022]
Affiliation(s)
- Ludi Shi
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy; Northwest A and F University; Yangling Shaanxi China
| | - Jin Wang
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy; Northwest A and F University; Yangling Shaanxi China
| | - Jing Feng
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy; Northwest A and F University; Yangling Shaanxi China
| | - Sihan Zhao
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy; Northwest A and F University; Yangling Shaanxi China
| | - Zhengmeng Wang
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy; Northwest A and F University; Yangling Shaanxi China
| | - Hu Tao
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy; Northwest A and F University; Yangling Shaanxi China
| | - Shuhui Liu
- Shaanxi Key Laboratory of Natural Products and Chemical Biology, College of Chemistry and Pharmacy; Northwest A and F University; Yangling Shaanxi China
| |
Collapse
|
10
|
Yeh YH, Chen WC, Chang SY. Surfactant-assisted dispersive liquid-liquid microextraction combined with field-amplified sample stacking in capillary electrophoresis for the determination of mexiletine and lidocaine. J Sep Sci 2017; 40:2406-2415. [DOI: 10.1002/jssc.201700042] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 03/12/2017] [Accepted: 03/27/2017] [Indexed: 12/17/2022]
Affiliation(s)
- Yu-Hsuan Yeh
- Department of Chemistry; National Kaohsiung Normal University; Kaohsiung Taiwan
| | - Wen-Chi Chen
- Division of Gastroenterology and Hepatology; Department of Medicine; Kaohsiung Veterans General Hospital; Kaohsiung Taiwan
- Faculty of Medicine; School of Medicine; National Yang-Ming University; Taipei Taiwan
| | - Sarah Y. Chang
- Department of Chemistry; National Kaohsiung Normal University; Kaohsiung Taiwan
| |
Collapse
|
11
|
Multiple-helix cobalt(II)-based metal-organic nanotubes on stainless steel fibers for solid-phase microextraction of chlorophenol and nitrophenols from water samples. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2167-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
12
|
Amiri A, Zonoz FM, Targhoo A, Saadati-Moshtaghin HR. Enrichment of phenolic compounds from water samples by using magnetic Fe3O4 nanoparticles coated with a Keggin type heteropoly acid of type H6[BFe(OH2)W11O39] as a sorbent. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2103-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
13
|
Šlampová A, Malá Z, Gebauer P, Boček P. Recent progress of sample stacking in capillary electrophoresis (2014-2016). Electrophoresis 2016; 38:20-32. [PMID: 27456212 DOI: 10.1002/elps.201600292] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 07/20/2016] [Accepted: 07/20/2016] [Indexed: 12/27/2022]
Abstract
The term "sample stacking" comprises a relatively broad spectrum of techniques that already form an almost inherent part of the methodology of CZE. Their principles are different but the effect is the same: concentration of a diluted analyte into a narrow zone and considerable increase of the method sensitivity. This review brings a survey of papers on electrophoretic sample stacking published approximately since the second quarter of 2014 till the first quarter of 2016. It is organized according to the principles of the stacking methods and includes chapters aimed at the concentration adjustment principle (Kohlrausch stacking), techniques based on pH changes, micellar methods, and other stacking techniques. Not reviewed are papers on transient ITP that are covered by another review in this issue.
Collapse
Affiliation(s)
- Andrea Šlampová
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Brno, Czech Republic
| | - Zdena Malá
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Brno, Czech Republic
| | - Petr Gebauer
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Brno, Czech Republic
| | - Petr Boček
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Brno, Czech Republic
| |
Collapse
|
14
|
Study of the mechanism of acetonitrile stacking and its application for directly combining liquid-phase microextraction with micellar electrokinetic chromatography. J Chromatogr A 2016; 1461:161-70. [DOI: 10.1016/j.chroma.2016.06.065] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 06/17/2016] [Accepted: 06/20/2016] [Indexed: 11/24/2022]
|
15
|
Dolatto RG, Messerschmidt I, Fraga Pereira B, Martinazzo R, Abate G. Preconcentration of polar phenolic compounds from water samples and soil extract by liquid-phase microextraction and determination via liquid chromatography with ultraviolet detection. Talanta 2016; 148:292-300. [DOI: 10.1016/j.talanta.2015.11.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 10/30/2015] [Accepted: 11/01/2015] [Indexed: 01/20/2023]
|
16
|
Chen YL, Huang YC, Wang CC. Direct assay of uroporphyrin and coproporphyrin in human urine by reverse-mode field amplified sample injection-sweeping and micellar electrokinetic chromatography. Talanta 2015; 143:27-34. [DOI: 10.1016/j.talanta.2015.04.086] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 04/27/2015] [Accepted: 04/28/2015] [Indexed: 11/26/2022]
|
17
|
LI MJ, ZHANG HY, LIU XZ, CUI CY, SHI ZH. Progress of Extraction Solvent Dispersion Strategies for Dispersive Liquid-liquid Microextraction. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2015. [DOI: 10.1016/s1872-2040(15)60851-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
18
|
Springer VH, Lista AG. In-line coupled single drop liquid-liquid-liquid microextraction with capillary electrophoresis for determining fluoroquinolones in water samples. Electrophoresis 2015; 36:1572-9. [DOI: 10.1002/elps.201400602] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 03/02/2015] [Accepted: 03/03/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Valeria H. Springer
- Analytical Chemistry Section; INQUISUR (UNS-CONICET); Bahía Blanca Buenos Aires Argentina
| | - Adriana G. Lista
- Analytical Chemistry Section; INQUISUR (UNS-CONICET); Bahía Blanca Buenos Aires Argentina
| |
Collapse
|
19
|
Hou X, Tang S, Guo Y, Liu S, Li J, Wang L, Liu X. Novel dextran/graphene oxide composite material as a sorbent for solid-phase microextraction of polar aromatic compounds. RSC Adv 2015. [DOI: 10.1039/c4ra15853a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel dextran/graphene oxide-coated SPME fiber was prepared and used for extraction of phenols and halogenated aromatic compounds.
Collapse
Affiliation(s)
- Xiudan Hou
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- China
| | - Sheng Tang
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- China
| | - Yong Guo
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- China
| | - Shujuan Liu
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- China
| | - Jubai Li
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- China
| | - Licheng Wang
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- China
| | - Xia Liu
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- China
| |
Collapse
|
20
|
Hou X, Wang L, Tang X, Xiong C, Guo Y, Liu X. Application of a β-cyclodextrin/graphene oxide-modified fiber for solid-phase microextraction of six fragrance allergens in personal products. Analyst 2015; 140:6727-35. [DOI: 10.1039/c5an01030f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel β-cyclodextrin/graphene oxide-coated SPME fiber was prepared and used for extraction of fragrance allergens in personal products.
Collapse
Affiliation(s)
- Xiudan Hou
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- China
| | - Licheng Wang
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- China
| | - Xiaofen Tang
- Key Laboratory of Oil & Gas Production
- China National Petroleum Corporation
- Research Institute of Petroleum Exploration and Development
- Beijing 100083
- China
| | - Chunming Xiong
- Key Laboratory of Oil & Gas Production
- China National Petroleum Corporation
- Research Institute of Petroleum Exploration and Development
- Beijing 100083
- China
| | - Yong Guo
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- China
| | - Xia Liu
- Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou 730000
- China
| |
Collapse
|