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Wang Z, Xie S, Zhang W, Chen H, Ding Q, Xu J, Yu Q, Zhang L. Mechanochemical synthesis ionic covalent organic frameworks/cotton composites for pipette tip solid-phase extraction of domoic acid in seafood. Talanta 2024; 269:125485. [PMID: 38048683 DOI: 10.1016/j.talanta.2023.125485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/09/2023] [Accepted: 11/23/2023] [Indexed: 12/06/2023]
Abstract
Pipette tip solid-phase extraction (PT-SPE) as a miniaturized solid-phase extraction technique have a wide range of applications in the field of sample pretreatment. In this study, ionic covalent organic frameworks@cotton (iCOF@cotton) were facilely synthesized by mechanochemical grinding method only in half an hour, and used as the adsorbents of PT-SPE. The synthesized iCOF@cotton not only had high specific surface area, suitable pore structure and cationic charge groups of iCOF that can extract polar targets quickly, but also reduced the problem of high back pressure of PT-SPE by the addition of cotton, thus accelerating extraction time. Combined with high performance liquid chromatographic tandem mass spectrometry (HPLC-MS/MS), an efficient and sensitive method was established for detection of domoic acid (DA, a toxin produced by algae). Under the optimal conditions, the proposed analysis method displayed excellent analytical performance, including broad range of linearity (10-1000 pg mL-1), low limit of detection (LOD, 5 pg mL-1), high correlation coefficient (0.9993), satisfactory precision (RSDs ≤6.4 %). In addition, the developed method was applied to the detection of DA in marine samples, and detected trace DA (18.6 pg mL-1) with satisfactory recovery (85.7%-107.2 %). The above results indicated that the prepared iCOF@cotton have great potential as the adsorbents for PT-SPE.
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Affiliation(s)
- Zhiyong Wang
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Province Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Shiye Xie
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Province Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Wenmin Zhang
- Department of Chemistry and Biotechnology, Minjiang Teachers College, Fuzhou, Fujian, 350108, China
| | - Hui Chen
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Province Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Qingqing Ding
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Province Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Jinhua Xu
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Province Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Qidong Yu
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Province Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China
| | - Lan Zhang
- Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Province Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350116, China.
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Xiang JJ, Yuan LJ, Liao QG, Zhang DW, Luo LG. Synthesis of azo-linked covalent organic polymers for pipette tip solid-phase extraction of sedative residues from animal tissues samples. ANAL SCI 2023; 39:1939-1946. [PMID: 37584814 DOI: 10.1007/s44211-023-00406-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 08/01/2023] [Indexed: 08/17/2023]
Abstract
Azo-linked covalent organic polymers (ACOPs) were synthesized by a simple azo reaction, with 2,2'-bis(trifluoromethyl)benzidine and 1,3,5-trihydroxybenzene as the monomers. The preparation process was mild, green, and environmental-friendly, avoiding the use of high temperature, metal catalysis, and harmful organic reagent. The obtained ACOPs were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, powder X-ray diffraction, and Brunauer-Emmett-Teller. With the prepared ACOPs as adsorbent, a method of pipette tip solid-phase extraction-liquid chromatography-tandem mass spectrometry detection (PTSPE-LC-MS/MS) was proposed for the analysis of target sedatives in animal tissues. Furthermore, the parameters for the extraction of five sedatives, including the amount of adsorbent, pH value, ion strength, elution solvent and volume, were investigated. Under the optimized conditions, the linear dynamic range was found from 0.1 to 10.0 μg kg-1, and the limits of detection were ranged from 0.02 to 0.1 μg kg-1. The method was assessed by the analysis of target sedatives in animal tissues, and the recoveries for the spiked pork muscle and pork liver samples were 84-102% and 83-101%, respectively. The results show that the developed method of PTSPE-LC-MS/MS with ACOPs as adsorbent is efficient for the analysis of trace sedatives in animal tissues.
