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Grazioso T, Javanmardi H, Pawliszyn J. Sequential thin film microextraction and overcoated thin film microextraction devices for characterization of sparkling wine aroma profiles and partitioning equilibria. Food Chem 2024; 458:140225. [PMID: 38970951 DOI: 10.1016/j.foodchem.2024.140225] [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: 02/06/2024] [Revised: 06/18/2024] [Accepted: 06/23/2024] [Indexed: 07/08/2024]
Abstract
Solid Phase Microextraction (SPME) is a commonly used, robust method for characterization of aroma profiles in food matrices. However, challenges such as saturation, swelling, and competition can occur when sampling such complex matrices, resulting in decreased accuracy in the quantitation of polar compounds. In this study, sequential thin film micro-extraction (TFME) was employed to study the aroma profile of sparkling wine, with a focus to evaluate the displacement of polar analytes at extraction times longer than their corresponding equilibrium time. This investigation also describes advancements in the production of TFME devices, specifically the overcoating of hydrophilic-lipophilic balance/polydimethylsiloxane (HLB/PDMS) thin films to increase their matrix compatibility. Sequential thin film micro-extraction and overcoated HLB/PDMS thin films were evaluated for characterization of sparkling wine samples. The results were encouraging, showing that these advancements can decrease competition phenomena and increase the calibration linearity range compared to traditional micro-extraction approaches more commonly used for the characterization of such samples. In addition, multiphase equilibria investigation involving micellar systems enabled by the microextraction technology provides better understanding between wine aroma and its composition.
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Affiliation(s)
- Tommaso Grazioso
- Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Hasan Javanmardi
- Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Janusz Pawliszyn
- Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
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Martin DE, Muselet D, Kanso H, Alnajjar P, Mexler J, Le Roux Y, Pak LT, Richard A, Charlier JB, Saaidi PL. Analysis of chlordecone and its transformation products in environmental waters by a new SPME-GC-MS method and comparison with LLE-GC-MS/MS and LLE-LC-MS/MS: A case study in the French West Indies. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 948:174610. [PMID: 38997033 DOI: 10.1016/j.scitotenv.2024.174610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 07/03/2024] [Accepted: 07/06/2024] [Indexed: 07/14/2024]
Abstract
Among the numerous organochlorines (OCs) applied in the French West Indies (FWI), chlordecone (hydrated form C10Cl10O2H2; CLD) still causes major environmental pollution nowadays. A recent report revealed the unexpected presence in FWI environment of transformation products (TPs) of CLD not routinely monitored due to a lack of commercial standards. Here, we present a method for surface waters and groundwaters to analyze CLD, its main TPs (hydroCLDs, chlordecol (CLDOH), 10-monohydroCLDOH and polychloroindenes) and other OCs. We developed an SPME-GC-SIM/MS method with a PDMS-DVB fiber. Since CLDOH-d commonly used as internal standard (IS) proved unsuitable, we synthesized several IS candidates, and finally identified 10-monohydro-5-methyl-chlordecol as a satisfactory IS for CLDOH and 10-monohydroCLDOH avoiding the use of 13C-labelled analogue. LODs for CLD and its TPs varied from 0.3 to 10 ng/L, equal to or below LODs of the two laboratories, BRGM (the French geological survey) and LDA26 (one of the French Departmental Analytical Laboratories), requested in FWI pollution monitoring that used liquid-liquid extractions and advanced facilities (LLE-GC-MS/MS and LLE-LC-MS/MS methods, respectively). Then, we extended the multi-residue method to 30 OCs (CLD and its TPs, mirex, β-HCH, lindane, dieldrin, aldrin, HCB, hexachlorobutadiene, TCE, PCE) and applied it to 30 surface and ground waters from FWI. While CLD, 8- and 10-monohydroCLD, CLDOH, 10-monohydroCLDOH, dieldrin, and β-HCH were detected and quantified, pentachloroindene, another CLD TP, was sporadically found in trace levels. A comparison with BRGM and LDA26 confirmed the interest of the SPME method. Results suggested an underestimation of CLDOH and an overestimation of high CLD concentrations with one of the currently used routine protocol. In light of these findings, previous temporal monitoring of environmental waters in FWI were re-examined and revealed some atypical values, which may indeed be due to analytical bias. These discrepancies call for intensified efforts to reliably quantify CLD and its TPs.
