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Chen S, Jiang Y, Li J, You M, Zhang R, Li J, Fu Z, Xie J, Wang Z. In situ formation of solidified supramolecular solvent based dispersive liquid-liquid microextraction for the enrichment of phenylurea herbicides in water, fruit juice, and milk. Food Chem 2024; 450:139298. [PMID: 38615532 DOI: 10.1016/j.foodchem.2024.139298] [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: 09/30/2023] [Revised: 02/15/2024] [Accepted: 04/07/2024] [Indexed: 04/16/2024]
Abstract
A convenient, efficient, and green dispersive liquid-liquid microextraction based on the in situ formation of solidified supramolecular solvents combined with high performance liquid chromatography was developed for the determination of four phenylurea herbicides in liquid samples, including monuron, monolinuron, isoproturon, and chlortoluron. Herein, a novel supramolecular solvent was prepared by the in situ reaction of [P4448]Br and NH4PF6, which had the advantages of low melting point, high density, and good dispersibility. In addition, the microscopic morphology and physical properties of supramolecular solvent were characterized, and the extraction conditions were optimized. The results showed that the analytes had good linearity (R2 > 0.9998) within the linear range. The limits of detection and quantification for the four phenylurea herbicides were in the range of 0.13-0.19 μg L-1 and 0.45-0.65 μg L-1, respectively. The prepared supramolecular solvent is suitable for the efficient extraction of phenylurea herbicides in water, fruit juice, and milk.
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Affiliation(s)
- Shurong Chen
- College of Chemistry and Life Science, Changchun University of Technology, Yan'an Street 2055, Changchun 130012, PR China
| | - Yuhao Jiang
- College of Chemistry and Life Science, Changchun University of Technology, Yan'an Street 2055, Changchun 130012, PR China
| | - Junxian Li
- College of Chemistry and Life Science, Changchun University of Technology, Yan'an Street 2055, Changchun 130012, PR China
| | - Meng You
- College of Chemistry and Life Science, Changchun University of Technology, Yan'an Street 2055, Changchun 130012, PR China
| | - Rongxu Zhang
- College of Chemistry and Life Science, Changchun University of Technology, Yan'an Street 2055, Changchun 130012, PR China
| | - Jilong Li
- College of Chemistry and Life Science, Changchun University of Technology, Yan'an Street 2055, Changchun 130012, PR China
| | - Zhuang Fu
- Sinovac Biotech Ltd, Shangdi West Road 39, Beijing 100085, PR China
| | - Jiahan Xie
- College of Chemistry and Life Science, Changchun University of Technology, Yan'an Street 2055, Changchun 130012, PR China.
| | - Zhibing Wang
- College of Chemistry and Life Science, Changchun University of Technology, Yan'an Street 2055, Changchun 130012, PR China.
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Ocaña-González JA, Aranda-Merino N, Pérez-Bernal JL, Ramos-Payán M. Solid supports and supported liquid membranes for different liquid phase microextraction and electromembrane extraction configurations. A review. J Chromatogr A 2023; 1691:463825. [PMID: 36731330 DOI: 10.1016/j.chroma.2023.463825] [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: 07/31/2022] [Revised: 01/09/2023] [Accepted: 01/22/2023] [Indexed: 01/29/2023]
Abstract
Liquid phase microextraction (LPME) and electromembrane microextraction (EME) can be considered as two of the most popular techniques in sample treatment today. Both techniques can be configurated as membrane-assisted techniques to carry out the extraction. These supports provide the required geometry and stability on the contact surface between two phases (donor and acceptor) and improve the reproducibility of sample treatment techniques. These solid support pore space, once is filled with organic solvents, act as a selective barrier acting as a supported liquid membrane (SLM). The SLM nature is a fundamental parameter, and its selection is critical to carry out successful extractions. There are numerous SLMs that have been successfully employed in a wide variety of application fields. The latter is due to the specificity of the selected organic solvents, which allows the extraction of compounds of a very different nature. In the last decade, solid supports and SLM have evolved towards "green" and environmentally friendly materials and solvents. In this review, solid supports implemented in LPME and EME will be discussed and summarized, as well as their applications. Moreover, the advances and modifications of the solid supports and the SLMs to improve the extraction efficiencies, recoveries and enrichment factors are discussed. Hollow fiber and flat membranes, including microfluidic systems, will be considered depending on the technique, configuration, or device used.
