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Shi B, Jia Y, Jia D, Tian T, Chen J, Ren X, Lei J, Jia H, Wang H, Wei Q. Aggregation-Induced Electrochemiluminescence of Ir(ppy) 3-Functionalized ZIF-8 for Microcystin-LR Detection via the trans-Cleavage Activity of CRISPR-Cas12a. Anal Chem 2024. [PMID: 39234915 DOI: 10.1021/acs.analchem.4c03495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2024]
Abstract
An efficient electrochemiluminescence (ECL) emitter, Ir(ppy)3-based molecules has recently been reported to exhibit aggregation-induced electrochemiluminescence (AIECL) phenomenon. However, it remains a significant challenge to control the aggregation states of these molecules and achieve uniform aggregates with intense ECL emission. In this work, a biosensor was developed to detect microcystin-LR (MC-LR) based on Ir(ppy)3-functionalized zeolitic imidazolate framework-8 (Ir-ZIF-8) as the ECL emitter and the trans-cleavage activity of CRISPR-Cas12a as the methodological strategy. The Ir-ZIF-8, a functional metal-organic framework (MOF), exhibited the AIECL phenomenon via the spatial domain-limiting effect of encapsulating Ir(ppy)3 into the mesopores of ZIF-8, while the porosity and highly ordered topological structure of ZIF-8 effectively limited the molecular motion of Ir(ppy)3. CRISPR-Cas12a was employed to indiscriminately cleave double-stranded DNA decorated with carboxy tetramethylrhodamine (TAMRA), which quenched the ECL signal of Ir-ZIF-8 by resonance energy transfer and then separated the quencher from Ir-ZIF-8 to reactivate the signal. The concentration of MC-LR was designed to correlate with both the quencher amount and the activity of Cas12a. Then, two linear regression equations for MC-LR detection were constructed to improve the accuracy of the biosensor, and the constructed biosensor showed remarkable reproducibility, stability, and selectivity. The accurate detection of MC-LR with limits of detection of 1.2 and 5.9 pg/mL was made possible by the high quenching efficiency of TAMRA and the effective cutting ability of the editable CRISPR-Cas12a system.
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Affiliation(s)
- Binnan Shi
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, Shandong, China
| | - Yue Jia
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, Shandong, China
| | - Dehao Jia
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, Shandong, China
| | - Tian Tian
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, Shandong, China
| | - Jingui Chen
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, Shandong, China
| | - Xiang Ren
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, Shandong, China
| | - Jianping Lei
- State Key Laboratory of Analytical Chemistry for Life Science, Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Hongying Jia
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, Shandong, China
| | - Huan Wang
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, Shandong, China
| | - Qin Wei
- Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, Shandong, China
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, Republic of Korea
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2
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Carmona-Molero R, Aparicio-Muriana MM, Lara FJ, García-Campaña AM, Olmo-Iruela MD. Capillary electrophoresis tandem mass spectrometry to determine multiclass cyanotoxins in reservoir water and spinach samples. J Chromatogr A 2024; 1717:464666. [PMID: 38266594 DOI: 10.1016/j.chroma.2024.464666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 01/09/2024] [Accepted: 01/18/2024] [Indexed: 01/26/2024]
Abstract
Cyanotoxins constitute a group of toxic secondary metabolites, the presence of which in any water body poses a major health risk. Moreover, advanced organisms such as edible plants exposed to these toxins, are a possible pathway for human exposure. Green analytical chemistry is demanding environmentally friendly analytical techniques. In this sense, we propose the use of capillary electrophoresis coupled to tandem mass spectrometry (CE-MS/MS) to determine a mixture of eight cyanotoxins belonging to three different classes: cyclic peptides (microcystin-LR, microcystin-RR and nodularin), alkaloids (cylindrospermopsin and anatoxin-a) and three isomeric non-protein amino acids (β-methylamino-l-alanine, 2,4-diaminobutyric acid and N-(2-aminoethyl)glycine). Separation was achieved by using an acidic background electrolyte consisting of 2 M formic acid and 20% acetonitrile in water. Parameters affecting MS/MS detection and the sheath-liquid interface were also studied. Finally, a combination of pH-junction, field-amplified sample stacking (FASS) and acid barrage as online preconcentration strategies, was employed to improve sensitivity and efficiency. The online preconcentration applied, in combination with a dual cartridge solid-phase extraction (SPE) system, allows to obtain limits of detection in the very low range of µg·L-1 for these multiclass cyanotoxins in reservoir water samples (from 0.005 to 0.10 µg·L-1). Furthermore, for the first time cyanotoxins are analysed in spinach samples through CE-MS/MS using the same SPE procedure, following lyophilisation and solid-liquid extraction with 6 mL 80 % aqueous MeOH.
