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Microextraction by packed sorbent of polycyclic aromatic hydrocarbons in brewed coffee samples with a new zwitterionic ionic liquid-modified silica sorbent. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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2
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Polycyclic Aromatic Hydrocarbons (PAHs) Sample Preparation and Analysis in Beverages: A Review. FOOD ANAL METHOD 2022. [DOI: 10.1007/s12161-021-02178-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
AbstractThe monitoring of food contaminants is of interests to both food regulatory bodies and the consumers. This literature review covers polycyclic aromatic hydrocarbons (PAHs) with regard to their background, sources of exposures, and occurrence in food and environment as well as health hazards. Furthermore, analytical methods focusing on the analysis of PAHs in tea, coffee, milk, and alcoholic samples for the last 16 years are presented. Numerous experimental methods have been developed aiming to obtain better limits of detections (LODs) and percent recoveries as well as to reduce solvent consumption and laborious work. These include information such as the selected PAHs analyzed, food matrix of PAHs, methods of extraction, cleanup procedure, LOD, limits of quantitation (LOQ), and percent recovery. For the analysis of tea, coffee, milk, and alcoholic samples, a majority of the research papers focused on the 16 US Environmental Protection Agency PAHs, while PAH4, PAH8, and methylated PAHs were also of interests. Extraction methods range from the classic Soxhlet extraction and liquid–liquid extraction to newer methods such as QuEChERS, dispersive solid-phase microextraction, and magnetic solid-phase extraction. The cleanup methods involved mainly the use of column chromatography and SPE filled with either silica or Florisil adsorbents. Gas chromatography and liquid chromatography coupled with mass spectrometry or fluorescence detectors are the main analytical instruments used. A majority of the selected combined methods used are able to achieve LODs and percent recoveries in the ranges of 0.01–5 ug/kg and 70–110%, respectively, for the analysis of tea, coffee, milk, and alcoholic samples.
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Comparative analysis of conventional and greener extraction methods and method validation for analyzing PAHs in cooked chicken and roasted coffee. Food Chem 2021; 364:130440. [PMID: 34186482 DOI: 10.1016/j.foodchem.2021.130440] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 06/14/2021] [Accepted: 06/19/2021] [Indexed: 01/10/2023]
Abstract
This study compared different extraction methods [sonication, alkaline hydrolysis, supramolecular solvent microextraction (SUPRAS) and Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS)] along with their greenness. An analytical method was validated for determination of USEPA's listed 16 polycyclic aromatic hydrocarbons' (PAHs) in cooked chicken and roasted coffee using high pressure liquid chromatography-fluorescence detector (HPLC-FLD) with a C18 column. The recoveries with QuEChERS ranged between 62.26 and 103.85% (except Naphthalene and Fluorene) and 52.63-78.69% (except Naphthalene) for chicken and coffee respectively while poor recoveries were observed with conventional methods. With SUPRAS, heavy PAHs' recovery in chicken was 71.33-112.23%. Limits of detection (LOD) were 0.03-0.06 ng/mL, regression coefficient values were 0.97-0.99 for 6.25-37.50 ng/mL quantification range. Relative standard deviation was found to be below 22%. The time and energy consumption per sample was 42.50 and 69.06 fold and 77.52 and 139.50 fold less with SUPRAS and QuEChERS method respectively as compared to alkaline hydrolysis.
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Deng W, Huang A, Zheng Q, Yu L, Li X, Hu H, Xiao Y. A density-tunable liquid-phase microextraction system based on deep eutectic solvents for the determination of polycyclic aromatic hydrocarbons in tea, medicinal herbs and liquid foods. Food Chem 2021; 352:129331. [PMID: 33652198 DOI: 10.1016/j.foodchem.2021.129331] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 01/24/2021] [Accepted: 02/07/2021] [Indexed: 12/24/2022]
Abstract
A novel density-tunable liquid-phase microextraction (DT-LPME) system was developed with high-density deep eutectic solvents (DESs) as extractant and low-density organic solvents as emulsifier and density regulator. DES-rich phase was induced to form in the bottom or in the top by adjusting the emulsifier amount. This system was used to directly extract polycyclic aromatic hydrocarbons (PAHs) from liquid and solid foods, and the obtained DES-rich phase was easy to be collected for quantification. The method (LPME with HPLC-fluorescence detector) has linearity (R2 > 0.9974), detection limits of 0.6-4.2 ng L-1 for liquid foods and 0.05-0.35 ng g-1 for solid foods, recoveries of 86.2-114.9%, and intra-day/inter-day RSDs below 6.6%. The method was applied to detect PAHs in real samples, and the PAHs residue was found in honey and five solid foods. The DT-LPME method is simple, fast, green and suitable for direct extraction of analytes from both liquid and solid samples.
