1
|
Shi L, Chen M, Zhao G, Wang X, Fan M, Liu R, Xie F. Environmental Applications of Electromembrane Extraction: A Review. MEMBRANES 2023; 13:705. [PMID: 37623766 PMCID: PMC10456692 DOI: 10.3390/membranes13080705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/24/2023] [Accepted: 07/27/2023] [Indexed: 08/26/2023]
Abstract
Electromembrane extraction (EME) is a miniaturized extraction technique that has been widely used in recent years for the analysis and removal of pollutants in the environment. It is based on electrokinetic migration across a supported liquid membrane (SLM) under the influence of an external electrical field between two aqueous compartments. Based on the features of the SLM and the electrical field, EME offers quick extraction, effective sample clean-up, and good selectivity, and limits the amount of organic solvent used per sample to a few microliters. In this paper, the basic devices (membrane materials and types of organic solvents) and influencing factors of EME are first introduced, and the applications of EME in the analysis and removal of environmental inorganic ions and organic pollutants are systematically reviewed. An outlook on the future development of EME for environmental applications is also given.
Collapse
Affiliation(s)
- Linping Shi
- College of Chemistry, Zhengzhou University, Science Avenue #100, Zhengzhou 450001, China;
- Zhengzhou Tobacco Research Institute of CNTC, Fengyang Street #2, Zhengzhou 450001, China; (G.Z.); (X.W.); (M.F.); (R.L.)
| | - Mantang Chen
- Zhengzhou Tobacco Research Institute of CNTC, Fengyang Street #2, Zhengzhou 450001, China; (G.Z.); (X.W.); (M.F.); (R.L.)
| | - Ge Zhao
- Zhengzhou Tobacco Research Institute of CNTC, Fengyang Street #2, Zhengzhou 450001, China; (G.Z.); (X.W.); (M.F.); (R.L.)
| | - Xiaoyu Wang
- Zhengzhou Tobacco Research Institute of CNTC, Fengyang Street #2, Zhengzhou 450001, China; (G.Z.); (X.W.); (M.F.); (R.L.)
| | - Meijuan Fan
- Zhengzhou Tobacco Research Institute of CNTC, Fengyang Street #2, Zhengzhou 450001, China; (G.Z.); (X.W.); (M.F.); (R.L.)
| | - Ruihong Liu
- Zhengzhou Tobacco Research Institute of CNTC, Fengyang Street #2, Zhengzhou 450001, China; (G.Z.); (X.W.); (M.F.); (R.L.)
| | - Fuwei Xie
- Zhengzhou Tobacco Research Institute of CNTC, Fengyang Street #2, Zhengzhou 450001, China; (G.Z.); (X.W.); (M.F.); (R.L.)
| |
Collapse
|
2
|
Song J, Yu C, Ma F, Lin R, Gao L, Yan Y, Wu Y. Design of molecularly imprinted nanocomposite membrane for selective separation of lysozyme based on double-faced self-assembly strategy. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
3
|
Hu R, Yan Y, Jiang L, Huang C, Shen X. Determination of total cathinones with a single molecularly imprinted fluorescent sensor assisted by electromembrane microextraction. Mikrochim Acta 2022; 189:324. [PMID: 35939150 DOI: 10.1007/s00604-022-05405-3] [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: 03/28/2022] [Accepted: 07/04/2022] [Indexed: 11/29/2022]
Abstract
An electromembrane microextraction (EME)-assisted fluorescent molecularly imprinted polymer (MIP) sensing method is presented for detecting the total cathinone drugs in urine samples. In this detection system, the clean-up ability of EME eliminated the matrix effects on both target binding with MIPs and the luminescence of the fluorophore in the sensor. Moreover, by optimizing the extraction conditions of EME, different cathinone drugs with a same concentration show a same response on the single aggregation induced emission (AIE) based MIP (AIE-MIP) sensor (λex = 360 nm, λem = 467 nm). The recoveries were 57.9% for cathinone (CAT) and 78.2% for methcathinone (MCAT). The EME-assisted "light-up" AIE-MIP sensing method displayed excellent performance with a linear range of 2.0-12.0 μmol L-1 and a linear determination coefficient (R2) of 0.99. The limit of detection (LOD) value for EME-assisted "light-up" AIE-MIP sensing method was 0.3 μmol L-1. The relative standard deviation (RSD) values for the detection were found to be within the range 2.0-12.0%. To the best of our knowledge, this is the first time that determination of total illicit drugs with a single fluorescent MIP sensor was achieved and also the first utilization of sample preparation to tune the sensing signal of the sensor to be reported. We believe that this versatile combination of fluorescent MIP sensor and sample preparation can be used as a common protocol for sensing the total amount of a group of analytes in various fields.