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Affiliation(s)
- Rocío Carmona-Molero
- Deparment of Analytical Chemistry, University of Granada, Av. Fuente Nueva s/n, 18071, Spain
| | - M Mar Aparicio-Muriana
- Deparment of Analytical Chemistry, University of Granada, Av. Fuente Nueva s/n, 18071, Spain
| | - Francisco J Lara
- Deparment of Analytical Chemistry, University of Granada, Av. Fuente Nueva s/n, 18071, Spain
| | - Ana M García-Campaña
- Deparment of Analytical Chemistry, University of Granada, Av. Fuente Nueva s/n, 18071, Spain
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Patel VD, Shamsi SA, Sutherland K. Capillary electromigration techniques coupled to mass spectrometry: Applications to food analysis. Trends Analyt Chem 2021; 139. [DOI: 10.1016/j.trac.2021.116240] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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4
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Yuan R, Wen Z, You F, Jiang D, Wang K. Catalysis-induced performance enhancement of an electrochemical microcystin-LR aptasensor based on cobalt-based oxide on a B, N co-doped graphene hydrogel. Analyst 2021; 146:2574-2580. [PMID: 33899062 DOI: 10.1039/d1an00236h] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Microcystin detection is of great significance and an urgent need because of its damage to water environments and human health. In this paper, an electrochemical aptasensor was developed by combining a 3D cobalt-based oxide modified boron and nitrogen co-doped graphene hydrogel (3D BNG/Co) with a DNA aptamer for sensitive detection of microcystin (MC-LR) through differential pulse voltammetry (DPV) technology. By using 3D BNG/Co as a catalyst and [Fe(CN)6]3-/4- as a redox probe, the catalytic current signal was 3.8 times higher than that of the bare glassy carbon electrode, which can better monitor the electron conduction on the electrode surface and then improve the sensitivity. The as-fabricated electrochemical aptasensor displayed a wide detection range (0.1-1000 pmol L-1), low detection limit (0.03 pmol L-1), good sensitivity, and repeatability, which has potential applications for the protection of the ecological environment and human health.
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Affiliation(s)
- Ruishuang Yuan
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P.R. China.
| | - Zuorui Wen
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P.R. China.
| | - Fuheng You
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P.R. China.
| | - Ding Jiang
- School of Petrochemical Engineering, Changzhou University, Changzhou, Jiangsu 213164, P.R. China.
| | - Kun Wang
- Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P.R. China.
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5
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Zheng C, Yin M, Su B, Peng A, Guo Z, Chen X, Chen X. A novel near-infrared light-responsive photoelectrochemical platform for detecting microcystin-LR in fish based on Ag2S cubes and plasmonic Au nanoparticles. Talanta 2021; 221:121447. [DOI: 10.1016/j.talanta.2020.121447] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 07/14/2020] [Accepted: 07/22/2020] [Indexed: 02/06/2023]
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6
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Yao L, He L, Yang Y, Zhang Y, Liu Z, Liang L, Piao Y. Nanobiochar paper based electrochemical immunosensor for fast and ultrasensitive detection of microcystin-LR. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 750:141692. [PMID: 32846246 DOI: 10.1016/j.scitotenv.2020.141692] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 07/25/2020] [Accepted: 08/12/2020] [Indexed: 05/28/2023]
Abstract
A portable, cheap and sensitive paper type electrochemical immunosensor was developed with conductive nanobiochar paper as the conductive layer and utilized for sensitive detection of microcystin-LR (MCLR) toxin in water. The paper immunosensor was constructed by coating of highly conductive and dispersible nanobiochar particle (nBC) and anti-MCLR antibody on the filter paper via dipping-drying method. The presence of MCLR could be specifically quantified amperometrically by the nBC-paper immunosensor with the response time of less than 5 min, and the lowest detection limit of 17 pM (0.017 μg/L) was achieved. Moreover, the proposed immunosensor exhibited high selectivity, reproducibility and storage stability, and was also used for environmental water detection with satisfactory recovery. The successful fabrication of low cost and ubiquitous biochar based paper type electrochemical immunosensing system would have significant value for the development of highly cost-effective electrochemical device.