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Affiliation(s)
- Déborah E Martin
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, Univ Evry, Université Paris-Saclay, Evry, France
| | - Delphine Muselet
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, Univ Evry, Université Paris-Saclay, Evry, France
| | - Hussein Kanso
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, Univ Evry, Université Paris-Saclay, Evry, France
| | - Perla Alnajjar
- Laboratoire Animal et Agroécosystèmes (L2A), Université de Lorraine, INRAE, 54500 Nancy, France; Ecole doctorale en Sciences et Technologie, Université Libanaise, Tripoli, Lebanon
| | - Juliette Mexler
- BRGM, Univ. Montpellier, Montpellier, France; G-eau, INRAE, CIRAD, IRD, AgroParisTech, Institut Agro, BRGM, Montpellier, France
| | - Yves Le Roux
- Laboratoire Animal et Agroécosystèmes (L2A), Université de Lorraine, INRAE, 54500 Nancy, France; Université de Lorraine, ENSAIA, Chaire Industrielle Agrométha, 54505 Vandœuvre-lès-Nancy, France
| | - Lai Ting Pak
- CIRAD, UPR HortSys, F-97285 Le Lamentin, Martinique, France; HortSys, Univ Montpellier, CIRAD, Montpellier, France
| | - Antoine Richard
- INRAE, UR 1321 ASTRO, F-97170 Petit-Bourg, Guadeloupe, France
| | - Jean-Baptiste Charlier
- BRGM, Univ. Montpellier, Montpellier, France; G-eau, INRAE, CIRAD, IRD, AgroParisTech, Institut Agro, BRGM, Montpellier, France.
| | - Pierre-Loïc Saaidi
- Génomique Métabolique, Genoscope, Institut François Jacob, CEA, Univ Evry, Université Paris-Saclay, Evry, France.
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Wieczorek MN, Zhou W, Jeleń HH, Pawliszyn J. Automated sequential SPME addressing the displacement effect in food samples. Food Chem 2024; 439:138093. [PMID: 38043285 DOI: 10.1016/j.foodchem.2023.138093] [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: 08/11/2023] [Revised: 11/22/2023] [Accepted: 11/25/2023] [Indexed: 12/05/2023]
Abstract
The displacement effect can be an issue for the quantitation of analytes with low affinity towards the extraction phase in solid-phase microextraction (SPME) for food samples that have low level of binding matrix or high level of hydrophobic compounds. In this communication, automated sequential SPME-GC-MS strategy was developed for addressing the displacement issue. The SPME thin film with PDMS coating was firstly used for the extraction of hydrophobic components in the sample which cause displacement and then SPME fiber with DVB/CAR/PDMS coating was applied in the second step for the extraction of the remain compounds. This new strategy was investigated by using 10 key food odorants as target analytes and tested in commercial beer samples. The results suggested that sequential SPME can decrease the displacement effect and improve the extraction efficiency for polar analytes.
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Affiliation(s)
- Martyna N Wieczorek
- Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Poznań, Poland
| | - Wei Zhou
- Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Henryk H Jeleń
- Faculty of Food Science and Nutrition, Poznań University of Life Sciences, Poznań, Poland
| | - Janusz Pawliszyn
- Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
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Elia S, Stylianou M, Agapiou A. Advanced micro-extraction techniques (SPME, HiSorb) for the determination of goat cheese whey wastewater VOCs. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 351:119934. [PMID: 38176384 DOI: 10.1016/j.jenvman.2023.119934] [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: 09/05/2023] [Revised: 11/28/2023] [Accepted: 12/23/2023] [Indexed: 01/06/2024]
Abstract
HiSorb and solid-phase microextraction (SPME), two environmentally friendly micro-extraction techniques based on the same fundamental principles, were evaluated for their extraction efficiency of volatile organic compounds (VOCs) from goat cheese whey wastewater. For this purpose, a sample preparation method based on the headspace-HiSorb technique was developed and evaluated for its efficiency in terms of the amount of extracted compounds and reproducibility of results. Thermal desorption-gas chromatography/mass spectrometry (TD-GC/MS) and GC/MS analytical methods were used to perform the wastewater analysis, respectively. The experimental parameters of HiSorb were evaluated in terms of probe coating, extraction time, stirring speed, sample volume, extraction temperature and salt addition. Under optimal extraction conditions, it was observed that the use of the divinylbenzene/carbon wide range/polydimethylsiloxane (DVB/CWR/PDMS) triple coating for HiSorb and DVB/Carboxen (CAR)/PDMS for SPME, was best suited to extract a broader range of VOCs with higher peak intensities. A total of 34 VOCs were extracted and determined with the DVB/CWR/PDMS HiSorb probe, while only 23 VOCs were determined with the conventional DVB/CAR/PDMS SPME fiber. The DVB/CWR/PDMS HiSorb probe has a higher adsorbent capacity which results in a higher sensitivity for VOCs compared to the DVB/CAR/PDMS SPME fiber. Furthermore, the HiSorb technique exhibits better reproducibility, as indicated by the lower relative standard deviation (RSD) of 3.7% compared to 7.1% for SPME. Therefore, the HiSorb technique is an effective method for detecting VOCs in complex matrices, such as wastewater.