Collapse
Affiliation(s)
- Rong Hu
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, 430030, China
| | - Yibo Yan
- Department of Forensic Medicine, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, 430030, China
| | - Long Jiang
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, 430030, China
| | - Chuixiu Huang
- Department of Forensic Medicine, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, 430030, China.
| | - Xiantao Shen
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, 430030, China.
| |
Collapse
|
4
|
Successive liquid-phase microextraction of acidic and basic analytes. Anal Chim Acta 2022; 1192:339335. [PMID: 35057942 DOI: 10.1016/j.aca.2021.339335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 11/19/2021] [Accepted: 11/25/2021] [Indexed: 11/24/2022]
Abstract
Practical biological and environmental samples always contain both acidic and basic substances, and the samples are always precious. Thus, separation of analytes with different nature from the same sample was of great significance. Successive liquid phase microextraction (sLPME) of acidic and basic analytes under optimal extraction conditions was therefore proposed for the first time. The concept of sLPME was proved by using three acidic analytes (naproxen, flurbiprofen and diclofenac) and three basic analytes (haloperidol, fluoxetine and sertraline) as model analytes, and using polypropylene glycol with an average molecular weight of 4000 (PPG4000) as SLM. The recoveries of all target analytes by sLPME were similar to that by individual LPME due to good affinity of PPG4000 to both acidic and basic analytes. Under optimal extraction conditions, the recoveries for all analytes by sLPME from urine samples were in the range of 62%-95%. Moreover, combined with LC-MS/MS, such sLPME approach was also evaluated with urine samples. The matrix effect of sLPME-LC-MS/MS at different levels for all analytes ranged from -14.1%-13.2%. The linear ranges with R2 > 0.996 were 5-1000 ng mL-1 for basic analytes, and 20-1000 ng mL-1 for acidic analytes except diclofenac (1-1000 ng mL-1). The repeatability and accuracy at four levels were in the range of 3%-10% and 86%-120%, respectively. The limit of detection (LOD, S/N = 3) and limit of quantification (LOQ, S/N = 10) were found to be 0.07-0.49 ng mL-1 and 0.25-1.63 ng mL-1, respectively. Finally, the strategy for constructing a sLPME system was further confirmed with urine, plasma and saliva using another two versatile SLM solvents possessing high affinity to both acidic and basic analytes. Successive LPME enabled separation of acidic and basic analytes from the same sample under optimum extraction conditions for all target analytes. Thus, we believe that the sLPME system will become a potent platform for forensic toxicology analysis, food science, environmental analysis and epidemiology study.
Collapse
|
5
|
Hong C, Dong Y, Zhu R, Yan Y, Shen X, Pedersen-Bjergaard S, Huang C. Effect of sample matrices on supported liquid membrane: Efficient electromembrane extraction of cathinones from biological samples. Talanta 2021; 240:123175. [PMID: 34972062 DOI: 10.1016/j.talanta.2021.123175] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/05/2021] [Accepted: 12/23/2021] [Indexed: 12/14/2022]
Abstract
In this work, the effect of sample matrix on electromembrane extraction (EME) was investigated for the first time using cathinones (log P < 1.0) as polar basic model analytes. Ten supported liquid membranes (SLMs) were tested for EME from spiked buffer solutions, urine, and whole blood samples, respectively. For buffer solutions, SLMs containing aromatic solvents provided higher EME recovery than non-aromatic solvents, which confirmed the significance of cation-π interactions for EME of basic substances. Interestingly, when applied to urine and whole blood samples, aromatic SLMs were less efficient, while non-aromatic SLMs containing abundant hydrogen-bond acidity/basicity were efficient. These observations were explained by SLM fouling, and the antifouling property of the SLM was clearly dependent on the nature of the SLM solvent. Accordingly, a binary SLM containing aromatic 1-ethyl-2-nitrobenzene (ENB) and non-aromatic 1-undecanol (1:1 v/v) was developed. This binary SLM was not prone to fouling, and provided high recoveries of cathinones from urine and whole blood. EME based on this SLM was optimized and evaluated in combination with liquid chromatography tandem mass spectrometry (LC-MS/MS), and the linear ranges with R2 ≥ 0.9903 for cathinones in whole blood and urine were 5-200 ng/mL and 1-200 ng/mL, respectively. The LOD and LOQ of cathinones were ranged from 0.12 to 0.54 ng/mL and 0.38-1.78 ng/mL, respectively. The repeatability and accuracy bias at three levels were ≤11% and within 10%, respectively. In addition, the matrix effect ranged from 88% to 118% was also in compliance with guidelines for bioanalytical method validation provided by the European Medicines Agency.