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Affiliation(s)
- Lan Yao
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China
| | - Lingzhi He
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China
| | - Yuesuo Yang
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China; Key Lab of Eco-restoration of Regional Contaminated Environment (Shenyang University), Ministry of Education, Shenyang 110044, China
| | - Yu Zhang
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China
| | - Zairan Liu
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China
| | - Lina Liang
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China
| | - Yunxian Piao
- Key Laboratory of Groundwater Resources and Environment (Jilin University), Ministry of Education, Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun 130021, China.
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Massey IY, Wu P, Wei J, Luo J, Ding P, Wei H, Yang F. A Mini-Review on Detection Methods of Microcystins. Toxins (Basel) 2020; 12:E641. [PMID: 33020400 PMCID: PMC7601875 DOI: 10.3390/toxins12100641] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 09/28/2020] [Accepted: 09/30/2020] [Indexed: 12/14/2022] Open
Abstract
Cyanobacterial harmful algal blooms (CyanoHABs) produce microcystins (MCs) which are associated with animal and human hepatotoxicity. Over 270 variants of MC exist. MCs have been continually studied due of their toxic consequences. Monitoring water quality to assess the presence of MCs is of utmost importance although it is often difficult because CyanoHABs may generate multiple MC variants, and their low concentration in water. To effectively manage and control these toxins and prevent their health risks, sensitive, fast, and reliable methods capable of detecting MCs are required. This paper aims to review the three main analytical methods used to detect MCs ranging from biological (mouse bioassay), biochemical (protein phosphatase inhibition assay and enzyme linked immunosorbent assay), and chemical (high performance liquid chromatography, liquid chromatography-mass spectrometry, high performance capillary electrophoresis, and gas chromatography), as well as the newly emerging biosensor methods. In addition, the current state of these methods regarding their novel development and usage, as well as merits and limitations are presented. Finally, this paper also provides recommendations and future research directions towards method application and improvement.
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Affiliation(s)
- Isaac Yaw Massey
- Xiangya School of Public Health, Central South University, Changsha 410078, China; (I.Y.M.); (P.W.); (J.W.); (J.L.); (P.D.)
| | - Pian Wu
- Xiangya School of Public Health, Central South University, Changsha 410078, China; (I.Y.M.); (P.W.); (J.W.); (J.L.); (P.D.)
| | - Jia Wei
- Xiangya School of Public Health, Central South University, Changsha 410078, China; (I.Y.M.); (P.W.); (J.W.); (J.L.); (P.D.)
| | - Jiayou Luo
- Xiangya School of Public Health, Central South University, Changsha 410078, China; (I.Y.M.); (P.W.); (J.W.); (J.L.); (P.D.)
| | - Ping Ding
- Xiangya School of Public Health, Central South University, Changsha 410078, China; (I.Y.M.); (P.W.); (J.W.); (J.L.); (P.D.)
| | - Haiyan Wei
- Department of Occupational Medicine and Environmental Toxicology, School of Public Health, Nantong University, Nantong 226019, China
| | - Fei Yang
- Xiangya School of Public Health, Central South University, Changsha 410078, China; (I.Y.M.); (P.W.); (J.W.); (J.L.); (P.D.)