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Affiliation(s)
- Wenwen Deng
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), Wuhan University School of Pharmaceutical Sciences, Wuhan 430071, China; National 111 Center for Cellular Regulation and Molecular Pharmaceutics, School of Bioengineering and Food Science, Hubei University of Technology, Wuhan, Hubei, China
| | - Anqi Huang
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), Wuhan University School of Pharmaceutical Sciences, Wuhan 430071, China
| | - Qutong Zheng
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), Wuhan University School of Pharmaceutical Sciences, Wuhan 430071, China
| | - Long Yu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), Wuhan University School of Pharmaceutical Sciences, Wuhan 430071, China
| | - Xiao Li
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), Wuhan University School of Pharmaceutical Sciences, Wuhan 430071, China
| | - Hankun Hu
- Department of Pharmacy, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China.
| | - Yuxiu Xiao
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery (Ministry of Education), Wuhan University School of Pharmaceutical Sciences, Wuhan 430071, China.
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Roudbari A, Rafiei Nazari R, Shariatifar N, Moazzen M, Abdolshahi A, Mirzamohammadi S, Madani-Tonekaboni M, Delvarianzadeh M, Arabameri M. Concentration and health risk assessment of polycyclic aromatic hydrocarbons in commercial tea and coffee samples marketed in Iran. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:4827-4839. [PMID: 32949359 DOI: 10.1007/s11356-020-10794-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 09/09/2020] [Indexed: 05/21/2023]
Abstract
The aim of the current study was to evaluate the probabilistic health risk and the concentration of 16 polycyclic aromatic hydrocarbons (PAHs) in commercial tea and coffee samples. For determining the mentioned contaminants in sixty-four samples, a reliable and sensitive technique was validated and developed. The technique is established on magnetic solid-phase extraction and gas chromatography-mass spectrometry analysis (MSPE/GC-MS). The maximum mean of ƩPAHs in coffee samples was 13.75 ± 2.90 μg kg-1, while the minimum mean ƩPAHs in tea samples was 4.77 ± 1.01 μg kg-1. The mean concentration of benzo(a)pyrene (BaP) in samples ranged from 0.64 to 2.07 μg kg-1 which was lower than that of standard levels (10 μg kg-1) established by the European Union (EU). The Monte Carlo simulation results showed that the actual target hazard quotient (THQ) for the adult and children was equal to 1.63E-04 and 1.67E-04, respectively; hence, non-carcinogenic health risk for consumers is negligible. The result of actual incremental lifetime cancer risk (ILCR) was lower than the limits of safe risk (1E-4), indicating no notable possibility of cancer risk due to the digestion of tea and coffee for children and adults. Therefore, it can be concluded that the amount of contamination of popular commercial coffee and tea available in the Iranian market with PAHs is often similar to that found in other countries and was lower than the standard of EU. Thus, the processing conditions of these products must be controlled to prevent the formation of PAHs due to the suspicion of carcinogenicity and mutation.
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Affiliation(s)
- Aliakbar Roudbari
- Center for Health Related Social and Behavioral Sciences Research, Shahroud University of Medical Sciences, Shahroud, Iran
| | | | - Nabi Shariatifar
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Mojtaba Moazzen
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Anna Abdolshahi
- Food Safety Research Center (salt), School of Nutrition and Food Sciences, Semnan University of Medical Sciences, Semnan, Iran
| | - Solmaz Mirzamohammadi
- School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
- Vice-chancellery of food and drug, Shahroud University of Medical Sciences, Shahroud, Iran
| | | | - Mehri Delvarianzadeh
- Center for Health Related Social and Behavioral Sciences Research, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Majid Arabameri
- Vice-chancellery of food and drug, Shahroud University of Medical Sciences, Shahroud, Iran.