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Affiliation(s)
- Juan Antonio Ocaña-González
- Department of Analytical Chemistry, Faculty of Chemistry, University of Seville, c/Prof. García González s/n, 41012 Seville, Spain
| | - Noemí Aranda-Merino
- Department of Analytical Chemistry, Faculty of Chemistry, University of Seville, c/Prof. García González s/n, 41012 Seville, Spain
| | - Juan Luis Pérez-Bernal
- Department of Analytical Chemistry, Faculty of Chemistry, University of Seville, c/Prof. García González s/n, 41012 Seville, Spain
| | - María Ramos-Payán
- Department of Analytical Chemistry, Faculty of Chemistry, University of Seville, c/Prof. García González s/n, 41012 Seville, Spain.
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Zhou WL, Ding L, Cheng YH, Xu Z, Chen ML, Fu XS. Application of an improved hollow fiber liquid phase microextraction technique coupled to LC-MS/MS to studying migration of fluorescent whitening agents from plastic food contact materials. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2022; 39:1337-1347. [PMID: 35580348 DOI: 10.1080/19440049.2022.2066192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
In this paper, a new hollow fiber liquid-phase microextraction method was developed to improve the extraction of five fluorescent whitening agents that migrated from plastics food contact materials. Influencing factors, such as the types of membrane, the extraction solvent, the stirring speed, the addition of salt ion, and extraction time, were investigated in detail. Under the optimal conditions, high enrichment factors (71-205) can be obtained with 15 μL extraction solvent. The new method is advantageous; the polypropylene hollow fiber membrane modified by sepiolite nanoparticles had excellent solvent binding force and mass transfer effect compared with the conventional extraction technique. The extracts were analyzed by high performance liquid chromatography-tandem mass spectrometry, the limits of detection were 0.3 or 0.9 ng kg-1 with good correlation coefficients (r2 ≥ 0.9940) for the five fluorescent whitening agents. The intra-day and inter-day recoveries ranged between 82.6% and 112%, with a relative standard deviation of less than 12%. The established method was successfully applied to the analysis of fluorescent whitening agent migration from four types of plastic food contact materials immersed in three food simulants.
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Affiliation(s)
- Wen-Li Zhou
- School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, PR China
| | - Li Ding
- School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, PR China
| | - Yun-Hui Cheng
- School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, PR China
| | - Zhou Xu
- School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, PR China
| | - Mao-Long Chen
- School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha, PR China
| | - Xian-Shu Fu
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection and Quarantine, College of Life Science, China Jiliang University, Hangzhou, PR China
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Guo L, Liu J, Li J, Hao L, Liu W, Wang C, Wu Q, Wang Z. A core-shell structured magnetic covalent organic framework as a magnetic solid-phase extraction adsorbent for phenylurea herbicides. J Chromatogr A 2021; 1651:462301. [PMID: 34107399 DOI: 10.1016/j.chroma.2021.462301] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 05/18/2021] [Accepted: 05/24/2021] [Indexed: 11/25/2022]
Abstract
In this work, a core-shell structured magnetic covalent organic framework named as M-TpDAB was constructed with 3,3'-diaminobenzidine (DAB) and 1,3,5-triformylphloroglucinol (Tp) as building units. M-TpDAB was characterized by infrared spectroscopy, nitrogen adsorption-desorption isotherms, powder X-ray diffraction, scanning electron microscopy and transmission electron microscopy. Using the M-TpDAB as adsorbent, a simple and highly effective method was proposed for preconcentrating phenylurea herbicides before high performance liquid-phase chromatography analysis. In the optimized conditions, a good linearity was achieved within the range of 0.15-100 ng mL-1 for water sample, 1.0-100.0 ng mL-1 for tea drink samples. The limits of detection for the analytes were 0.05-0.15 ng mL-1 for water sample and 0.30-0.50 ng mL-1 for drink samples. Satisfactory recoveries of spiked target compounds were in the range of 84.6%-105% for water sample and 80.3%-102% for tea drink samples. Finally, the M-TpDAB based method was successfully used to determine phenylurea herbicides in tea drinks and water samples, demonstrating a good alternative for analyzing trace level of phenylurea herbicides in water samples.