- School of Public Health, University of South China, Hengyang 421001, China
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8
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Xu ZL, Ye SL, Luo L, Hua X, Lai JX, Cai XP, Liang QW, Lei HT, Sun YM, Chen YP, Shen X. Fluorescent enzyme-linked immunoassay based on silane-doped carbon dots for sensitive detection of microcystin-LR in water and crucian samples. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 708:134614. [PMID: 31806319 DOI: 10.1016/j.scitotenv.2019.134614] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/16/2019] [Accepted: 09/21/2019] [Indexed: 06/10/2023]
Abstract
In this work, a fluorescent nanoparticles labeling-free fluorescence enzyme-linked immunoassay (FELISA) has been established for the ultrasensitive detection of microcystin-LR (MC-LR) in water and fish samples. Polyclonal antibody against MC-LR was labeled with horseradish peroxidase (HRP) and used as signal probe for binding with analyte in sample or for coating antigen. After washing of the unbound antibody, the substrate system (2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonate) (ABTS)/H2O2) was added. The oxidation product of ABTS (ox-ABTS) catalyzed by HRP effectively caused the fluorescence quenching of subsequently added silane-doped carbon dots (Si-CDs), and the change in fluorescence intensity of Si-CDs was used to realize the quantitative detection of MC-LR. Under the optimum conditions, the Si-CDs based FELISA method showed a good linear relationship from 0.001 to 3.20 μg L-1 (R2 = 0.994) and provided a low detection limit of 0.6 ng L-1, which was approximately 30-fold lower than that of traditional indirect competitive ELISA. Average recovery values from 79.9% to 109.2% was obtained from spiked water and crucian samples, suggesting its potential application on the monitoring of MR-LR at a trace level.
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Affiliation(s)
- Zhen-Lin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Song-Ling Ye
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Lin Luo
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Xiude Hua
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Jing-Xian Lai
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Xiang-Ping Cai
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Qing-Wen Liang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Hong-Tao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Yuan-Ming Sun
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China
| | - Yi-Ping Chen
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Xing Shen
- Guangdong Provincial Key Laboratory of Food Quality and Safety, South China Agricultural University, Guangzhou 510642, China.
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9
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Abnous K, Danesh NM, Nameghi MA, Ramezani M, Alibolandi M, Lavaee P, Taghdisi SM. An ultrasensitive electrochemical sensing method for detection of microcystin-LR based on infinity-shaped DNA structure using double aptamer and terminal deoxynucleotidyl transferase. Biosens Bioelectron 2019; 144:111674. [PMID: 31518788 DOI: 10.1016/j.bios.2019.111674] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 09/03/2019] [Indexed: 12/27/2022]
Abstract
This study develops a novel electrochemical sensing platform for microcystin-LR (MC-LR) detection. This aptasensor comprises the hybridization of double aptamer to its complementary strand (CS) on the surface of electrode and generation of an Infinity-shaped DNA structure in the absence of target by terminal deoxynucleotidyl transferase (TdT). The formation of Infinity-shaped construction leads to the development of an ultrasensitive aptasensor for MC-LR detection. In the presence of MC-LR, double aptamer is dissociated from its CS because of its high affinity for MC-LR and leaves the surface of electrode. Subsequently, no Infinity-shaped structure is formed following the introduction of TdT and a strong current signal is observed. The proposed method was employed for specific detection of MC-LR in the range from 60 pM to 1000 nM with a detection limit of 15 pM. The credibility of the approach was confirmed by detection of MC-LR in real samples like serum and tap water samples. This study provides a new aptasensor for detection of MC-LR as well as other toxin analysis.
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Affiliation(s)
- Khalil Abnous
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Morteza Alinezhad Nameghi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mohammad Ramezani
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mona Alibolandi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Parirokh Lavaee
- Academic Center for Education, Culture and Research, Research Institute for Industrial Biotechnology, Industrial Biotechnology on Microorganisms, Mashhad, Iran
| | - Seyed Mohammad Taghdisi
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Yan P, Zhang K, Wang L, Tong W, Chen DDY. Quantitative analysis of microcystin variants by capillary electrophoresis mass spectrometry with dynamic pH barrage junction focusing. Electrophoresis 2019; 40:2285-2293. [PMID: 30924152 DOI: 10.1002/elps.201900042] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 03/04/2019] [Accepted: 03/24/2019] [Indexed: 01/08/2023]
Abstract
Dynamic pH junction is an online focusing method in CE based on the electrophoretic mobility difference of analytes in the sample matrix and the background electrolyte. An advantage of this method over the conventional CE is that the sensitivity can be significantly improved. By injecting a long sample plug in the capillary and focusing the analytes at the pH boundary between the background electrolyte and sample matrix, the LOD can be improved by 10-100 folds. The dynamic pH junction method can be easily coupled with ESI-MS. In this work, we used this method for the analysis of microcystins (MCs). The detection limits and dynamic ranges were studied. The separation was optimized by adjusting the injection time, and concentrations and pH values of the background electrolyte. The optimization of analyte focusing leads to enhanced detection response compared to conventional injections, achieving 200-400 fold higher averaged peak heights for four microcystin (MC) variants. More importantly, this method was successfully used for the quantitative analysis of microcystins (MCs) in crude algae samples from natural water bodies, making it promising for practical applications.