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Affiliation(s)
- Jian Jun Xiang
- Key Laboratory for Quality and Safety Control of Poultry Products, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Agricultural Product Quality Safety and Standards Institute, Jiangxi Academy of Agricultural Sciences, Nanchang, 330200, China
| | - Li Juan Yuan
- Key Laboratory for Quality and Safety Control of Poultry Products, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Agricultural Product Quality Safety and Standards Institute, Jiangxi Academy of Agricultural Sciences, Nanchang, 330200, China
| | - Qie Gen Liao
- Key Laboratory for Quality and Safety Control of Poultry Products, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Agricultural Product Quality Safety and Standards Institute, Jiangxi Academy of Agricultural Sciences, Nanchang, 330200, China.
| | - Da Wen Zhang
- Key Laboratory for Quality and Safety Control of Poultry Products, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Agricultural Product Quality Safety and Standards Institute, Jiangxi Academy of Agricultural Sciences, Nanchang, 330200, China
| | - Lin Guang Luo
- Key Laboratory for Quality and Safety Control of Poultry Products, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Agricultural Product Quality Safety and Standards Institute, Jiangxi Academy of Agricultural Sciences, Nanchang, 330200, China
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Shen Q, Yang H, Li Y, Li S, Chen K, Wang H, Wang H, Ma J. Rapid determination of antiviral drugs in yellow catfish (Pelteobagrus fulvidraco) using graphene/silica nanospheres (G/KCC-1) based pipette tip solid-phase extraction with ultra-performance liquid chromatography-tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2022; 1189:123097. [PMID: 35007897 DOI: 10.1016/j.jchromb.2022.123097] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 11/25/2021] [Accepted: 01/01/2022] [Indexed: 11/19/2022]
Abstract
Yellow catfish (Pelteobagrus fulvidraco) is commonly contaminated by protease inhibitors because of the illegal use of antiviral drugs in aquaculture, so the determination of antiviral drugs is essential in food safety supervision. In this study, a novel sorbent, graphene and silica nanospheres composite (G/KCC-1), was synthesized for pipette-tip-based solid-phase extraction (PT-SPE) and purification of ritonavir, saquinavir, and indinavir in yellow catfish, followed by ultra-performance liquid chromatography and tandem mass spectrometry (UPLC-MS/MS) analysis. The wrinkly structure of G/KCC-1 with center-radial nanowrinkles enlarged the surface area and increased the capacity of absorbing the target analyte. With the proposed G/KCC-1 based PT-SPE UPLC-MS/MS method, the pH of sample solution, aspirating/dispensing cycles for extraction and elution were optimized to be 4.0, 25, and 10 respectively, and the eluting solvent was methanol/ammonia (95:5, v/v) with 0.02 M sodium chloride. This new method was further validated to be linear (correlation coefficient R2, 0.9993-0.9996), sensitive (limit of detection, LOD ≤ 0.8 ng mL-1), accurate (89.3-114.2%), and precise (relative standard deviation, RSD ≤ 6.23%). These results indicated that the proposed method is qualified in bioanalytical method validation and meets the requirements for detecting illegally used antiviral drugs in yellow catfish. The demonstrated G/KCC-1 based PT-SPE UPLC-MS/MS method is a potential analytical method in food and drug administration.
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Affiliation(s)
- Qing Shen
- Zhejiang Provincial Key Laboratory of Anesthesiology, Department of Anesthesiology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China; Collaborative Innovation Center of Seafood Deep Processing, Zhejiang Province Joint Key Laboratory of Aquatic Products Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou, China
| | - Huijuan Yang
- College of Standardization, China Jiliang University, Hangzhou, China
| | - Yunyan Li
- Collaborative Innovation Center of Seafood Deep Processing, Zhejiang Province Joint Key Laboratory of Aquatic Products Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou, China
| | - Shiyan Li
- Zhejiang Fishery Technical Extension Center, Hangzhou, China
| | - Kang Chen
- Collaborative Innovation Center of Seafood Deep Processing, Zhejiang Province Joint Key Laboratory of Aquatic Products Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou, China
| | - Honghai Wang
- Collaborative Innovation Center of Seafood Deep Processing, Zhejiang Province Joint Key Laboratory of Aquatic Products Processing, Institute of Seafood, Zhejiang Gongshang University, Hangzhou, China
| | - Haixing Wang
- Zhejiang Provincial Key Laboratory of Anesthesiology, Department of Anesthesiology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
| | - Jianfeng Ma
- Zhejiang Provincial Key Laboratory of Anesthesiology, Department of Anesthesiology, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.
