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Wang Y, Hou C, Dai Y, Chu L, Geng S, Zheng S, Kang X. Determination of aflatoxin B1 by novel nanofiber-packed solid-phase extraction coupled with a high performance liquid chromatography-fluorescence detector. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:472-481. [PMID: 36602291 DOI: 10.1039/d2ay01753a] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
A novel analytical proposal based on nanofiber-packed solid-phase extraction coupled with high performance liquid chromatography-fluorescence detector (HPLC-FLD) has been successfully developed for determining aflatoxin B1 (AFB1) in foods. Four types of nanofibers, including polystyrene (PS) nanofibers, polypyrrole (PPY) nanofibers, polystyrene-acrylic resin (PS-AR) nanofibers, and polystyrene-polyvinyl pyrrolidone (PS-PVP) nanofibers, were fabricated by electrospinning and utilized to prepare a home-made extraction device. In this study, the factors of different fibers, namely, fiber dosage, pH of extraction solution, type of salt ion, concentration of salt ion, and volume of the eluent were optimized. Under optimized conditions, the method showed good linearity in the range of 0.1-40 ng mL-1 with a correlation coefficient greater than 0.999 and good inter-day accuracy (90.8-112.7% recovery) and precision (1.8-3.6% intra-day RSDs, 2.6% inter-day RSD), and the limit of detection (LOD) was 0.05 ng mL-1. Due to its cost-effective, time-saving, environmentally friendly, and simple performance, it has the potential to be utilized to determine aflatoxins in complicated matrices.
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Affiliation(s)
- Yunzheng Wang
- School of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Chen Hou
- School of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yuqi Dai
- School of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Lanling Chu
- School of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
- School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
| | - Shiwei Geng
- Animal Products Quality Inspection and Test Center in Jiangsu Province, Nanjing 210036, China
| | - Shenglan Zheng
- Animal Products Quality Inspection and Test Center in Jiangsu Province, Nanjing 210036, China
| | - Xuejun Kang
- School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China
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Lu X, He J, Xie J, Zhou Y, Liu S, Zhu Q, Lu H. Preparation of hydrophobic hierarchical pore carbon-silica composite and its adsorption performance toward volatile organic compounds. J Environ Sci (China) 2020; 87:39-48. [PMID: 31791512 DOI: 10.1016/j.jes.2019.05.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 04/29/2019] [Accepted: 05/06/2019] [Indexed: 06/10/2023]
Abstract
Carbon-silica materials with hierarchical pores consisting of micropores and mesopores were prepared by introducing nanocarbon microspheres derived from biomass sugar into silica gel channels in a hydrothermal environment. The physicochemical properties of the materials were characterized by nitrogen physical adsorption (BET), scanning electron microscopy (SEM), and thermogravimetric (TG), and the adsorption properties of various organic waste gases were investigated. The results showed that microporous carbon materials were introduced successfully into the silica gel channels, thus showing the high adsorption capacity of activated carbon in high humidity organic waste gas, and the high stability and mechanical strength of the silica gel. The dynamic adsorption behavior confirmed that the carbon-silica material had excellent adsorption capacity for different volatile organic compounds (VOCs). Furthermore, the carbon-silica material exhibited excellent desorption characteristics: adsorbed toluene was completely desorbed at 150°C, thereby showing superior regeneration characteristics. Both features were attributed to the formation of hierarchical pores.
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Affiliation(s)
- Xiaoai Lu
- Research Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Junqian He
- Research Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Jing Xie
- Research Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Ying Zhou
- Research Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Shuo Liu
- Hangzhou Runxin Technology Co. Ltd, Hangzhou 310014, China
| | - Qiulian Zhu
- Research Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Hanfeng Lu
- Research Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
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Song M, Song B, Meng F, Chen D, Sun F, Wei Y. Incorporation of humic acid into biomass derived carbon for enhanced adsorption of phenol. Sci Rep 2019; 9:19931. [PMID: 31882717 PMCID: PMC6934675 DOI: 10.1038/s41598-019-56425-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 12/11/2019] [Indexed: 01/13/2023] Open
Abstract
In the present work, the biomass derived carbon decorated with humic acid (HC), was synthesized through impregnation method for the adsorption of phenol from water environment. Humic acids contain more oxygen-containing functional groups and hydrogen bonds, which promotes the binding between HC and phenol molecules. The results indicated that the adsorption performance of HC to phenol was better than that of commercial activated carbon. Moreover, in addition to physical absorption, the chemical reaction between carboxylic groups on the carbon surface and hydroxyl in phenol also played an important role during the process. The adsorption behavior of HC was described by equilibrium and kinetics parameters. Pseudo-second order model can describe the adsorption process well. Langmuir model was more suitable for the equilibrium adsorption data fitting, indicating that the adsorption mechanism of phenol on carbon surface tends to be monolayer adsorption. Considering practical application, UV254, chemical oxygen demand (COD) and ammonia from raw wastewater were selected as target contaminants and the corresponding adsorption experiments were carried out. The results displayed that HC exhibited excellent adsorption performance, especially for UV254, indicating that as-prepared carbon material had potential application for the control of certain organic pollutants in actual wastewater.