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Affiliation(s)
- Ping Yan
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, P. R. China
| | - Keke Zhang
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, P. R. China
| | - Lingyu Wang
- Department of Chemistry, University of British Columbia, Vancouver, BC, Canada
| | - Wenjun Tong
- Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of Biomedical Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing, P. R. China
| | - David D Y Chen
- Department of Chemistry, University of British Columbia, Vancouver, BC, Canada
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Liu M, Sun C, Wang G, Wang Y, Lu H, Shi H, Zhao G. A simple, supersensitive and highly selective electrochemical aptasensor for Microcystin-LR based on synergistic signal amplification strategy with graphene, DNase I enzyme and Au nanoparticles. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.09.197] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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12
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Li S, Cui Y, Wang Y, Dai Z, Shen Q. A shotgun method for high throughput screening microcystins in Margarya melanioides on a triple quadrupole tandem mass spectrometry. Food Chem 2018; 269:89-95. [DOI: 10.1016/j.foodchem.2018.07.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/27/2018] [Accepted: 07/01/2018] [Indexed: 11/17/2022]
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13
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Tang Y, Chai Y, Liu X, Li L, Yang L, Liu P, Zhou Y, Ju H, Cheng Y. A photoelectrochemical aptasensor constructed with core-shell CuS-TiO 2 heterostructure for detection of microcystin-LR. Biosens Bioelectron 2018; 117:224-231. [PMID: 29906770 DOI: 10.1016/j.bios.2018.06.007] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 05/29/2018] [Accepted: 06/04/2018] [Indexed: 01/15/2023]
Abstract
In this work, a CuS-TiO2 heterojunction composite was prepared by dispersedly depositing CuS nanoparticles on TiO2 nanospheres surface with a hydrothermal method, and was then used to construct a photoelectrochemical (PEC) aptasensor for sensitive detection of microcystin-LR (MC-LR) in aquatic environment. The energy bands of CuS nanoparticles and spherical anatase TiO2 were well matched, which enhanced the photo-to-current conversion efficiency. The composite exhibited the enhanced visible light absorption, the improved separation of photo-generated charges, and the reduced self-aggregation of CuS nanoparticles, leading to the enhanced photocurrent response. The PEC aptasensor was constructed by immobilizing CuS-TiO2 composite on ITO electrode with chitosan film that further covalently bound aminated aptamer. After the target, microcystin-LR (MC-LR) as an analyte model, was captured by the aptamer on the aptasensor, it could be oxidized by the photo-generated hole to impede the electron-hole recombination and further amplify the photocurrent. The PEC aptasensor showed superior analytical performance for MC-LR with a linear range of 5.0 × 10-5 nM to 250 nM and a detection limit of 2.0 × 10-5 nM. The detection results with the aptasensor for practical water samples indicated its promising application in environmental monitoring.
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Affiliation(s)
- Yunfei Tang
- Henan Joint International Research Laboratory of environmental pollution control materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan Province 475004, PR China
| | - Yun Chai
- Henan Joint International Research Laboratory of environmental pollution control materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan Province 475004, PR China
| | - Xiaoqiang Liu
- Henan Joint International Research Laboratory of environmental pollution control materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan Province 475004, PR China.
| | - Lele Li
- Henan Joint International Research Laboratory of environmental pollution control materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan Province 475004, PR China
| | - Liwei Yang
- Henan Joint International Research Laboratory of environmental pollution control materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan Province 475004, PR China
| | - Peipei Liu
- Henan Joint International Research Laboratory of environmental pollution control materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan Province 475004, PR China
| | - Yanmei Zhou
- Henan Joint International Research Laboratory of environmental pollution control materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan Province 475004, PR China
| | - Huangxian Ju
- State Key Laboratory of Analytical Chemistry for Life Science, Department of Chemistry, Nanjing University, Nanjing 210023, PR China.
