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Yin H, Yuan Y, Xin L, Hang Q, Zhao L, Qin F, Xiong Z. pH-responsive magnetic graphene oxide composite as an adsorbent with high affinity for rapid capture of nucleosides. Mikrochim Acta 2023; 190:365. [PMID: 37612484 DOI: 10.1007/s00604-023-05945-2] [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: 06/01/2023] [Accepted: 08/06/2023] [Indexed: 08/25/2023]
Abstract
A novel pH-responsive magnetic graphene oxide composite (MGO@PEI-BA) is proposed for the first time as an adsorbent for the rapid capture and detection of nucleosides (cytidine, uridine, guanosine, and adenosine). The morphology, structure, and magnetic properties of the composite were evaluated using various characterization techniques. The results indicated that the composite was successfully fabricated. A series of parameters that affect extraction and elution were optimized through one-factor-at-a-time and Box-Behnken design of response surface methodology (BBD-RSM). The unique layered structures and easily accessible active sites of the composite facilitated molecular transport, resulting in instantaneous equilibrium of nucleosides adsorption within 5 min. Based on this study, a magnetic dispersive micro-solid-phase extraction (MD-μ-SPE) method assisted by the MGO@PEI-BA was developed in combination with UHPLC-UV analysis for the determination of nucleosides in rat urine. Under the optimum conditions, a wide linear range (10-2000 ng mL-1), good linearity (r > 0.99), low detection limits (1-3 ng mL-1), low relative standard deviations (RSDs ≤ 3.9%), and satisfactory recoveries (82.7-96.3%) were achieved. These results demonstrate that the MGO@PEI-BA is an excellent adsorbent for extracting nucleosides from biological samples.
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Affiliation(s)
- Huawen Yin
- School of Pharmacy, Shenyang Pharmaceutical University, No. 26 Huatuo Rd, High & New Tech Development Zone, 117004, Benxi, Liaoning Province, People's Republic of China
| | - Yue Yuan
- School of Pharmacy, Shenyang Pharmaceutical University, No. 26 Huatuo Rd, High & New Tech Development Zone, 117004, Benxi, Liaoning Province, People's Republic of China
| | - Ling Xin
- School of Pharmacy, Shenyang Pharmaceutical University, No. 26 Huatuo Rd, High & New Tech Development Zone, 117004, Benxi, Liaoning Province, People's Republic of China
| | - Qian Hang
- School of Pharmacy, Shenyang Pharmaceutical University, No. 26 Huatuo Rd, High & New Tech Development Zone, 117004, Benxi, Liaoning Province, People's Republic of China
| | - Longshan Zhao
- School of Pharmacy, Shenyang Pharmaceutical University, No. 26 Huatuo Rd, High & New Tech Development Zone, 117004, Benxi, Liaoning Province, People's Republic of China
| | - Feng Qin
- School of Pharmacy, Shenyang Pharmaceutical University, No. 26 Huatuo Rd, High & New Tech Development Zone, 117004, Benxi, Liaoning Province, People's Republic of China.
| | - Zhili Xiong
- School of Pharmacy, Shenyang Pharmaceutical University, No. 26 Huatuo Rd, High & New Tech Development Zone, 117004, Benxi, Liaoning Province, People's Republic of China.
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Behpour M, Shadi M, Nojavan S. Preparation of an efficient magnetic nano-sorbent based on modified cellulose and carboxylated carbon nano-tubes for extraction of pesticides from food and agricultural water samples before GC-FID analysis. Food Chem 2023; 407:135067. [PMID: 36493486 DOI: 10.1016/j.foodchem.2022.135067] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 11/04/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022]
Abstract
This paper reports the direct synthesis approach of carboxamide functionalized magnetic nano-composite named Fe3O4@SiO2-NH2@dialdehyde cellulose (DAC)@CNT-COOH as an effectual sorbent for the co-extraction of seven agricultural insecticides and herbicides from vegetable, fruit, and water samples using the magnetic dispersive micro-solid-phase extraction procedure. Under the optimized extraction conditions (sorbent amount: 18.1 mg; desorption time: 6.5 min; desorption solvent volume: 185 μL; desorption solvent: acetonitrile; extraction time: 9.5 min; pH of sample solution: 7.0, and salt content: 5.0 % w/v sodium chloride), good linearity within the range 0.5-1200 ng/mL (R2 ≥ 0.998) was achieved. Extraction efficiencies were in the range 63.4-84.1 %, the limits of detection were 0.08-1.0 ng/mL, and acceptable relative recoveries (87.6-103.8 %), and precisions were also achieved (RSDs < 6.8 %, n = 3). Ultimately, the obtained results showed that the developed method could be applied to determine trace amounts of desired analytes in various agricultural water and food samples.
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Bazzaz Dilmaghani A, Afshar Mogaddam MR, Monajjemzadeh F, Farajzadeh MA. Deep eutectic solvent-based iron nanoparticles coated by N, S-doped amorphous carbon and its application in magnetic Dµ-SPE combined with DLLME for the extraction of PAHs in eyeliner. ANAL SCI 2023; 39:169-178. [PMID: 36447008 DOI: 10.1007/s44211-022-00212-5] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Accepted: 11/02/2022] [Indexed: 12/05/2022]
Abstract
This work presents a preparation of new magnetic nanoparticles coated with amorphous carbon and their application in dispersive solid-phase extraction in simultaneous extraction of sixteen polycyclic aromatic hydrocarbons from eyeliner. The extraction procedure was hyphenated with a lower density than water dispersive liquid-liquid microextraction (DLLME) for further preconcentration of the analytes to sensitive determination of them with gas chromatography-flame ionization detection. The magnetic adsorbent was prepared sonically from iron pentacarbonyl and then the nanoparticles were coated by N, S-doped amorphous carbon and the deep eutectic solvent prepared from tetrabutyl ammonium chloride and decanoic acid. The magnetic properties of the nanoparticles were studied by vibrating sample magnetometer. Also, scanning electron microscopy was used to investigate the nanoparticles morphology. The extraction procedure was done by migration of the analytes from eyeliner into a proper aqueous solution and their adsorption onto the nanoparticles. Then, the analytes were eluted and more concentrated by the DLLME approach. After validating the method, acceptable limit of detection and broad linear range were accessed in the ranges of 0.25-0.54 and 1.8-250 ng/g, respectively. Relative standard deviation values were ≤ 7.1% for the repeated analyses in the same day (n = 6) and different days (n = 6). Extraction recovery of the method was in the range of 79-96%. The introduced method was successfully used for the analysis of the PAHs in five eyeliner samples and only two of them were identified in all samples at ng/g level.
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Affiliation(s)
- Araz Bazzaz Dilmaghani
- Pharmaceutical and Food Control Department, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Reza Afshar Mogaddam
- Food and Drug Safety Research Center, Tabriz University of Medical Sciences, Tabriz, Iran. .,Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Farnaz Monajjemzadeh
- Pharmaceutical and Food Control Department, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran. .,Food and Drug Safety Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Mir Ali Farajzadeh
- Department of Analytical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran.,Engineering Faculty, Near East University, 99138 Nicosia, Mersin 10, North Cyprus, Turkey
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