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Zhang J, Yu C, Chen Z, Luo X, Zhao H, Wu F. Zeolitic imidazolate framework-8/ fluorinated graphene coated SiO 2 composites for pipette tip solid-phase extraction of chlorophenols in environmental and food samples. Talanta 2021; 228:122229. [PMID: 33773733 DOI: 10.1016/j.talanta.2021.122229] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/08/2021] [Accepted: 02/13/2021] [Indexed: 01/12/2023]
Abstract
In this work, a novel composite adsorbent was successfully prepared by zeolite imidazolate framework-8/fluorinated graphene layer-by-layer covalently bonded on SiO2 microspheres, and followed to be packed into micro pipette tip for extraction of trace chlorophenols prior to their detection by high performance liquid chromatography (HPLC). The morphology and structure of adsorbent material was characterized by field emission scanning electron microscopy with energy dispersive spectrometer, X-ray diffraction, and N2 adsorption. The parameters including the amount of adsorbent, sampling volume, sampling rate, sample pH, and desorption solvent affected the extraction performance was systematically investigated by pipette tip solid-phase extraction (PT-SPE) coupled with HPLC analysis. Under the optimized condition, the linearity of this method ranged from 20 to 2000 ng mL-1 for chlorophenols (CPs) with determination coefficient higher than 0.99. The limit of detection (at a signal-to-noise ratio of 3) were in the range 2-20 ng mL-1 for tap water and black tea drinks, 0.2-2 μg g-1 for honey. The relative recoveries of the CPs from spiked samples ranged from 71.8% to 104.7%, with relative standard deviations less than 6.2%. The filled extraction tube exhibited good stability and reproducibility. The proposed method has been successfully used to detect CPs in water and drinks with satisfactory recoveries.
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Affiliation(s)
- Juan Zhang
- Schoolof Chemistry and Environmental Engineering, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, 430205, China.
| | - Chen Yu
- Schoolof Chemistry and Environmental Engineering, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Zhipeng Chen
- Schoolof Chemistry and Environmental Engineering, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Xiaogang Luo
- School of Chemical Engineering and Pharmacy, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, 430205, China; School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Haiyan Zhao
- School of Pharmaceutical Sciences, South-central University for Nationalities, Wuhan, 430074, China
| | - Fengshou Wu
- School of Chemical Engineering and Pharmacy, Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, 430205, China.
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Wu X, Shen S, Yan H, Yuan Y, Chen X. Efficient enrichment and analysis of atrazine and its degradation products in Chinese Yam using accelerated solvent extraction and pipette tip solid-phase extraction followed by UPLC-DAD. Food Chem 2020; 337:127752. [PMID: 32777573 DOI: 10.1016/j.foodchem.2020.127752] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 07/29/2020] [Accepted: 08/01/2020] [Indexed: 11/16/2022]
Abstract
The Chinese Yam (Dioscorea opposita) is cultivated widely in China. However, there are potential safety risks associated with herbicide residues in Chinese Yam because of its characteristics and unregulated use of pesticides. We developed an efficient sample preparation technique for simultaneous analysis of atrazine and its degradation products in Chinese Yam using accelerated solvent extraction and pipette tip solid-phase extraction followed by UPLC-DAD analysis. Molecularly imprinted polymer (MIP) were used as the adsorbent material. Method performance was evaluated and our results showed the limit of quantification was 1-3 μg/ kg, with recoveries in the range 79.2-103.8%. When compared with other methods, this method provided superior performance in terms of sensitivity, accuracy, and precision. This method is, therefore, expected to be useful in supervised residue analysis.
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Affiliation(s)
- Xingqiang Wu
- College of Chemistry and Environmental Science, Key Laboratory of Analytical Science and Technology of Hebei Province Hebei University, Baoding 071002, China
| | - Shigang Shen
- College of Chemistry and Environmental Science, Key Laboratory of Analytical Science and Technology of Hebei Province Hebei University, Baoding 071002, China.
| | - Hongyuan Yan
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis & College of Public Health, Hebei University, Baoding 071002, China.