Collapse
Affiliation(s)
- Changbao Hong
- Department of Forensic Medicine, Huazhong University of Science and Technology, Hangkong Road #13, Wuhan, 430030, Hubei, China
| | - Ying Dong
- Department of Forensic Medicine, Huazhong University of Science and Technology, Hangkong Road #13, Wuhan, 430030, Hubei, China
| | - Ruiqin Zhu
- Department of Forensic Medicine, Huazhong University of Science and Technology, Hangkong Road #13, Wuhan, 430030, Hubei, China
| | - Yibo Yan
- Department of Forensic Medicine, Huazhong University of Science and Technology, Hangkong Road #13, Wuhan, 430030, Hubei, China
| | - Xiantao Shen
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Huazhong University of Science and Technology, Hangkong Road #13, Wuhan, 430030, Hubei, China
| | - Stig Pedersen-Bjergaard
- Department of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, 0316, Oslo, Norway; Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100, Copenhagen, Denmark
| | - Chuixiu Huang
- Department of Forensic Medicine, Huazhong University of Science and Technology, Hangkong Road #13, Wuhan, 430030, Hubei, China.
| |
Collapse
|
6
|
Liu C, Huang D, Yang L, Wu S, Shen X, Pedersen-Bjergaard S, Huang C. Removal of Polymerase Chain Reaction Inhibitors by Electromembrane Extraction. Anal Chem 2021; 93:11488-11496. [PMID: 34383461 DOI: 10.1021/acs.analchem.1c01689] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Polymerase chain reaction (PCR) technology has become the cornerstone of DNA analysis. However, special samples (e.g., forensic samples, soil, food, and mineral medicine) may contain powerful PCR inhibitors. High levels of inhibitors can hardly be sufficiently removed by conventional DNA extraction approaches and may result in the complete failure of PCR. In this work, the removal of PCR inhibitors by electromembrane extraction (EME) was investigated for the first time. To demonstrate the universality of the approach, EME formats with and without supported membranes (termed parallel-EME and μ-EME, respectively) were employed, and both anionic [humic acid (HA)] and cationic (Ca2+) PCR inhibitors were used as models. During EME, charged inhibitors in the sample migrate into the liquid membrane in the presence of an electric field and might further leech into the waste solution, while PCR analytes remain in the sample. After EME, the clearance values for HA at 0.2 and 2.5 mg mL-1 were 94 and 85%, respectively, and that for Ca2+ (275 mM) was 63%. Forensic PCR-short tandem repeat (PCR-STR) genotyping showed that EME significantly reduced the interference by HA in PCR-STR analysis and displayed a higher HA purge capability compared to existing methods. Furthermore, by combining EME with liquid-liquid extraction or solid-phase extraction, satisfactory STR profiles were obtained from HA-rich blood samples. In addition, false-negative reports of bacterial detection in mineral medicine and shrimps were avoided after the removal of Ca2+ by μ-EME. Our research demonstrates the great potential of EME for the purification of DNA samples containing high-level PCR inhibitors and opens up a new application direction for EME.