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Affiliation(s)
- Soteria Elia
- Department of Chemistry, University of Cyprus, P.O. Box 20537, Nicosia, 1678, Cyprus
| | - Marinos Stylianou
- Laboratory of Chemical Engineering and Engineering Sustainability, Faculty of Pure and Applied Sciences, Open University of Cyprus, Giannou Kranitiodi 89, 2231, Latsia, Nicosia, Cyprus
| | - Agapios Agapiou
- Department of Chemistry, University of Cyprus, P.O. Box 20537, Nicosia, 1678, Cyprus.
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Justen PT, Kilpatrick ML, Soto JL, Richardson SD. Low Parts Per Trillion Detection of Iodinated Disinfection Byproducts in Drinking Water and Urine using Vacuum-Assisted Sorbent Extraction and GC-MS/MS. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:1321-1328. [PMID: 38159052 DOI: 10.1021/acs.est.3c07097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Disinfection byproducts (DBPs) are ubiquitous environmental contaminants, which are present in virtually all drinking water and linked to detrimental health effects. Iodinated-DBPs are more cytotoxic and genotoxic than chloro- and bromo-DBPs and are formed during disinfection of iodide-containing source water. Liquid-liquid extraction (LLE) paired with gas chromatography (GC)-mass spectrometry (MS) has been the method of choice in the study of low molecular weight iodinated-DBPs; however, this method is laborious and time-consuming and struggles with complex matrices. We developed an environmentally friendly method utilizing headspace solid phase extraction with the application of vacuum to measure six iodinated-trihalomethanes (I-THMs) in drinking water and urine. Vacuum-assisted sorbent extraction (VASE) has the ability to exhaustively and rapidly extract volatile and semivolatile compounds from liquid matrices without the use of solvent. Using VASE with GC-MS/MS provides improved analyte recovery and reduced matrix interference compared to LLE. Additionally, VASE enables extraction of 30 samples simultaneously with minimal sample handling and improved method reproducibility. Using VASE with GC-MS/MS, we achieved quantification limits of 3-4 ng/L. This technique was demonstrated on drinking water from four cities, where five I-THMs were quantified at levels 10-33 times below comparable LLE methods with 10 times lower volumes of sample (10 mL vs 100 mL).
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Affiliation(s)
- Patrick T Justen
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Madison L Kilpatrick
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Joshua L Soto
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Susan D Richardson
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
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Williams ML, Olomukoro AA, Emmons RV, Godage NH, Gionfriddo E. Matrix effects demystified: Strategies for resolving challenges in analytical separations of complex samples. J Sep Sci 2023; 46:e2300571. [PMID: 37897324 DOI: 10.1002/jssc.202300571] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2023] [Revised: 09/22/2023] [Accepted: 09/29/2023] [Indexed: 10/30/2023]
Abstract
Matrix effects can significantly impede the accuracy, sensitivity, and reliability of separation techniques presenting a formidable challenge to the analytical process. It is crucial to address matrix effects to achieve accurate and precise measurements in complex matrices. The multifaceted nature of matrix effects which can be influenced by factors such as target analyte, sample preparation protocol, composition, and choice of instrument necessitates a pragmatic approach when analyzing complex matrices. This review aims to highlight common challenges associated with matrix effects throughout the entire analytical process with emphasis on gas chromatography-mass spectrometry, liquid chromatography-mass spectrometry, and sample preparation techniques. These techniques are susceptible to matrix effects that could lead to ion suppression/enhancement or impact the analyte signal at various stages of the analytical workflow. The assessment, quantification, and mitigation of matrix effects are necessary in developing any analytical method. Strategies can be implemented to reduce or eliminate the matrix effect by changing the type of ionization, improving extraction and clean-up methods, optimization of chromatography conditions, and corrective calibration methods. While development of an effective strategy to completely mitigate matrix effects remains elusive, an integrated approach that combines sample preparation, analytical extraction, and effective instrumental analysis remains the most promising avenue for identifying and resolving matrix effects.