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Affiliation(s)
- Liying Guo
- College of Science, Hebei Agricultural University, Baoding 071001, China
| | - Jiajia Liu
- College of Science, Hebei Agricultural University, Baoding 071001, China
| | - Jinqiu Li
- College of Science, Hebei Agricultural University, Baoding 071001, China
| | - Lin Hao
- College of Science, Hebei Agricultural University, Baoding 071001, China
| | - Weihua Liu
- College of Science, Hebei Agricultural University, Baoding 071001, China
| | - Chun Wang
- College of Science, Hebei Agricultural University, Baoding 071001, China
| | - Qiuhua Wu
- College of Science, Hebei Agricultural University, Baoding 071001, China.
| | - Zhi Wang
- College of Science, Hebei Agricultural University, Baoding 071001, China
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Graphene Assisted in the Analysis of Coumarins in Angelicae Pubescentis Radix by Dispersive Liquid-Liquid Microextraction Combined with 1H-qNMR. Molecules 2021; 26:molecules26092416. [PMID: 33919230 PMCID: PMC8122450 DOI: 10.3390/molecules26092416] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/19/2021] [Accepted: 04/19/2021] [Indexed: 02/06/2023] Open
Abstract
The content of active components in traditional Chinese medicine is relatively small, and it is difficult to detect some trace components with modern analytical instruments, so good pretreatment and extraction are very important in the experiment. Graphene was introduced by a dispersive liquid–liquid microextraction method based on solidification of floating organic drop (DLLME-SFO) with graphene/1-dodecyl alcohol used as the extractant, and this method, combined with quantitative proton nuclear magnetic resonance spectroscopy (1H-qNMR), was used to simultaneously qualitative and quantitative osthole, columbianadin and isoimperatorin in Angelicae Pubescentis Radix. In this experiment, a magnetic stirrer was used for extraction, all NMR spectra were recorded on a Bruker Advance III 600 MHz spectrometer with dimethyl sulfoxide-d6 (DMSO-d6) as deuterated solvent and pyrazine as the internal standard. The influencing factors and NMR parameters in the extraction process were investigated and optimized. In addition, the methodology of the established method was also examined. The quantitative signals of osthole, columbianadin and isoimperatorin were at a chemical shift of δ6.25–δ6.26 ppm, δ6.83–δ6.85 ppm, and δ6.31–δ6.32 ppm. The linear ranges of osthole, columbianadin and isoimperatorin were all 0.0455–2.2727 mg/mL, and R2 were 0.9994, 0.9994 and 0.9995, respectively. The limits of detection of osthole, columbianadin and isoimperatorin were 0.0660, 0.0720, 0.0620 mg, and the limits of quantification of osthole, columbianadin and isoimperatorin were 0.2201, 0.2401, 0.2066 mg/mL. The solution had good stability and repeatability within 24 h. The recoveries of osthole, columbianadin and isoimperatorin were 102.26%, 99.89%, 103.28%, respectively. The established method is simple and easy to operate, which greatly reduces the cumbersome pretreatment of samples and has high extraction efficiency.
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Fabrication of carboxyl functionalized microporous organic network coated stir bar for efficient extraction and analysis of phenylurea herbicides in food and water samples. J Chromatogr A 2021; 1640:461947. [PMID: 33556684 DOI: 10.1016/j.chroma.2021.461947] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/14/2021] [Accepted: 01/24/2021] [Indexed: 12/29/2022]
Abstract
Fabrication of novel coatings continues to be an area of great interest and significance in the development and application of stir bar sorptive extraction (SBSE). In this work, a carboxyl-enriched microporous organic network (MON-2COOH) coated stir bar was designed and fabricated as a novel adsorbent for efficient extraction of four phenylurea herbicides (PUHs) before their determination by high-performance liquid chromatography coupled with photodiode array detector (HPLC-PDA). The MON-2COOH was represented as an effective adsorbent for PUHs due to its large surface area, rigid porous structure, aromatic pore walls and the desired hydrogen bonding sites of introduced carboxyl groups. Variables affecting the SBSE of target analytes were optimized in detail. Under the optimal extraction conditions, favorable correlation coefficients (R2 > 0.996) in the linear range 0.10-250 μg L-1, low limits of detection (LODs, S/N = 3) of 0.025-0.070 μg L-1 and good enrichment factors (46-49) were obtained. Besides, the proposed SBSE-HPLC-PDA method was successfully applied to determine trace PUHs in food and environmental water samples with recoveries in the range of 80.0-104.8% and the precisions (relative standard deviations, RSDs) lower than 9.9% (n = 3). This work revealed the potential of MONs in SBSE of trace contaminants from environmental samples.