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Affiliation(s)
- Min Song
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, Jiangsu, 210096, China.
| | - Bing Song
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, Jiangsu, 210096, China
| | - Fanyue Meng
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, Jiangsu, 210096, China
| | - Dandan Chen
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, Jiangsu, 210096, China.,School of Energy & Mechanical Engineering, Nanjing Normal University, Nanjing, Jiangsu, 210023, China
| | - Fei Sun
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, Jiangsu, 210096, China
| | - Yuexing Wei
- Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing, Jiangsu, 210096, China
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Meng F, Song M, Wei Y, Wang Y. The contribution of oxygen-containing functional groups to the gas-phase adsorption of volatile organic compounds with different polarities onto lignin-derived activated carbon fibers. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:7195-7204. [PMID: 30656581 DOI: 10.1007/s11356-019-04190-6] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 01/07/2019] [Indexed: 06/09/2023]
Abstract
Lignin-based activated carbon fibers (LCFK) were prepared by electrospinning method and evaluated in adsorption of volatile organic compounds (VOCs). Batch adsorption experiments for various component were carried out in a fixed-bed reactor. The molecular polarity of VOCs plays a pivotal role in the monocomponent dynamic adsorption. As a result, the adsorption capacity of toluene was larger than that of methanol or acetone. In the various multicomponent atmospheres (without water), the components interact with each other and competitive adsorption phenomenon occurs, resulting in the adsorption capacity of each component decreased significantly. Also, the samples before and after adsorption were characterized via Fourier transform infrared (FTIR), X-ray photoelectron spectroscopy (XPS), and Boehm titration. The results reveal that methanol and acetone, controlled by physical adsorption, prefer to be adsorbed on polar groups on the surface of LCFK through the dipole-dipole interactions (i.e., van der Waals' forces). Differently, the adsorption of toluene onto LCFK was controlled by physical and chemical processes, and the lactone groups have a positive contribution to the adsorption of toluene. It was also observed that water vapor can enhance the negative effect on the adsorption of VOCs, especially for toluene. The results from this study will be valuable for explaining the mechanisms of competitive adsorption among each component in the various multicomponent atmospheres and understanding the contribution of chemical functional groups on the surface of LCFK in the adsorption process.
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Affiliation(s)
- Fanyue Meng
- Ministry of Education of Key Laboratory of Energy Thermal Conversion and Control, School of Energy and Environment, Southeast University, Nanjing, 210096, China
| | - Min Song
- Ministry of Education of Key Laboratory of Energy Thermal Conversion and Control, School of Energy and Environment, Southeast University, Nanjing, 210096, China.
| | - Yuexing Wei
- Ministry of Education of Key Laboratory of Energy Thermal Conversion and Control, School of Energy and Environment, Southeast University, Nanjing, 210096, China
| | - Yuling Wang
- Ministry of Education of Key Laboratory of Energy Thermal Conversion and Control, School of Energy and Environment, Southeast University, Nanjing, 210096, China
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Ghorani B, Kadkhodaee R, Rajabzadeh G, Tucker N. Assembly of odour adsorbent nanofilters by incorporating cyclodextrin molecules into electrospun cellulose acetate webs. REACT FUNCT POLYM 2019. [DOI: 10.1016/j.reactfunctpolym.2018.11.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Della Pina C, De Gregorio MA, Clerici L, Dellavedova P, Falletta E. Polyaniline (PANI): an innovative support for sampling and removal of VOCs in air matrices. JOURNAL OF HAZARDOUS MATERIALS 2018; 344:308-315. [PMID: 29121599 DOI: 10.1016/j.jhazmat.2017.10.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 09/07/2017] [Accepted: 10/05/2017] [Indexed: 06/07/2023]
Abstract
Polyaniline (PANI)-based materials for both removal and sampling of volatile organic compounds (VOCs) from air by rapid adsorption/desorption processes have been developed. The polymer was synthesized in form of emeraldine as both salt and base using different synthetic approaches, a traditional one and a "green" one. VOCs adsorption/desorption efficiency was evaluated for all the materials analyzing the desorbed VOCs fractions by GC/MS technique and obtaining results similar to the presently adopted method employing commercial activated carbon. Most important, in this work it has been demonstrated for the first time that the use of PANI-based sorbents allowed the substitution of the toxic CS2, recommended in official methods, with the less hazardous CH3OH as the VOCs extraction solvent. Moreover, a complete regeneration of the polymers could be realized by a few rapid washing steps. Finally, the best PANI-based material was subjected to recycling tests thereby showing a high adsorption/desorption efficiency retention up to four runs.
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Affiliation(s)
- Cristina Della Pina
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi, 19, 20133, Milano, Italy
| | | | - Laura Clerici
- Settore Laboratori, ARPA Lombardia, via Rosellini, 17, 20124, Milano, Italy
| | | | - Ermelinda Falletta
- Dipartimento di Chimica, Università degli Studi di Milano, via C. Golgi, 19, 20133, Milano, Italy.