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Affiliation(s)
- Madison L Williams
- Department of Chemistry and Biochemistry, The University of Toledo, Toledo, Ohio, USA
- Dr. Nina McClelland Laboratory for Water Chemistry and Environmental Analysis, The University of Toledo, Toledo, Ohio, USA
| | - Aghogho Abigail Olomukoro
- Department of Chemistry and Biochemistry, The University of Toledo, Toledo, Ohio, USA
- Dr. Nina McClelland Laboratory for Water Chemistry and Environmental Analysis, The University of Toledo, Toledo, Ohio, USA
| | - Ronald V Emmons
- Department of Chemistry and Biochemistry, The University of Toledo, Toledo, Ohio, USA
- Dr. Nina McClelland Laboratory for Water Chemistry and Environmental Analysis, The University of Toledo, Toledo, Ohio, USA
| | - Nipunika H Godage
- Department of Chemistry and Biochemistry, The University of Toledo, Toledo, Ohio, USA
- Dr. Nina McClelland Laboratory for Water Chemistry and Environmental Analysis, The University of Toledo, Toledo, Ohio, USA
| | - Emanuela Gionfriddo
- Department of Chemistry and Biochemistry, The University of Toledo, Toledo, Ohio, USA
- Dr. Nina McClelland Laboratory for Water Chemistry and Environmental Analysis, The University of Toledo, Toledo, Ohio, USA
- School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio, USA
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7
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Zeger VR, Bell DS, Anderson JL. Understanding the influence of polymeric ionic liquid sorbent coating substituents on cannabinoid and pesticide affinity in solid-phase microextraction. J Chromatogr A 2023; 1706:464222. [PMID: 37523907 DOI: 10.1016/j.chroma.2023.464222] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 07/04/2023] [Accepted: 07/18/2023] [Indexed: 08/02/2023]
Abstract
To understand factors that drive pesticide-cannabinoid selectivity in solid-phase microextraction (SPME), eight new polymeric ionic liquid (PIL) sorbent coatings were designed and compared to four previously reported PIL sorbent coatings for the extraction of pesticides. The four PIL sorbent coatings consisted of either vinylimidazolium or vinylbenzylimidazolium ILs with long alkyl chain substituents (i.e., -C8H17 or -C12H25) and bis[(trifluoromethyl)sulfonyl]imide ([NTf2-]) anions, from which the eight new PIL sorbent coatings were adapted. Modifications to the chemical structure of IL monomers and crosslinkers included incorporation of polymerizable p-styrenesulfonate or 3-sulfopropyl acrylate anions, the addition of aromatic moieties, and/or the addition of polar functional groups (i.e., -OH or -O- groups). A total of ten commonly regulated pesticides and six cannabinoids were examined in this study. The effect of salt on the solubility of pesticides and cannabinoids in aqueous solutions was assessed by determining their extraction efficiencies in the presence of varied methanol content. Differences in their solubilities appear to play a dominant role in enhancing pesticide-cannabinoid selectivity. The selectivity, represented as the ratio of pesticide total peak areas to cannabinoid total peak areas, also exhibited a moderate correlation to the affinity of the sorbent coatings towards both the pesticides and the cannabinoids. A positive correlation was observed for the pesticides and a negative correlation was observed for the cannabinoids, suggesting that selectivity was driven by more than the presence of salt in the samples. The sorbent coatings' affinity towards each class of analytes were examined to determine specific interactions that might influence selectivity. The two main structural modifications increasing pesticide-cannabinoid selectivity included the absence of aromatic moieties and the addition of hydrogen bond donor functional groups. Extractions of simple aromatic molecules as probes were performed under similar extraction conditions as the cannabinoids and confirmed the influence of hydrogen bonding interactions on sorbent coating affinity.