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Binello A, Cravotto G, Menzio J, Tagliapietra S. Polycyclic aromatic hydrocarbons in coffee samples: Enquiry into processes and analytical methods. Food Chem 2020; 344:128631. [PMID: 33261994 DOI: 10.1016/j.foodchem.2020.128631] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 11/08/2020] [Accepted: 11/10/2020] [Indexed: 01/04/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are considered to be potentially genotoxic and carcinogenic in humans. These ubiquitous environmental pollutants may derive from the incomplete combustion and pyrolysis of organic matter. Coffee is an extensively consumed drink, and its PAHs contamination is not only ascribed to environmental pollution, but mainly to the roasting processes. Although no fixed limits have yet been set for residual PAHs in coffee, the present review intends to summarise and discuss the knowledge and recent advances in PAHs formation during roasting. Because coffee origin and brewing operations may affect PAHs content, we thoroughly analysed the literature on extraction and purification procedures, as well as the main analytical chromatographic methods for both coffee powders and brews. With regards to the safety of this appreciated commodity, the control on the entire production chain is desirable, because of coffee beverage could contribute to the daily human intake of PAHs.
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Affiliation(s)
- Arianna Binello
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, via P. Giuria 9, 10235 Turin, Italy.
| | - Giancarlo Cravotto
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, via P. Giuria 9, 10235 Turin, Italy.
| | - Janet Menzio
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, via P. Giuria 9, 10235 Turin, Italy.
| | - Silvia Tagliapietra
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Turin, via P. Giuria 9, 10235 Turin, Italy.
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Khani R, Ghalibafan M, Farrokhi A. Performance of metal-organic framework as an excellent sorbent for highly efficient and sensitive trace determination of anthracene in water and food samples. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:26305-26314. [PMID: 32358759 DOI: 10.1007/s11356-020-09033-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Accepted: 04/22/2020] [Indexed: 06/11/2023]
Abstract
Polycyclic aromatic hydrocarbons are a class of highly toxic and unremitting organic pollutants that are widely distributed in the natural environment. In this work, a metal-organic framework (MOF) designated as HKUST-1 [Cu3(BTC)2] was synthesized, characterized, and applied as a solid-phase extraction sorbent for the determination of a trace polycyclic aromatic hydrocarbon, anthracene (Ant) as model compound, in various real samples by spectrofluorimetry. The synthesized MOF exhibited large surface areas and high extraction ability, making it excellent candidate as sorbent for enrichment of trace anthracene. The effects of influential parameters on the performance of the dispersive micro-solid-phase extraction (Dμ-SPE) process, such as the initial anthracene concentration, pH, sorbent dosage, and shaking time, were investigated and optimized by the experiment design method. Under the optimized experimental conditions, good linearity in the range of 3-85 ng mL-1 with correlation coefficient 0.997 and good sensitivity with low detection limit 0.5 ng mL-1 for Ant was achieved. The method has been validated in the analysis of real tap water, soft drink, and vegetable juice samples with recoveries in the range of 86.33-103.00% and relative standard deviations in the range of 1.94-3.77%. The as-prepared HKUST-1 was used for at least four times without any obvious decline of extraction capability. The results of this study show the great potential of MOFs as sorbents in Dμ-SPE procedures for the separation and determination of trace Ant in complicated matrices.
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Affiliation(s)
- Rouhollah Khani
- Department of Chemistry, Faculty of Science, University of Birjand, Birjand, 97179-414, Iran.