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Graphene intercalated with carbon nanosphere: a novel solid-phase extraction sorbent for five carbamate pesticides. Mikrochim Acta 2020; 187:521. [DOI: 10.1007/s00604-020-04497-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 08/18/2020] [Indexed: 01/03/2023]
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Applications of Hollow-Fiber and Related Microextraction Techniques for the Determination of Pesticides in Environmental and Food Samples—A Mini Review. SEPARATIONS 2019. [DOI: 10.3390/separations6040057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Pesticides represent one of the most important groups of analytes in environmental analysis. Moreover, their levels are very frequently determined in food and beverages due to the concern over their possible adverse health effects. Their concentration in samples is usually very low; thus, they have to be preconcentrated. Conventional solvent and solid-phase extractions are mainly used for this purpose, but miniaturized approaches are also being applied more and more often. The present review covers solvent microextractions that use a semi-permeable membrane barrier between the sample and the solvent. The main representatives of this approach are hollow-fiber microextraction (HFME), solvent bar microextraction (SBME), electromembrane extraction (EME), and different variations of those, such as combinations with other sorbent or solvent microextractions, electromigration, etc. The relevant research from the last decade, dealing with the application of these microextractions to the isolation of pesticides from various environmental and food samples, is critically discussed with emphasis on their strengths and weak points.
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Hou X, Tang S, Wang J. Recent advances and applications of graphene-based extraction materials in food safety. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.07.014] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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A magnetic covalent aromatic polymer as an efficient and recyclable adsorbent for phenylurea herbicides. Mikrochim Acta 2019; 186:431. [PMID: 31187290 DOI: 10.1007/s00604-019-3583-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Accepted: 06/03/2019] [Indexed: 10/26/2022]
Abstract
A magnetic covalent aromatic polymer (Fe3O4-NH2-CAP) was synthesized by grinding a covalent aromatic polymer (CAP) and amino-functionalized magnetic nanoparticles (Fe3O4-NH2 NPs). The CAP was prepared by a Friedel-Crafts reaction between biphenyl and 1,3,5-benzenetricarbonyl trichloride. The interaction in the Fe3O4-NH2-CAP is based on hydrogen bond formation between the carbonyl groups in the CAP and the amino groups in the Fe3O4-NH2 NPs. The adsorbent inherits the advantages of the CAP and also has the superior magnetic property of the Fe3O4 NPs. The adsorbent was applied to magnetic solid-phase extraction of six phenylurea herbicides (metoxuron, monuron, chlortoluron, isoproturon, monolinuron, buturon) from soil and water samples. Following elution with 600 μL methanol, the herbicides were quantified by HPLC. The calibration plots are linear in the 1.00-100 ng g-1 herbicide concentration ranges in case of spiked soil samples, and in the 0.10-40 ng mL-1 concentration range for spiked water samples. The limits of detection range from 0.3 to 0.5 ng g-1 (soil) and from 0.01 to 0.03 ng mL-1 (water), with relative standard deviations of <8.0% and < 6.9%, respectively. Graphical abstract Schematic presentation for the preparation of the magnetic covalent aromatic polymer (Fe3O4-NH2-CAP) and of magnetic solid-phase extraction.
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Eskandarpour M, Jamshidi P, Moghaddam MR, Ghasmei JB, Shemirani F. A highly selective magnetic solid-phase extraction method for preconcentration of Cd(II) using N,N′-bis(salicylidene)ethylenediamine in water and food samples. RESEARCH ON CHEMICAL INTERMEDIATES 2019. [DOI: 10.1007/s11164-019-03783-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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12
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Tabani H, Nojavan S, Alexovič M, Sabo J. Recent developments in green membrane-based extraction techniques for pharmaceutical and biomedical analysis. J Pharm Biomed Anal 2018; 160:244-267. [DOI: 10.1016/j.jpba.2018.08.002] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 08/01/2018] [Accepted: 08/03/2018] [Indexed: 01/11/2023]
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Wang Y, Xiao R, Yang E, Wu Q, Wang C, Wang Z. Phthalocyanine-containing polymer derived porous carbon as a solid-phase extraction adsorbent for the enrichment of phenylurea herbicides from water and vegetable samples. SEPARATION SCIENCE PLUS 2018. [DOI: 10.1002/sscp.201700029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yao Wang