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Affiliation(s)
- Victoria R Zeger
- Department of Chemistry, Iowa State University, Ames, IA 50011, United States
| | - David S Bell
- Restek Corporation, 110 Benner Circle, Bellefonte, Pennsylvania 16823, United States
| | - Jared L Anderson
- Department of Chemistry, Iowa State University, Ames, IA 50011, United States.
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Yucel U, Tonyali B, Smith JS. Interaction of 2-dodecylcyclobutanone (2-DCB) and internal standard in irradiated chicken jerkies and pig ears in solid-phase microextraction (SPME)-coupled gas chromatography-mass spectrometry (GC-MS) analysis. Food Chem 2023; 421:136109. [PMID: 37087992 DOI: 10.1016/j.foodchem.2023.136109] [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: 03/09/2022] [Revised: 03/29/2023] [Accepted: 04/03/2023] [Indexed: 05/03/2023]
Abstract
The radiolysis of palmitic acid in chicken jerky (CJ) and pig ears (PE) can form 2-dodecylcyclobutanone (2-DCB). A solid-phase micro extraction-coupled GC-MS technique can be used for quantitative analysis of 2-DCB with the adequate use of an internal standard (IS). The objectives of this study are to: 1) investigate the IS and 2-DCB interactions as a function of IS concentration and irradiation dose; 2) elucidate the effects of bound 2-DCB; 3) use electron paramagnetic resonance spectroscopy to complement 2-DCB measurements. The measurement of 2-DCB formed by irradiation was significantly (P < 0.05) affected by the palmitic acid content and IS concentration. The amount of 2-DCB measured in irradiated (10 kGy) CJ and PE increased 70% and 300%, respectively, when the IS concentration increased from 8 to 800 ppb. Our findings serve as a guide for the adequate use of IS for quantitative analysis of 2-DCB formed in irradiated meat matrixes.
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Affiliation(s)
- Umut Yucel
- Animal Sciences and Industry Department, Food Science Institute, Kansas State University, Manhattan, KS 66506, United States.
| | - Bade Tonyali
- Animal Sciences and Industry Department, Food Science Institute, Kansas State University, Manhattan, KS 66506, United States
| | - J Scott Smith
- Animal Sciences and Industry Department, Food Science Institute, Kansas State University, Manhattan, KS 66506, United States
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Wieczorek MN, Zhou W, Pawliszyn J. Sequential thin film-solid phase microextraction as a new strategy for addressing displacement and saturation effects in food analysis. Food Chem 2022; 389:133038. [PMID: 35483299 DOI: 10.1016/j.foodchem.2022.133038] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 03/07/2022] [Accepted: 04/19/2022] [Indexed: 11/17/2022]
Abstract
Solid-phase microextraction (SPME) is robust, selective, sensitive, and can be automated. However, low extraction phase to sample volume ratio sometimes results in saturation, competition, or swelling phenomena in complex samples. A sequential extraction method using two thin-film SPME (TF-SPME) devices with different selectivities was developed. The sequential application of the thin films provided higher extraction capacities, while avoiding swelling, saturation, and displacement effects, and enabled the quantitative determination of all compounds in the analyzed samples, independent of their polarity and affinity to extraction phases. In the first step, a TF-SPME device with a poly(dimethylsiloxane) (PDMS) coating was used to deplete non-polar and other compounds present at high concentrations in the sample, which are typically associated with the undesirable phenomena. In the second step, a TF-SPME device coated with a combination of hydrophobic/lipophilic balanced (HLB) particles and PDMS (HLB/PDMS) was applied for the direct microextraction of the remaining compounds, including polar compounds left over after the first step. The proposed method resulted in decreased levels of interference and yielded encouraging analytical data for beer samples.
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Affiliation(s)
- Martyna N Wieczorek
- Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Wei Zhou
- Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada
| | - Janusz Pawliszyn
- Department of Chemistry, University of Waterloo, Waterloo, ON N2L 3G1, Canada.