| | - Yunzhi Cheng
- Journal of Henan University (Medical Science), Henan University, Kaifeng, Henan Province 475004, PR China
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14
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Talamini L, Zanato N, Zapp E, Brondani D, Vieira IC. Direct Electrochemical Nano-immunosensor for Microcystin-LR in Seawater. ELECTROANAL 2018. [DOI: 10.1002/elan.201700815] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Lucas Talamini
- Department of Chemistry; Federal University of Santa Catarina, Campus Florianópolis; 88040-900 Florianópolis, SC Brazil
| | - Nicole Zanato
- Department of Chemistry; Federal University of Santa Catarina, Campus Florianópolis; 88040-900 Florianópolis, SC Brazil
| | - Eduardo Zapp
- Department of Exact Science and Education; Federal University of Santa Catarina, Campus Blumenau; 89036-256 Blumenau, SC Brazil
| | - Daniela Brondani
- Department of Exact Science and Education; Federal University of Santa Catarina, Campus Blumenau; 89036-256 Blumenau, SC Brazil
| | - Iolanda Cruz Vieira
- Department of Chemistry; Federal University of Santa Catarina, Campus Florianópolis; 88040-900 Florianópolis, SC Brazil
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15
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Zanato N, Talamini L, Silva TR, Vieira IC. Microcystin-LR label-free immunosensor based on exfoliated graphite nanoplatelets and silver nanoparticles. Talanta 2017; 175:38-45. [DOI: 10.1016/j.talanta.2017.07.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 07/04/2017] [Accepted: 07/05/2017] [Indexed: 11/29/2022]
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16
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Liu M, Ding X, Yang Q, Wang Y, Zhao G, Yang N. A pM leveled photoelectrochemical sensor for microcystin-LR based on surface molecularly imprinted TiO 2@CNTs nanostructure. JOURNAL OF HAZARDOUS MATERIALS 2017; 331:309-320. [PMID: 28273581 DOI: 10.1016/j.jhazmat.2017.02.031] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 01/21/2017] [Accepted: 02/18/2017] [Indexed: 05/14/2023]
Abstract
A simple and highly sensitive photoelectrochemical (PEC) sensor towards Microcystin-LR (MC-LR), a kind of typical cyanobacterial toxin in water samples, was developed on a surface molecular imprinted TiO2 coated multiwalled carbon nanotubes (MI-TiO2@CNTs) hybrid nanostructure. It was synthesized using a feasible two-step sol-gel method combining with in situ surface molecular imprinting technique (MIT). With a controllable core-shell tube casing structure, the resultant MI-TiO2@CNTs are enhanced greatly in visible-light driven response capacity. In comparison with the traditional TiO2 (P25) and non-imprinted (NI-)TiO2@CNTs, the MI-TiO2@CNTs based PEC sensor showed a much higher photoelectric oxidation capacity towards MC-LR. Using this sensor, the determination of MC-LR was doable in a wide linear range from 1.0pM to 3.0nM with a high photocurrent response sensitivity. An outstanding selectivity towards MC-LR was further achieved with this sensor, proven by simultaneously monitoring 100-fold potential co-existing interferences. The superiority of the obtained MC-LR sensor in sensitivity and selectivity is mainly attributed to the high specific surface area and excellent photoelectric activity of TiO2@CNTs heterojunction structure, as well as the abundant active recognition sites on its functionalized molecular imprinting surface. A promising PEC analysis platform with high sensitivity and selectivity for MC-LR has thus been provided.
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Affiliation(s)
- Meichuan Liu
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, Siping Road 1239, Shanghai 200092, China
| | - Xue Ding
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, Siping Road 1239, Shanghai 200092, China
| | - Qiwei Yang
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, Siping Road 1239, Shanghai 200092, China
| | - Yu Wang
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, Siping Road 1239, Shanghai 200092, China
| | - Guohua Zhao
- School of Chemical Science and Engineering, Shanghai Key Lab of Chemical Assessment and Sustainability, Tongji University, Siping Road 1239, Shanghai 200092, China.
| | - Nianjun Yang
- Institute of Materials Engineering, University of Siegen, Paul-Bonatz Str. 9-11, Siegen 57076, Germany.
