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Li G, Cui Y, Yang X, Xin X, Yan H, Han D. Fabrication of molecularly imprinted carbon nanotubes integrating ionic liquids for efficient detection of perfluoroalkyl carboxylic acid in environmental water. Talanta 2024; 275:126017. [PMID: 38626499 DOI: 10.1016/j.talanta.2024.126017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 03/27/2024] [Accepted: 03/29/2024] [Indexed: 04/18/2024]
Abstract
It is extremely significant while challenging to accurately detect low-levels of perfluoroalkyl carboxylic acid compounds (PFCAs) in environmental water. Herein, adopting perfluorotetradecanoic acid as the dummy template, selective molecularly imprinted composites (CNTs@ILs@MIPs) grafted carbon nanotubes integrating hydrophilic ionic liquids were successfully prepared via surface imprinting and dummy-template imprinting techniques. The obtained CNTs@ILs@MIPs were applied as selective extraction adsorbent for specifically extract PFCAs in environmental water coupled with gas chromatography-mass spectrometry quantification. Detailed studies were conducted on the main preparation parameters and extraction conditions. The CNTs@ILs@MIPs displayed excellent adsorptivity, and the established method exhibited low LODs (0.60-1.64 ng L-1), wide linearity with R2 above 0.9994, and satisfactory adsorption recoveries (80.5-112.5%) for seven PFCAs. This proposed method provides a new applicable approach for the detection of targeted pollutants in environmental water by utilizing the high affinity and recognition ability of molecularly imprinted carbon nanotube functional materials modified with ionic liquids.
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Affiliation(s)
- Gang Li
- Hebei Key Laboratory of Public Health Safety, School of Life Sciences, College of Public Health, Hebei University, Baoding, 071002, China
| | - Yahan Cui
- Hebei Key Laboratory of Public Health Safety, School of Life Sciences, College of Public Health, Hebei University, Baoding, 071002, China
| | - Xiaonan Yang
- Hebei Key Laboratory of Public Health Safety, School of Life Sciences, College of Public Health, Hebei University, Baoding, 071002, China
| | - Xuelian Xin
- Hebei Key Laboratory of Public Health Safety, School of Life Sciences, College of Public Health, Hebei University, Baoding, 071002, China
| | - Hongyuan Yan
- Hebei Key Laboratory of Public Health Safety, School of Life Sciences, College of Public Health, Hebei University, Baoding, 071002, China; State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, College of Chemistry and Materials Science, Hebei University, Baoding, 071002, China.
| | - Dandan Han
- Hebei Key Laboratory of Public Health Safety, School of Life Sciences, College of Public Health, Hebei University, Baoding, 071002, China.
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He E, Liu N, Zhou Y, Wang Z, Lu X, Yu L. Adsorption properties and mechanism of zinc acrylic carbon nanosphere aggregates for perfluorooctanoic acid from aqueous solution. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 316:120540. [PMID: 36370977 DOI: 10.1016/j.envpol.2022.120540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2022] [Revised: 10/19/2022] [Accepted: 10/27/2022] [Indexed: 06/16/2023]
Abstract
This study found that the cross-linkable zinc acrylic nanosphere aggregates (NAs) as precursors were successfully prepared by a simple one-step synthesis route, and Zn,O dopped-carbon nanocomposites were obtained through temperature-controllable engineering, which showed excellent adsorption capacities for perfluorooctanoic acid (PFOA). A series of experiments were performed to investigate and compare carbon materials for the efficient removal of PFOA. The maximum adsorption capacities of PFOA absorbed on carbon nanospheres aggregates (CNAs) were calculated by the Langmuir (360.98 mg/g) and Sips models (309.65 mg/g). The kinetic model indicated there was chemical adsorption and physical adsorption in the adsorption process. Van der Waals force and electrostatic interactions might be the dominant mechanism of the adsorption process. Additionally, pore-filling also played a role in the adsorption process. Furthermore, the adsorption efficiency was still above 90% after five cycles. The selective adsorption ability was tested through various pollutants (metal ions and dye solutions) absorbed by the CNAs. Our results proved that carbon nanosphere aggregates (CNAs) are expected to be outstanding adsorption materials for the decontamination of PFOA from wastewater.