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Delbecque N, Mascrez S, Psillakis E, Purcaro G. Sub-ambient temperature sampling of fish volatiles using vacuum-assisted headspace solid phase microextraction: Theoretical considerations and proof of concept. Anal Chim Acta 2022; 1192:339365. [DOI: 10.1016/j.aca.2021.339365] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 11/29/2021] [Accepted: 12/07/2021] [Indexed: 11/01/2022]
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Pua A, Huang Y, Goh RMV, Ee KH, Tan LP, Cornuz M, Liu SQ, Lassabliere B, Yu B. Combination of solid phase microextraction and low energy electron ionisation gas chromatography-quadrupole time-of-flight mass spectrometry to meet the challenges of flavour analysis. Talanta 2021; 235:122793. [PMID: 34517651 DOI: 10.1016/j.talanta.2021.122793] [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: 06/17/2021] [Revised: 08/05/2021] [Accepted: 08/05/2021] [Indexed: 10/20/2022]
Abstract
The flavour analysis of volatile compounds remains challenging not only because of their diversity in properties and dynamic range, but also due to the high background noise from food matrix constituents. To improve sensitivity and specificity for a multiclass range of compounds, a combination of solid phase micro-extraction (SPME) devices and low energy electron ionisation (LE-EI) was proposed for the analysis of 36 volatile compounds, using coffee as a model matrix. From a pre-evaluation of devices and extraction modes, the combined use of direct immersion-stir bar sorptive extraction and headspace-thin-film SPME (SBSE-TFSPME) was selected to increase compound recovery, and further optimised for extraction temperature (88 °C) and time (110 min). Furthermore, to complement sample preparation by improving method specificity, a LE-EI technique was developed by evaluating the effect of ionisation energy, source temperature, and emission current on the formation of the diagnostic molecular ions and their preservation. This LE-EI method (15 eV, 150 °C, 0.3 μA) was validated with SBSE-TFSPME as a complete workflow in coffee matrices, and was found to possess good repeatability (intra-day RSD: 1.6-7.3 %), intermediate precision (inter-day RSD: 4.1-12.2 %), and linearity (R2 > 0.98). Even for complex coffee samples, the method detection limit reached the pg/mL range (e.g. 2,4,5-trimethylthiazole was detected at 15 pg/mL). In conclusion, this study provided insights on the potential of SPME and LE-EI to improve the sensitivity and specificity of analysis for a range of volatile compounds from food and other complex matrices.
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Affiliation(s)
- Aileen Pua
- Mane SEA Pte Ltd, 3 Biopolis Drive, #07-17/18/19 Synapse, Singapore 138623; Department of Food Science and Technology, National University of Singapore, S14 Level 5, Science Drive 2, Singapore 117542
| | - Yunle Huang
- Mane SEA Pte Ltd, 3 Biopolis Drive, #07-17/18/19 Synapse, Singapore 138623; Department of Food Science and Technology, National University of Singapore, S14 Level 5, Science Drive 2, Singapore 117542
| | - Rui Min Vivian Goh
- Department of Food Science and Technology, National University of Singapore, S14 Level 5, Science Drive 2, Singapore 117542
| | - Kim-Huey Ee
- Mane SEA Pte Ltd, 3 Biopolis Drive, #07-17/18/19 Synapse, Singapore 138623
| | - Lay Peng Tan
- Agilent Technologies Singapore (Sales) Pte Ltd, 1 Yishun Avenue 7, Singapore 768923
| | - Maurin Cornuz
- Mane SEA Pte Ltd, 3 Biopolis Drive, #07-17/18/19 Synapse, Singapore 138623
| | - Shao Quan Liu
- Department of Food Science and Technology, National University of Singapore, S14 Level 5, Science Drive 2, Singapore 117542.
| | | | - Bin Yu
- Mane SEA Pte Ltd, 3 Biopolis Drive, #07-17/18/19 Synapse, Singapore 138623.