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17
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Johnson RT, Lunte CE. A Capillary Electrophoresis Electrospray Ionization-Mass Spectrometry Method using a Borate Background Electrolyte for the Fingerprinting Analysis of Flavonoids in Ginkgo biloba Herbal Supplements. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2016; 16:3325-3332. [PMID: 27688816 PMCID: PMC5036526 DOI: 10.1039/c6ay00463f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A laboratory-built sheath liquid capillary electrophoresis-mass spectrometry interface was used to develop a qualitative method for fingerprinting analysis of 14 structurally similar flavones, flavonols, flavonones, and several representative glycosides in plant samples. The migration order of the flavonoids was dependent on a the number of hydroxyl groups present on the flavonoid B-ring, extent of conjugation, number of glycosidic functionalities, and ability of the flavonoid to form stable borate complexes with the background electrolyte. Parent ion scans of the flavonoids yielded [M-H]-, except for catechol containing flavonoids, which were detected as borate adducts. These adducts can be used diagnostically to determine the presence or absence of catechol groups on unknown polyphenolic compounds. Product ion scans of the flavonoid glycosides and borate adducts typically yielded the deprotonated aglycone fragment as the base peak, which could be used to confirm the base structure of the flavonoid. This method's utility was demonstrated by analyzing flavonoids present in ethanolic extracts of Ginkgo biloba herbal supplements.
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Affiliation(s)
- Ryan T Johnson
- Department of Chemistry, Ralph N. Adams Institute for Bioanalytical Chemistry, Lawrence, KS 66047 ; University of Kansas, Lawrence, KS 66047
| | - Craig E Lunte
- Department of Chemistry, Ralph N. Adams Institute for Bioanalytical Chemistry, Lawrence, KS 66047 ; University of Kansas, Lawrence, KS 66047
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18
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Dereplication of known nucleobase and nucleoside compounds in natural product extracts by capillary electrophoresis-high resolution mass spectrometry. Molecules 2015; 20:5423-37. [PMID: 25822081 PMCID: PMC6272742 DOI: 10.3390/molecules20045423] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 03/16/2015] [Accepted: 03/19/2015] [Indexed: 12/15/2022] Open
Abstract
Nucleobase and nucleoside compounds exist widely in various organisms. An often occurring problem in the discovery of new bioactive compounds from natural products is reisolation of known nucleobase and nucleoside compounds. To resolve this problem, a capillary electrophoresis-high resolution mass spectrometry (CE-HR-MS) method providing both rapid separation and accurate mass full-scan MS data was developed for the first time to screen and dereplicate known nucleobase and nucleoside compounds in crude extracts of natural products. Instrumental parameters were optimized to obtain optimum conditions for CE separation and electrospray ionization-time-of-flight mass spectrometry (ESI-TOF/MS) detection. The proposed method was verified to be precise, reproducible, and sensitive. Using this method, known nucleobase and nucleoside compounds in different marine medicinal organisms including Syngnathus acus Linnaeus; Hippocampusjaponicus Kaup and Anthopleura lanthogrammica Berkly were successfully observed and identified. This work demonstrates that CE-HR-MS combined with an accurate mass database may be used as a powerful tool for dereplicating known nucleobase and nucleoside compounds in different types of natural products. Rapid dereplication of known nucleobase and nucleoside compounds allows researchers to focus on other leads with greater potential to yield new substances.
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19
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Machín-Sánchez M, Asensio-Ramos M, Hernández-Borges J, Gil-Rodríguez MC. CE-MS fingerprinting of Laurencia complex algae (Rhodophyta). J Sep Sci 2014; 37:711-6. [PMID: 24415709 DOI: 10.1002/jssc.201301199] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 12/16/2013] [Accepted: 12/20/2013] [Indexed: 11/10/2022]
Abstract
The use of CE-ESI-MS has been considered as a new chemical strategy for the possible discernment of genera and species of the Laurencia complex. After the selection of the CE-MS and the extraction conditions, a total of 28 specimens of the complex, including different species of four genera (Laurencia, Laurenciella, Palisada, and Osmundea) collected from five intertidal locations on the Island of Tenerife (Canary Islands, Spain) were analyzed. CE-MS fingerprints revealed that CE-MS can be used as a useful tool for these studies in order to assess similarities and differences between them and that it constitutes an important starting point for further studies in the field.