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Affiliation(s)
- Enhui He
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, PR China
| | - Ning Liu
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, PR China
| | - Yu Zhou
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, PR China
| | - Zheng Wang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, PR China
| | - Xiaolan Lu
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, PR China; College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, PR China
| | - Liangmin Yu
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao, 266100, PR China; Open Studio for Marine Corrosion and Protection, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266100, PR China.
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A Review on Removal and Destruction of Per- and Polyfluoroalkyl Substances (PFAS) by Novel Membranes. MEMBRANES 2022; 12:membranes12070662. [PMID: 35877866 PMCID: PMC9325267 DOI: 10.3390/membranes12070662] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 06/20/2022] [Accepted: 06/22/2022] [Indexed: 02/01/2023]
Abstract
Per- and Polyfluoroalkyl Substances (PFAS) are anthropogenic chemicals consisting of thousands of individual species. PFAS consists of a fully or partly fluorinated carbon–fluorine bond, which is hard to break and requires a high amount of energy (536 kJ/mole). Resulting from their unique hydrophobic/oleophobic nature and their chemical and mechanical stability, they are highly resistant to thermal, chemical, and biological degradation. PFAS have been used extensively worldwide since the 1940s in various products such as non-stick household items, food-packaging, cosmetics, electronics, and firefighting foams. Exposure to PFAS may lead to health issues such as hormonal imbalances, a compromised immune system, cancer, fertility disorders, and adverse effects on fetal growth and learning ability in children. To date, very few novel membrane approaches have been reported effective in removing and destroying PFAS. Therefore, this article provides a critical review of PFAS treatment and removal approaches by membrane separation systems. We discuss recently reported novel and effective membrane techniques for PFAS separation and include a detailed discussion of parameters affecting PFAS membrane separation and destruction. Moreover, an estimation of cost analysis is also included for each treatment technology. Additionally, since the PFAS treatment technology is still growing, we have incorporated several future directions for efficient PFAS treatment.
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Mann MM, Tang JD, Berger BW. Engineering human liver fatty acid binding protein for detection of poly- and perfluoroalkyl substances. Biotechnol Bioeng 2021; 119:513-522. [PMID: 34723386 DOI: 10.1002/bit.27981] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 01/09/2023]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are a large group of synthetic fluorinated chemicals with surface active and water-repellent properties. The combination of wide-spread use in numerous consumer and industrial products and extended biological half-lives arising from strong carbon-fluorine bonds has led to significant accumulation of PFAS in humans. As most human interaction with PFAS comes from ingestion, it is important to be able to detect PFAS in drinking water as well as in agricultural water. Here we present an approach to designing a fluorescence-based biosensor for the rapid detection of PFAS based on human liver fatty acid binding protein (hLFABP). Introduction of solvatochromic fluorophores within the ligand binding pocket (L50) allowed for intrinsic detection of perfluorooctanoic acid (PFOA), perfluorooctanesulfonic acid (PFOS), and perfluorohexanesulfonic acid (PFHxS) via blue-shifts in fluorescence emission spectra. Initially, a single tryptophan mutation (L50W) was found to be able to detect PFOA with a limit of detection (LOD) of 2.8 ppm. We improved the sensitivity of the biosensor by exchanging tryptophan for the thiol reactive fluorophore, acrylodan. The acrylodan conjugated C69S/F50C hLFABP variant is capable of detecting PFOA, PFOS, and PFHxS in PBS with LODs of 112 ppb, 345 ppb, and 1.09 ppm, respectively. The protein-based sensor is also capable of detecting these contaminants at similar ranges in spiked environmental water samples, including samples containing an interfering anionic surfactant sodium dodecyl sulfate. Overall, this study demonstrates engineered hLFABP is a useful platform for detection of PFAS in environmental water samples and highlights its ease of use and versatility in field applications.
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Affiliation(s)
- Madison M Mann
- Department of Chemical Engineering, University of Virginia, Charlottesville, Virginia, United States
| | - James D Tang
- Department of Chemical Engineering, University of Virginia, Charlottesville, Virginia, United States
| | - Bryan W Berger
- Department of Chemical Engineering, University of Virginia, Charlottesville, Virginia, United States
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Schieppati D, Patience NA, Campisi S, Patience GS. Experimental methods in chemical engineering: High performance liquid chromatography—HPLC. CAN J CHEM ENG 2021. [DOI: 10.1002/cjce.24050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Dalma Schieppati
- Chemical Engineering, Polytechnique Montréal Montréal Québec Canada
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