| | - Maryam Ghalibafan
- Department of Chemistry, Faculty of Science, University of Birjand, Birjand, 97179-414, Iran
| | - Alireza Farrokhi
- Department of Chemistry, Faculty of Science, University of Birjand, Birjand, 97179-414, Iran
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Xie J, Song X, Zhang Y, Zhang M, Li X, He L. Rapid determination of nosiheptide in feed based on dispersive SPE coupled with HPLC. J Sep Sci 2018; 42:706-715. [DOI: 10.1002/jssc.201801036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 11/08/2018] [Accepted: 11/12/2018] [Indexed: 11/05/2022]
Affiliation(s)
- Jingmeng Xie
- National Reference Laboratory of Veterinary Drug Residues (SCAU), College of Veterinary MedicineSouth China Agricultural University Guangzhou China
| | - Xuqin Song
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety EvaluationSouth China Agricultural University Guangzhou China
| | - Yingxia Zhang
- National Reference Laboratory of Veterinary Drug Residues (SCAU), College of Veterinary MedicineSouth China Agricultural University Guangzhou China
| | - Meiyu Zhang
- National Reference Laboratory of Veterinary Drug Residues (SCAU), College of Veterinary MedicineSouth China Agricultural University Guangzhou China
| | - Xuezhi Li
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety EvaluationSouth China Agricultural University Guangzhou China
| | - Limin He
- National Reference Laboratory of Veterinary Drug Residues (SCAU), College of Veterinary MedicineSouth China Agricultural University Guangzhou China
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety EvaluationSouth China Agricultural University Guangzhou China
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9
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Yoshioka T, Nagatomi Y, Harayama K, Bamba T. Development of an analytical method for polycyclic aromatic hydrocarbons in coffee beverages and dark beer using novel high-sensitivity technique of supercritical fluid chromatography/mass spectrometry. J Biosci Bioeng 2018; 126:126-130. [DOI: 10.1016/j.jbiosc.2018.01.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 01/03/2018] [Accepted: 01/19/2018] [Indexed: 01/09/2023]
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10
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Okaru AO, Rullmann A, Farah A, Gonzalez de Mejia E, Stern MC, Lachenmeier DW. Comparative oesophageal cancer risk assessment of hot beverage consumption (coffee, mate and tea): the margin of exposure of PAH vs very hot temperatures. BMC Cancer 2018; 18:236. [PMID: 29490609 PMCID: PMC5831222 DOI: 10.1186/s12885-018-4060-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 01/29/2018] [Indexed: 12/03/2022] Open
Abstract
Background Consumption of very hot (> 65 °C) beverages is probably associated with increased risk of oesophageal cancer. First associations were reported for yerba mate and it was initially believed that high content of polycyclic aromatic hydrocarbons (PAH) might explain the risk. Later research on other beverage groups such as tea and coffee, which are also consumed very hot, found associations with increased risk of oesophageal cancer as well. The risk may therefore not be inherent in any compound contained in mate, but due to temperature. The aim of this study was to quantitatively assess the risk of PAH in comparison with the risk of the temperature effect using the margin of exposure (MOE) methodology. Methods The human dietary benzo[a]pyrene (BaP) and PAH4 (sum of benzo[a]pyrene, benzo[a]anthracene, chrysene, and benzo[b]fluoranthene) exposure through consumption of coffee, mate, and tea was estimated. The oesophageal cancer risk assessment for both PAH and temperature was conducted using the MOE approach. Results Considering differences in the transfer of the PAH from the leaves of mate and tea or from the ground coffee to the infusion, and considering the different preparation methods, exposures may vary considerably. The average individual exposure in μg/kg bw/day arising from consumption of 1 cup (0.2 L) of infusion was highest for mate (2.85E-04 BaP and 7.22E-04 PAH4). The average per capita exposure in μg/kg bw/day was as follows: coffee (4.21E-04 BaP, 4.15E-03 PAH4), mate (4.26E-03 BaP, 2.45E-02 PAH4), and tea (8.03E-04 BaP, 4.98E-03 PAH4). For all individual and population-based exposure scenarios, the average MOE for BaP and PAH4 was > 100,000 independent of beverage type. MOE values in this magnitude are considered as a very low risk. On the contrary, the MOE for the temperature effect was estimated as < 1 for very hot drinking temperatures, corroborating epidemiological observations about a probable oesophageal cancer risk caused by this behaviour. Conclusions The temperature effect but not PAH exposure may pose an oesophageal cancer risk. Consumer education on risks associated with consumption of ‘very hot’ beverages and policy measures to threshold serving temperatures should be discussed. Electronic supplementary material The online version of this article (10.1186/s12885-018-4060-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Alex O Okaru
- Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe, Weissenburger Strasse 3, D-76187, Karlsruhe, Germany.,Department of Pharmaceutical Chemistry, University of Nairobi, Off Ngong Road, P.O. Box 19676-00202, Nairobi, Kenya
| | - Anke Rullmann
- Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe, Weissenburger Strasse 3, D-76187, Karlsruhe, Germany
| | - Adriana Farah
- Nutrition Institute, Centre of Health Sciences, Federal University of Rio de Janeiro, Bloco J - Av. Carlos Chagas Filho 373, Ilha do Fundão, Rio de Janeiro, Brazil
| | - Elvira Gonzalez de Mejia
- Department of Food Science and Human Nutrition, Division of Nutritional Sciences, University of Illinois, 228 ERML, 1201 W. Gregory Drive, Urbana, IL, 61801, USA
| | - Mariana C Stern
- Department of Preventive Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine of USC, Los Angeles, CA, USA
| | - Dirk W Lachenmeier
- Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe, Weissenburger Strasse 3, D-76187, Karlsruhe, Germany.