- College of Science; Hebei Agricultural University; Baoding Hebei China
| | - Ruobai Xiao
- College of Chemistry, Chemical Engineering & Biotechnology; Donghua University; Shanghai China
| | | | - Qiuhua Wu
- College of Science; Hebei Agricultural University; Baoding Hebei China
| | - Chun Wang
- College of Science; Hebei Agricultural University; Baoding Hebei China
| | - Zhi Wang
- College of Science; Hebei Agricultural University; Baoding Hebei China
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Hu S, Yang X, Xue J, Chen X, Bai XH, Yu ZH. Graphene/dodecanol floating solidification microextraction for the preconcentration of trace levels of cinnamic acid derivatives in traditional Chinese medicines. J Sep Sci 2017; 40:2959-2966. [PMID: 28513989 DOI: 10.1002/jssc.201700169] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 05/04/2017] [Accepted: 05/13/2017] [Indexed: 01/10/2023]
Abstract
A novel graphene/dodecanol floating solidification microextraction followed by HPLC with diode-array detection has been developed to extract trace levels of four cinnamic acid derivatives in traditional Chinese medicines. Several parameters affecting the performance were investigated and optimized. Also, possible microextraction mechanism was analyzed and discussed. Under the optimum conditions (amount of graphene in dodecanol: 0.25 mg/mL; volume of extraction phase: 70 μL; pH of sample phase: 3; extraction time: 30 min; stirring rate: 1000 rpm; salt amount: 26.5% NaCl; volume of sample phase: 10 mL, and without dispersant addition), the enrichment factors of four cinnamic acid derivatives ranged from 26 to 112, the linear ranges were 1.0 × 10-2 -10.0 μg/mL for caffeic acid, 1.3 × 10-3 -1.9 μg/mL for p-hydroxycinnamic acid, 2.8 × 10-3 -4.1 μg/mL for ferulic acid, and 2.7 × 10-3 -4.1 μg/mL for cinnamic acid, with r2 ≥ 0.9993. The detection limits were found to be in the range of 0.1-1.0 ng/mL, and satisfactory recoveries (92.5-111.2%) and precisions (RSDs 1.1-9.5%) were also achieved. The results showed that the approach is simple, effective and sensitive for the preconcentration and determination of trace levels of cinnamic acid derivatives in Chinese medicines. The proposed method was compared with conventional dodecanol floating solidification microextraction and other extraction methods.
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Affiliation(s)
- Shuang Hu
- School of Pharmacy, Shanxi Medical University, Taiyuan, P.R. China
| | - Xiao Yang
- School of Pharmacy, Shanxi Medical University, Taiyuan, P.R. China
| | - Jiao Xue
- School of Pharmacy, Shanxi Medical University, Taiyuan, P.R. China
| | - Xuan Chen
- School of Pharmacy, Shanxi Medical University, Taiyuan, P.R. China
| | - Xiao-Hong Bai
- School of Pharmacy, Shanxi Medical University, Taiyuan, P.R. China
| | - Zhi-Hui Yu
- School of Pharmacy, Shanxi Medical University, Taiyuan, P.R. China
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Alsharif AMA, Tan GH, Choo YM, Lawal A. Efficiency of Hollow Fiber Liquid-Phase Microextraction Chromatography Methods in the Separation of Organic Compounds: A Review. J Chromatogr Sci 2016; 55:378-391. [DOI: 10.1093/chromsci/bmw188] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 11/10/2016] [Indexed: 11/13/2022]
Affiliation(s)
- Ali Mohamed Ali Alsharif
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
- Arab Centre for Desertification and Development of Saharian Societies, Murzuk, Libya
| | - Guan-Huat Tan
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Yeun-Mun Choo
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Abubakar Lawal
- Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
- Department of Pure and Industrial Chemistry, Umaru Musa Yar'adua University Katsina, Nigeria
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Magnetic Biomass Activated Carbon-Based Solid-Phase Extraction Coupled with High Performance Liquid Chromatography for the Determination of Phenylurea Herbicides in Bottled Rose Juice and Water Samples. FOOD ANAL METHOD 2015. [DOI: 10.1007/s12161-015-0181-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Simultaneous determination of phenylurea herbicides in yam by capillary electrophoresis with electrochemiluminescence detection. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 986-987:143-8. [DOI: 10.1016/j.jchromb.2015.02.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 01/19/2015] [Accepted: 02/09/2015] [Indexed: 01/08/2023]
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18
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Liu X, Wang C, Wu Q, Wang Z. Metal-organic framework-templated synthesis of magnetic nanoporous carbon as an efficient absorbent for enrichment of phenylurea herbicides. Anal Chim Acta 2015; 870:67-74. [DOI: 10.1016/j.aca.2015.02.036] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 02/03/2015] [Accepted: 02/10/2015] [Indexed: 10/24/2022]
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