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Zhang X, Gao B, Creamer AE, Cao C, Li Y. Adsorption of VOCs onto engineered carbon materials: A review. JOURNAL OF HAZARDOUS MATERIALS 2017; 338:102-123. [PMID: 28535479 DOI: 10.1016/j.jhazmat.2017.05.013] [Citation(s) in RCA: 498] [Impact Index Per Article: 71.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 05/07/2017] [Accepted: 05/09/2017] [Indexed: 05/21/2023]
Abstract
Volatile organic compounds (VOCs) severely threaten human health and the ecological environment because most of them are toxic, mutagenic, and carcinogenic. The persistent increase of VOCs together with the stringent regulations make the reduction of VOC emissions more imperative. Up to now, numerous VOC treatment technologies have emerged, such as incineration, condensation, biological degradation, absorption, adsorption, and catalysis oxidation et al. Among them, the adsorption technology has been recognized as an efficient and economical control strategy because it has the potential to recover and reuse both adsorbent and adsorbate. Due to their large specific surface area, rich porous structure, and high adsorption capacity, carbonaceous adsorbents are widely used in gas purification, especially with respect to VOC treatment and recovery. This review discusses recent research developments of VOC adsorption onto a variety of engineered carbonaceous adsorbents, including activated carbon, biochar, activated carbon fiber, carbon nanotube, graphene and its derivatives, carbon-silica composites, ordered mesoporous carbon, etc. The key factors influence the VOC adsorption are analyzed with focuses on the physiochemical characters of adsorbents, properties of adsorbates as well as the adsorption conditions. In addition, the sources, health effect, and abatement methods of VOCs are also described.
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Affiliation(s)
- Xueyang Zhang
- School of Environmental Engineering, Xuzhou University of Technology, Xuzhou, 221000, PR China; Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP(3)), Shanghai, 200433, PR China; Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Bin Gao
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA.
| | - Anne Elise Creamer
- Department of Agricultural and Biological Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Chengcheng Cao
- School of Environmental Engineering, Xuzhou University of Technology, Xuzhou, 221000, PR China
| | - Yuncong Li
- Tropical Research and Education Center, University of Florida, Homestead, FL, 33031, USA
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Liu J, Chen X, Wang P, Fu X, Liu K, Fang Y. Specially Treated Aramid Fiber Stabilized Gel‐Emulsions: Preparation of Porous Polymeric Monoliths and Highly Efficient Removing of Airborne HCHO. Macromol Rapid Commun 2017; 38. [DOI: 10.1002/marc.201700270] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 05/31/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Jianfei Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education)School of Materials Science and EngineeringShaanxi Normal University Xi'an 710062 P. R. China
| | - Xiangli Chen
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education)School of Chemistry and Chemical EngineeringShaanxi Normal University Xi'an 710062 P. R. China
| | - Pei Wang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education)School of Chemistry and Chemical EngineeringShaanxi Normal University Xi'an 710062 P. R. China
| | - Xuwei Fu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education)School of Chemistry and Chemical EngineeringShaanxi Normal University Xi'an 710062 P. R. China
| | - Kaiqiang Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education)School of Chemistry and Chemical EngineeringShaanxi Normal University Xi'an 710062 P. R. China
| | - Yu Fang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education)School of Chemistry and Chemical EngineeringShaanxi Normal University Xi'an 710062 P. R. China
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Comparison of Adsorption/Desorption of Volatile Organic Compounds (VOCs) on Electrospun Nanofibers with Tenax TA for Potential Application in Sampling. PLoS One 2016; 11:e0163388. [PMID: 27776140 PMCID: PMC5077155 DOI: 10.1371/journal.pone.0163388] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2016] [Accepted: 09/06/2016] [Indexed: 11/19/2022] Open
Abstract
The objective of this study was to compare the adsorption/desorption of target compounds on homemade electrospun nanofibers, polystyrene (PS) nanofibers, acrylic resin (AR) nanofibers and PS-AR composite nanofibers with Tenax TA. Ten volatile organic compounds (VOCs) were analyzed by preconcentration onto different sorbents followed by desorption (thermal and solvent orderly) and analysis by capillary gas chromatography. In comparison to Tenax TA, the electrospun nanofibers displayed a significant advantage in desorption efficiency and adsorption selectivity. Stability studies were conducted as a comparative experiment between PS-AR nanofibers and Tenax TA using toluene as the model compound. No stability problems were observed upon storage of toluene on both PS-AR nanofibers and Tenax TA over 60 hours period when maintained in an ultra-freezer (-80°C). The nanofibers provided slightly better stability for the adsorbed analytes than Tenax TA under other storage conditions. In addition, the nanofibers also provided slightly better precision than Tenax TA. The quantitative adsorption of PS-AR nanofibers exhibited a good linearity, as evidenced by the 0.988-0.999 range of regression coefficients (R). These results suggest that for VOCs sampling the electrospun nanofibers can be a potential ideal adsorbent.
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Tan P, Wen J, Hu Y, Tan X. Adsorption of Cu2+and Cd2+from aqueous solution by novel electrospun poly(vinyl alcohol)/graphene oxide nanofibers. RSC Adv 2016. [DOI: 10.1039/c6ra18052c] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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