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Affiliation(s)
- María Machín-Sánchez
- Departamento de Biología Vegetal (Botánica), Facultad de Farmacia, Universidad de La Laguna (ULL), Avenida Astrofísico Francisco Sánchez, La Laguna (Tenerife), España
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20
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Merel S, Walker D, Chicana R, Snyder S, Baurès E, Thomas O. State of knowledge and concerns on cyanobacterial blooms and cyanotoxins. ENVIRONMENT INTERNATIONAL 2013; 59:303-27. [PMID: 23892224 DOI: 10.1016/j.envint.2013.06.013] [Citation(s) in RCA: 480] [Impact Index Per Article: 43.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Revised: 06/12/2013] [Accepted: 06/18/2013] [Indexed: 05/17/2023]
Abstract
Cyanobacteria are ubiquitous microorganisms considered as important contributors to the formation of Earth's atmosphere and nitrogen fixation. However, they are also frequently associated with toxic blooms. Indeed, the wide range of hepatotoxins, neurotoxins and dermatotoxins synthesized by these bacteria is a growing environmental and public health concern. This paper provides a state of the art on the occurrence and management of harmful cyanobacterial blooms in surface and drinking water, including economic impacts and research needs. Cyanobacterial blooms usually occur according to a combination of environmental factors e.g., nutrient concentration, water temperature, light intensity, salinity, water movement, stagnation and residence time, as well as several other variables. These environmental variables, in turn, have promoted the evolution and biosynthesis of strain-specific, gene-controlled metabolites (cyanotoxins) that are often harmful to aquatic and terrestrial life, including humans. Cyanotoxins are primarily produced intracellularly during the exponential growth phase. Release of toxins into water can occur during cell death or senescence but can also be due to evolutionary-derived or environmentally-mediated circumstances such as allelopathy or relatively sudden nutrient limitation. Consequently, when cyanobacterial blooms occur in drinking water resources, treatment has to remove both cyanobacteria (avoiding cell lysis and subsequent toxin release) and aqueous cyanotoxins previously released. Cells are usually removed with limited lysis by physical processes such as clarification or membrane filtration. However, aqueous toxins are usually removed by both physical retention, through adsorption on activated carbon or reverse osmosis, and chemical oxidation, through ozonation or chlorination. While the efficient oxidation of the more common cyanotoxins (microcystin, cylindrospermopsin, anatoxin and saxitoxin) has been extensively reported, the chemical and toxicological characterization of their by-products requires further investigation. In addition, future research should also investigate the removal of poorly considered cyanotoxins (β-methylamino-alanine, lyngbyatoxin or aplysiatoxin) as well as the economic impact of blooms.
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Affiliation(s)
- Sylvain Merel
- Department of Chemical and Environmental Engineering, University of Arizona, 1133 James E. Rogers Way, Tucson, AZ 85721, USA.
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Hayama T, Katoh K, Aoki T, Itoyama M, Todoroki K, Yoshida H, Yamaguchi M, Nohta H. Liquid chromatographic determination of microcystins in water samples following pre-column excimer fluorescence derivatization with 4-(1-pyrene)butanoic acid hydrazide. Anal Chim Acta 2012; 755:93-9. [DOI: 10.1016/j.aca.2012.10.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Revised: 09/27/2012] [Accepted: 10/04/2012] [Indexed: 10/27/2022]
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22
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Zhao SS, Zhong X, Tie C, Chen DD. Capillary electrophoresis-mass spectrometry for analysis of complex samples. Proteomics 2012; 12:2991-3012. [DOI: 10.1002/pmic.201200221] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 07/10/2012] [Accepted: 07/18/2012] [Indexed: 12/20/2022]
Affiliation(s)
- Shuai Sherry Zhao
- Department of Chemistry; University of British Columbia; Vancouver BC Canada
| | - Xuefei Zhong
- Department of Chemistry; University of British Columbia; Vancouver BC Canada
| | - Cai Tie
- Department of Chemistry; University of British Columbia; Vancouver BC Canada
| | - David D.Y. Chen
- Department of Chemistry; University of British Columbia; Vancouver BC Canada
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23
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Kašička V. Recent developments in CE and CEC of peptides (2009-2011). Electrophoresis 2011; 33:48-73. [DOI: 10.1002/elps.201100419] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2011] [Revised: 09/19/2011] [Accepted: 09/20/2011] [Indexed: 12/12/2022]
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Label-free immunosensing of microcystin-LR using a gold electrode modified with gold nanoparticles. Mikrochim Acta 2011. [DOI: 10.1007/s00604-011-0557-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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