| | - Yanan Yuan
- College of Chemistry and Environmental Science, Key Laboratory of Analytical Science and Technology of Hebei Province Hebei University, Baoding 071002, China
| | - Xi Chen
- College of Chemistry and Environmental Science, Key Laboratory of Analytical Science and Technology of Hebei Province Hebei University, Baoding 071002, China
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Lu Y, Li P, Yang C, Han Y, Yan H. One pot green synthesis of m-aminophenol-urea-glyoxal resin as pipette tip solid-phase extraction adsorbent for simultaneous determination of four plant hormones in watermelon juice. J Chromatogr A 2020; 1623:461214. [PMID: 32505267 DOI: 10.1016/j.chroma.2020.461214] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 05/03/2020] [Accepted: 05/05/2020] [Indexed: 12/24/2022]
Abstract
Plant hormones (PHs) are a type of pesticide that can potentially affect human health. Therefore, their quantitative detection is particularly important. In this study, a green and economic method for the simultaneous extraction and determination of four PHs, namely thidiazuron, forchlorfenuron, 1-naphthylacetic acid, and 2-naphthoxyacetic acid, in watermelon juice was developed by using m-aminophenol-urea-glyoxal resin as the adsorbent for pipette tip solid phase extraction (PT-SPE) coupled with liquid chromatography. The resin was synthesized via a simple (one pot hydrothermal synthesis) and green (ethanol as the solvent and glyoxal as crosslinking agent) process. The synthesized resin possesses multiple functional groups (hydroxyl, amino, and imino, among others), high adsorption capacity, larger specific surface area than the urea-glyoxal resin and m-aminophenol-glyoxal resin, and can be regenerated easily. The PT-SPE device is simple, cheap, and easy to obtain, and the adsorbent dosage is only 5.0 mg. The proposed method has a wide linear detection range, high recovery, good precision, and high sensitivity, and satisfies the measurement requirements for detecting trace levels of PHs in fruits and vegetables.
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Affiliation(s)
- Yanke Lu
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Public Health, Hebei University, Baoding 071002, China
| | - Pengfei Li
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Public Health, Hebei University, Baoding 071002, China
| | - Chunliu Yang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Public Health, Hebei University, Baoding 071002, China.
| | - Yehong Han
- Key Laboratory of Analytical Science and Technology of Hebei Province, College of pharmacy, Hebei University, Baoding 071002, China
| | - Hongyuan Yan
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Public Health, Hebei University, Baoding 071002, China; Key Laboratory of Analytical Science and Technology of Hebei Province, College of pharmacy, Hebei University, Baoding 071002, China.
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Chen D, Miao H, Zhao Y, Wu Y. A simple liquid chromatography-high resolution mass spectrometry method for the determination of glyphosate and aminomethylphosphonic acid in human urine using cold-induced phase separation and hydrophilic pipette tip solid-phase extraction. J Chromatogr A 2019; 1587:73-78. [PMID: 30471790 DOI: 10.1016/j.chroma.2018.11.030] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 11/07/2018] [Accepted: 11/16/2018] [Indexed: 11/20/2022]
Abstract
Recently, the phenomenon of acute poisoning events caused by glyphosate (GLY) had frequently occurred all over the world. The present work reported a simple liquid chromatography-high resolution mass spectrometry (LC-HRMS) method for direct determination of GLY and its metabolite aminomethylphosphonic acid (AMPA) in human urine by combining cold-induced phase separation (CIPS) with hydrophilic pipette tip solid-phase extraction (PTSPE). First, a urine sample was mixed with acetonitrile at a 80% concentration to precipitate proteins. After centrifugation, the mixture was performed a CIPS at -20 °C to enrich GLY and AMPA (six-fold) in the lower water phase which was further performed PTSPE procedure. PTSPE as a miniaturized procedure of SPE, combined with a manual accu-jet® Pro Pipette Controller, was used to extract GLY and AMPA, in which a new type of hydrophilic adsorbent (HILIC powder) based on amide-modified silica was selected as the adsorption of GLY and AMPA. The key factors including the type and the amount of adsorbent, the loading extraction solution, the type and volume of eluent, and the number of aspirating/dispensing cycles were investigated in detail. Meanwhile, the selectivity and sensitivity of GLY and AMPA analysis were improved by the use of LC-HRMS based on targeted single ion monitoring (tSIM) mode without tedious derivatization. This method made a full use of the advantages of these techniques by combining efficient enrichment, effective extraction and selective separation in a simple way. Finally, a comprehensive validation of the method was rigorously executed and the results indicated that the validated method afforded desired linearity, precision, accuracy, and sensitivity.
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Affiliation(s)
- Dawei Chen
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, 100021, China
| | - Hong Miao
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, 100021, China
| | - Yunfeng Zhao
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, 100021, China.
| | - Yongning Wu
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, China National Center for Food Safety Risk Assessment, Beijing, 100021, China.