Collapse
Affiliation(s)
- Cong Liu
- Department of Forensic Medicine, Huazhong University of Science and Technology, Hangkong Road #13, Wuhan 430030, China
| | - Daixin Huang
- Department of Forensic Medicine, Huazhong University of Science and Technology, Hangkong Road #13, Wuhan 430030, China
| | - Liuqian Yang
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hangkong Road #13, Wuhan 430030, China
| | - Shifan Wu
- Department of Forensic Medicine, Huazhong University of Science and Technology, Hangkong Road #13, Wuhan 430030, China
| | - Xiantao Shen
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hangkong Road #13, Wuhan 430030, China
| | - Stig Pedersen-Bjergaard
- School of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, Oslo 0316, Norway.,Faculty of Health and Medical Sciences, School of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, Copenhagen 2100, Denmark
| | - Chuixiu Huang
- Department of Forensic Medicine, Huazhong University of Science and Technology, Hangkong Road #13, Wuhan 430030, China
| |
Collapse
|
7
|
Yuan J, Cao H, Du X, Chen T, Ma A, Pan J. Nonaqueous Miscible Liquid-Liquid Electroextraction for Fast Exhaustive Enrichment of Ultratrace Analytes by an Exponential Transfer and Deceleration Mechanism. Anal Chem 2021; 93:1458-1465. [PMID: 33375784 DOI: 10.1021/acs.analchem.0c03478] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Conventional electrical-field-assisted sample preparation (EFASP) methods rely on analyte transfer between immiscible phases and require at least one aqueous phase in contact with the electrode. In this paper, we report a novel nonaqueous miscible liquid-liquid electroextraction (NMLEE) technique that enables fast exhaustive enrichment of ultratrace analytes from a milliliter-level donor in a vial to a microliter-level acceptor in a tube. Miscible nonaqueous solvents are used for the donor and acceptor to overcome common EFASP problems such as high charge or mass transfer resistance, loss of analytes in the membrane phase, water electrolysis, back-extraction, bubble generation, and difficulties in the application of high voltage for fast migration. According to theoretical derivation and experimental verification results, the concentrations of analytes in the donor and their migration velocity in the acceptor both decrease exponentially with time, and the extraction recovery correlates linearly with the current variation. These mechanisms result in efficient enrichment by forming an analyte-enriched zone and allow the extraction progress and recovery to be monitored and estimated based on the current variation. NMLEE was coupled with liquid chromatography-mass spectrometry to analyze 10 amphetamine-type drugs, atropine, nortriptyline, and methadone in blood and urine samples. This method provided low limits of detection (0.003-0.1 ng·mL-1), satisfactory extraction recoveries (89.6-104.1%), and RSDs (<12.3% for intraday and <8.8% for interday), which met the requirements of the ICH guidelines. This study may contribute to the further development of EFASP methods for effective ultratrace analyses in forensic science.
Collapse
Affiliation(s)
- Jiahao Yuan
- Department of Hygiene Detection Center, School of Public Health, Southern Medical University (Guangdong Provincial Key Laboratory of Tropical Disease Research), #1023 South Sha-Tai Rd, Guangzhou, 510515 Guangdong, China
| | - Hongjie Cao
- Department of Hygiene Detection Center, School of Public Health, Southern Medical University (Guangdong Provincial Key Laboratory of Tropical Disease Research), #1023 South Sha-Tai Rd, Guangzhou, 510515 Guangdong, China
| | - Xiaotong Du
- Department of Hygiene Detection Center, School of Public Health, Southern Medical University (Guangdong Provincial Key Laboratory of Tropical Disease Research), #1023 South Sha-Tai Rd, Guangzhou, 510515 Guangdong, China
| | - Tengteng Chen
- Department of Hygiene Detection Center, School of Public Health, Southern Medical University (Guangdong Provincial Key Laboratory of Tropical Disease Research), #1023 South Sha-Tai Rd, Guangzhou, 510515 Guangdong, China
| | - Ande Ma
- Department of Hygiene Detection Center, School of Public Health, Southern Medical University (Guangdong Provincial Key Laboratory of Tropical Disease Research), #1023 South Sha-Tai Rd, Guangzhou, 510515 Guangdong, China
| | - Jialiang Pan
- Department of Hygiene Detection Center, School of Public Health, Southern Medical University (Guangdong Provincial Key Laboratory of Tropical Disease Research), #1023 South Sha-Tai Rd, Guangzhou, 510515 Guangdong, China
| |
Collapse
|
8
|
Asadi S, Nojavan S, Behpour M, Mahdavi P. Electromembrane extraction based on agarose gel for the extraction of phenolic acids from fruit juices. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1159:122401. [PMID: 33126069 DOI: 10.1016/j.jchromb.2020.122401] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 09/07/2020] [Accepted: 10/05/2020] [Indexed: 10/23/2022]
Abstract
Extraction of polar acidic compounds is a challenging task in electromembrane extraction. In this study, gel-electromembrane extraction was employed for the extraction of phenolic acids as the polar acidic compounds from fruit juices. For this aim, the extraction of phenolic acids from the juice samples (4 mL, pH = 6.0) was carried out across the agarose gel membrane (concentration of agarose; 3% (w/v), pH of gel; 10.0, and thickness of membrane: 3 mm) into the acceptor solution (100 μL, pH = 12.0). Also, this extraction process was conducted by applying the optimum potential (25 V) for 15 min to the extraction system. Under the optimized condition, acceptable linearity (R2 ≥ 0.993) over a concentration range of 10.0-2500 ng mL-1 was achieved. The limits of detection were between 3.0 and 15.2 ng mL-1, while the corresponding repeatabilities ranged from 5.3 to 11.4% (n = 4). The recoveries achieved for the extraction of target compounds were ranged from 26.8 to 74.4%. The proposed method was used for the extraction of phenolic acids from orange, apple and kiwi juices, and the obtained relative recoveries in the range of 78.0-104.2% and RSDs in the range of 6.3 to 11.3% indicated successful extraction of phenolic acids.