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Simultaneous Determination of Seven Polycyclic Aromatic Hydrocarbons in Coffee Samples Using Effective Microwave-Assisted Extraction and Microextraction Method Followed by Gas Chromatography-Mass Spectrometry and Method Optimization Using Central Composite Design. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-017-1042-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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12
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Surma M, Sadowska-Rociek A, Cieślik E, Sznajder-Katarzyńska K. Optimization of QuEChERS sample preparation method for acrylamide level determination in coffee and coffee substitutes. Microchem J 2017. [DOI: 10.1016/j.microc.2016.11.021] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Comparing d-SPE Sorbents of the QuEChERS Extraction Method and EMR-Lipid for the Determination of Polycyclic Aromatic Hydrocarbons (PAH4) in Food of Animal and Plant Origin. FOOD ANAL METHOD 2017. [DOI: 10.1007/s12161-016-0750-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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14
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Ince M, Kaplan Ince O, Yaman M. Optimization of an Analytical Method for Determination of Pyrene in Smoked Meat Products. FOOD ANAL METHOD 2016. [DOI: 10.1007/s12161-016-0693-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Yang L, Zhang J, Zhao F, Zeng B. Electrodeposition of self-assembled poly(3,4-ethylenedioxythiophene) @gold nanoparticles on stainless steel wires for the headspace solid-phase microextraction and gas chromatographic determination of several polycyclic aromatic hydrocarbons. J Chromatogr A 2016; 1471:80-86. [PMID: 27765417 DOI: 10.1016/j.chroma.2016.10.041] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 10/12/2016] [Accepted: 10/14/2016] [Indexed: 12/24/2022]
Abstract
In this work, a novel poly(3,4-ethylenedioxythiophene)@Au nanoparticles (PEDOT@AuNPs) hybrid coating was prepared and characterized. Firstly, the monomer 3,4-ethylenedioxythiophene was self-assembled on AuNPs, and then electropolymerization was performed on a stainless steel wire by cyclic voltammetry. The obtained PEDOT@AuNPs coating was rough and showed cauliflower-like micro-structure with thickness of ∼40μm. It displayed high thermal stability (up to 330°C) and mechanical stability and could be used for at least 160 times of solid phase microextraction (SPME) without decrease of extraction performance. The coating exhibited high extraction capacity for some environmental pollutants (e.g. naphthalene, 2-methylnaphthalene, acenaphthene, fluorene and phenathrene) due to the hydrophobic interaction between the analytes and PEDOT and the additional physicochemical affinity between polycyclic aromatic hydrocarbons and AuNPs. Through coupling with GC detection, good linearity (correlation coefficients higher than 0.9894), wide linear range (0.01-100μgL-1), low limits of detection (2.5-25ngL-1) were achieved for these analytes. The reproducibility (defined as RSD) was 1.1-4.0% and 5.8-9.9% for single fiber (n=5) and fiber-to-fiber (n=5), respectively. The SPME-GC method was successfully applied for the determination of three real samples, and the recoveries for standards added were 89.9-106% for lake water, 95.7-112% for rain water and 93.2-109% for soil saturated water, respectively.
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Affiliation(s)
- Liu Yang
- Key laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Science, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Jie Zhang
- Key laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Science, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Faqiong Zhao
- Key laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Science, Wuhan University, Wuhan, Hubei 430072, PR China
| | - Baizhao Zeng
- Key laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Science, Wuhan University, Wuhan, Hubei 430072, PR China.
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Zachara A, Gałkowska D, Juszczak L. Method Validation and Determination of Polycyclic Aromatic Hydrocarbons in Vegetable Oils by HPLC-FLD. FOOD ANAL METHOD 2016. [DOI: 10.1007/s12161-016-0673-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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The perfluoroalkyl carboxylic acids (PFCAs) and perfluoroalkane sulfonates (PFSAs) contamination level in spices. Eur Food Res Technol 2016. [DOI: 10.1007/s00217-016-2744-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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18
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Sadowska-Rociek A, Cieślik E. Assessment of 3-MCPD levels in coffee and coffee substitutes by simplified QuEChERS method. J Verbrauch Lebensm 2015. [DOI: 10.1007/s00003-015-0938-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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