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Chen H, Yuan Y, Xiang C, Yan H, Han Y, Qiao F. Graphene/multi-walled carbon nanotubes functionalized with an amine-terminated ionic liquid for determination of (Z)-3-(chloromethylene)-6-fluorothiochroman-4-one in urine. J Chromatogr A 2016; 1474:23-31. [PMID: 27825702 DOI: 10.1016/j.chroma.2016.10.076] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 10/16/2016] [Accepted: 10/26/2016] [Indexed: 01/08/2023]
Abstract
A new type of amine-terminated-ionic-liquid-functionalized graphene/multi-walled carbon nanotubes hybrid material (IL-G/MWCNTs) was synthesized and used as an adsorbent in miniaturized pipette tip solid-phase extraction (PT-SPE) coupled with liquid chromatography for the isolation and determination of (Z)-3-(chloromethylene)-6-fluorothiochroman-4-one (CMFT) in urine. Parameters for the preparation of IL-G/MWCNTs and the PT-SPE procedure, including the mass ratio of graphene oxide and oxidized multi-walled carbon nanotubes, the mass ratio of graphene oxide and the ionic liquid, and the type and volume of washing and elution solvents were optimized to achieve higher extraction efficiency. Good linearity of the method was achieved in the range 0.03-5.0μgmL-1 with a coefficient of determination (r2) of 0.9999. The limits of detection and quantification were 0.009 and 0.030μgmL-1, respectively. The intra- and inter-day precisions, expressed as relative standard deviations (RSDs), were evaluated by performing replicate analyses of samples spiked at 0.1μgmL-1 on the same day (n=6) and over three consecutive days, and were 4.8 and 5.5%, respectively. Recoveries between 73.9 and 93.9% were obtained at three spiking levels, with RSDs≤7.9%. Five batches of the adsorbent were investigated to confirm the reliability of the preparation method.
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Affiliation(s)
- Huanhuan Chen
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education & College of Pharmacy, Hebei University, Baoding 071002, China
| | - Yanan Yuan
- Key Laboratory of Analytical Science and Technology of Hebei Province & College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
| | - Can Xiang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education & College of Pharmacy, Hebei University, Baoding 071002, China
| | - Hongyuan Yan
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education & College of Pharmacy, Hebei University, Baoding 071002, China; Key Laboratory of Analytical Science and Technology of Hebei Province & College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China.
| | - Yehong Han
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education & College of Pharmacy, Hebei University, Baoding 071002, China
| | - Fengxia Qiao
- Department of Biochemistry, Baoding University, Baoding 071002, China.
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Shen Q, Gong L, Baibado JT, Dong W, Wang Y, Dai Z, Cheung HY. Graphene based pipette tip solid phase extraction of marine toxins in shellfish muscle followed by UPLC-MS/MS analysis. Talanta 2013; 116:770-5. [PMID: 24148472 DOI: 10.1016/j.talanta.2013.07.042] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Revised: 07/17/2013] [Accepted: 07/21/2013] [Indexed: 11/15/2022]
Abstract
Graphene is a novel carbonic material with great potentials for the use as sorbent due to its ultrahigh surface area. Herein, we report the use of graphene as sorbent in solid-phase extraction (SPE) using pipette tip as cartridge namely GPT-SPE, together with ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS), for the analysis of lipophilic marine toxins (LMTs), including yessotoxins (YTX), okadaic acid (OA), dinophysistoxin-1 (DTX1), gymnodimine (GYM), spirolides-1 (SPX1), pectenotoxin-2 (PTX2) and azaspiracid-1 (AZA1) in shellfish. The GPT-SPE procedure was optimized and the performance of graphene was fully validated. Results with high-sensitivity and good reproducibility was obtained and compared with that of other sorbents like C18 silica, multi-walled carbon nanotubes (MWCNTs), commercial Oasis HLB, and Strata-X for the extraction of LMTs, which showed superiority and advantages of graphene, such as good recoveries, stability and compatibility with various solvents. In order to exhibit the potentials of graphene as an excellent sorbent material, 67 mussel samples from six coastal cities of China were analyzed. OA was found to be the dominant contaminant, while YTX was also detected with low level.
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Affiliation(s)
- Qing Shen
- Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong
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