Collapse
Affiliation(s)
- Sakine Asadi
- Department of Analytical Chemistry and Pollutants, Shahid Beheshti University, G. C., P.O. Box, 5 19396-4716, Evin, Tehran, Iran
| | - Saeed Nojavan
- Department of Analytical Chemistry and Pollutants, Shahid Beheshti University, G. C., P.O. Box, 5 19396-4716, Evin, Tehran, Iran.
| | - Majid Behpour
- Department of Analytical Chemistry and Pollutants, Shahid Beheshti University, G. C., P.O. Box, 5 19396-4716, Evin, Tehran, Iran
| | - Parisa Mahdavi
- Department of Analytical Chemistry and Pollutants, Shahid Beheshti University, G. C., P.O. Box, 5 19396-4716, Evin, Tehran, Iran
| |
Collapse
|
9
|
Hand RA, Piletska E, Bassindale T, Morgan G, Turner N. Application of molecularly imprinted polymers in the anti-doping field: sample purification and compound analysis. Analyst 2020; 145:4716-4736. [PMID: 32500888 DOI: 10.1039/d0an00682c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The problem posed by anti-doping requirements is one of the great analytical challenges; multiple compound detection at low ng ml-1 levels from complex samples, with requirements for exceptional confidence in results. This review surveys the design, synthesis and application of molecularly imprinted polymers (MIPs) in this field, focusing on the templating of androgenous anabolic steroids (AASs), as the most commonly abused substances, but also other WADA prohibited substances. Commentary on the application of these materials in detection, clean-up and sensing is offered, alongside views on the future of imprinting in this field.
Collapse
Affiliation(s)
- Rachel A Hand
- School of Pharmacy, De Montfort University, Leicester, LE2 9BH, UK.
| | - Elena Piletska
- Department of Chemistry, University of Leicester, Leicester, LE1 7RH, UK
| | - Thomas Bassindale
- Department of Chemistry and Forensic Science, Sheffield Hallam University, Sheffield, S1 1WB, UK
| | - Geraint Morgan
- School of Physical Sciences, The Open University, Milton Keynes, MK7 6AA, UK
| | - Nicholas Turner
- School of Pharmacy, De Montfort University, Leicester, LE2 9BH, UK.
| |
Collapse
|
10
|
Impact of ion balance in electromembrane extraction. Anal Chim Acta 2020; 1124:129-136. [PMID: 32534665 DOI: 10.1016/j.aca.2020.05.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 05/12/2020] [Accepted: 05/14/2020] [Indexed: 01/07/2023]
Abstract
Electromembrane extraction (EME) involves transfer of analyte ions from aqueous sample, through a supported liquid membrane (SLM), and into an aqueous acceptor solution under the influence of an external electrical field. In addition to target analyte ions, the sample also contains matrix ions, and both the sample and acceptor contains background buffer ions to control pH. The ratio between the total amount of ions in sample and acceptor defines the ion balance (χ). Previous publications have discussed the impact of ion balance, but conclusions are contradictory. Therefore, the current paper investigated the ion balance in more detail. From a theoretical point of view, low χ-values favor EME; buffer anions at high concentration in the acceptor migrate into the SLM, while target cations enters the SLM from the sample to maintain electroneutrality. A large number of experiments was performed in this paper to investigate the practical impact of ion balance. Twelve basic drugs were used as model analytes (0.0 < log P < 5.0), and 2-nitrophenyl octyl ether (NPOE) and NPOE + 5% di(2-ethylhexyl) phosphate (DEHP) were used as SLM. With formate buffer pH 3.75 as sample and acceptor, the impact of χ in the range 0.01-10 was studied without bias from differences in pH. Here model analytes were unaffected by ion balance. Buffers containing propionic, butyric, and valeric acid were also tested. These buffer ions migrated more into the SLM, and affected recoveries in several cases. However, this was due to ion pairing rather than effects of ion balance. Similar behaviors from sodium chloride and urine samples were observed with different χ-values. Thus, in the systems tested, almost no impact of ion balance was found, and this was attributed to very low partition of background buffer and matrix ions into the SLM. On the other hand, extractions were in several cases influenced by ion pairing phenomena.
Collapse
|
11
|
Lu J, Qin Y, Wu Y, Meng M, Dong Z, Yu C, Yan Y, Li C, Nyarko FK. Bidirectional molecularly imprinted membranes for selective recognition and separation of pyrimethamine: A double-faced loading strategy. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.117917] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
12
|
Rapid and sensitive detection of synthetic cannabinoids JWH-018, JWH-073 and their metabolites using molecularly imprinted polymer-coated QCM nanosensor in artificial saliva. Microchem J 2020. [DOI: 10.1016/j.microc.2019.104454] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
13
|
Restan MS, Skottvoll FS, Jensen H, Pedersen-Bjergaard S. Electromembrane extraction of sodium dodecyl sulfate from highly concentrated solutions. Analyst 2020; 145:4957-4963. [DOI: 10.1039/d0an00622j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This fundamental work investigated the removal of sodium dodecyl sulfate (SDS) from highly concentrated samples by electromembrane extraction (EME).
Collapse
Affiliation(s)
| | | | - Henrik Jensen
- Department of Pharmacy
- Faculty of Health and Medical Sciences
- University of Copenhagen
- 2100 Copenhagen
- Denmark
| | | |
Collapse
|
14
|
Wan L, Lin B, Zhu R, Huang C, Pedersen-Bjergaard S, Shen X. Liquid-Phase Microextraction or Electromembrane Extraction? Anal Chem 2019; 91:8267-8273. [DOI: 10.1021/acs.analchem.9b00946] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Libin Wan
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hangkong Road #13, Wuhan, Hubei 430030, China
| | - Bin Lin
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hangkong Road #13, Wuhan, Hubei 430030, China
| | - Ruiqin Zhu
- Department of Forensic Medicine, Huazhong University of Science and Technology, Hangkong Road #13, Wuhan, Hubei 430030, China
| | - Chuixiu Huang
- Department of Forensic Medicine, Huazhong University of Science and Technology, Hangkong Road #13, Wuhan, Hubei 430030, China
| | - Stig Pedersen-Bjergaard
- School of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, 0316 Oslo, Norway
- Faculty of Health and Medical Sciences, School of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Xiantao Shen
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hangkong Road #13, Wuhan, Hubei 430030, China
| |
Collapse
|
15
|
Restan MS, Pedersen ME, Jensen H, Pedersen-Bjergaard S. Electromembrane Extraction of Unconjugated Fluorescein Isothiocyanate from Solutions of Labeled Proteins Prior to Flow Induced Dispersion Analysis. Anal Chem 2019; 91:6702-6708. [DOI: 10.1021/acs.analchem.9b00730] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Magnus Saed Restan
- Department of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, 0316 Oslo, Norway
| | - Morten E. Pedersen
- FIDA-Tech ApS, c/o University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Henrik Jensen
- FIDA-Tech ApS, c/o University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| | - Stig Pedersen-Bjergaard
- Department of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, 0316 Oslo, Norway
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark
| |
Collapse
|
16
|
Electromembrane extraction—looking into the future. Anal Bioanal Chem 2018; 411:1687-1693. [DOI: 10.1007/s00216-018-1512-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 11/07/2018] [Accepted: 11/22/2018] [Indexed: 01/15/2023]
|