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Jackson S, Badu-Tawiah AK. Enhanced thread spray mass spectrometry: a general method for direct pesticide analysis in various complex matrices. Analyst 2021; 146:5592-5600. [PMID: 34369487 DOI: 10.1039/d1an00651g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Determination of pesticide residues in a wide variety of matrices is an ongoing challenge due to low concentration and substantial amounts of interfering endogenous compounds that can be coextracted with the analytes. Herein, we describe the use of cellulose thread both as a suitable sampling medium for various matrices and as a direct analysis platform through an improved thread spray mass spectrometry (MS) approach. Enhanced extraction and the subsequent generation of tiny nanodroplets, after the application of DC potential to the wet thread, enabled ultra-sensitive detection of pesticides without prior sample treatment. This methodology was applied to quantify glyphosate and its metabolite, aminomethylphosphonic acid, in surface water at 12.2 μg mL-1 limit of detection (LOD) via standard addition calibration. The method was also used for an internal standard calibration for the analysis of atrazine, which resulted in a LOD of 0.74 ng mL-1. The enhanced thread spray MS platform also proved effective when applied for direct analysis of diphenylamine and thiabendazole, which enabled the evaluation of post-harvest pesticide treatment of fruits (surface and interior) without complete destruction of the fruits.
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Affiliation(s)
- Sierra Jackson
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210, USA.
| | - Abraham K Badu-Tawiah
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, OH 43210, USA.
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Lenti L, Scortichini S, Pacetti D, Cespi M, Fiorini D. Polydimethylsiloxane/divinylbenzene overcoated fiber and its application to extract and analyse wine volatile compounds by solid-phase microextraction and gas chromatography coupled to mass spectrometry: direct immersion, headspace or both? Food Res Int 2021; 148:110632. [PMID: 34507775 DOI: 10.1016/j.foodres.2021.110632] [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: 05/03/2021] [Revised: 07/23/2021] [Accepted: 07/27/2021] [Indexed: 11/26/2022]
Abstract
In this study, a comparison of the efficiency of the commercially available polydimethylsiloxane/divinylbenzene (PDMS/DVB) overcoated (OC) fiber used in direct immersion (DI) or in headspace (HS), has been performed by extracting volatiles through solid-phase microextraction (SPME) from a red wine and from a wine model to confirm the results. It was also investigated if a combination of DI followed by HS in a single assay (DI-HS) can provide improvements as compared to the use in DI or in HS only. Furthermore, the use of OC fiber in HS mode was compared with the use of the triphasic phase (TP, in PDMS/CAR/DVB), known to provide good results in this application. To have information also on fiber specificity, the detected analytes were subdivided into three classes depending on their boiling point. Results show that: OC fiber gives slightly better performance as compared to TP fiber, demonstrating a high efficiency of the OC fiber also in HS mode. Then, comparing the use of the commercial OC fiber in HS, DI and in the combined DI-HS mode, explored for the first time in this study to extract volatiles from wine, the combination DI-HS resulted to provide a more balanced efficiency for all the three groups of analytes, thus being a good compromise when the analytes have a broad range of volatility. Principal component analysis (PCA) and the design of experiment (DoE) were exploited to plan experiments and to help interpreting the results, highlighting that the combined DI-HS approach can be successfully applied to the characterization of wines and of other matrices, where analytes of interest have a wide range of volatility.
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Affiliation(s)
- Lucia Lenti
- School of Science and Technology, Chemistry Division, University of Camerino, Via S. Agostino 1, I-62032 Camerino, MC, Italy
| | - Serena Scortichini
- School of Science and Technology, Chemistry Division, University of Camerino, Via S. Agostino 1, I-62032 Camerino, MC, Italy
| | - Deborah Pacetti
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, AN, Italy
| | - Marco Cespi
- School of Pharmacy, University of Camerino, Via S. Agostino 1, I-62032 Camerino, MC, Italy.
| | - Dennis Fiorini
- School of Science and Technology, Chemistry Division, University of Camerino, Via S. Agostino 1, I-62032 Camerino, MC, Italy.
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15
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Godage NH, Olomukoro AA, Emmons RV, Gionfriddo E. In vivo analytical techniques facilitated by contemporary materials. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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16
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Zhu W, Qin P, Han L, Zhang X, Li D, Li M, Wang Y, Zhang X, Lu M, Cai Z. Gas-cycle-assisted headspace solid-phase microextraction coupled with gas chromatography for rapid analysis of organic pollutants. Chem Commun (Camb) 2021; 57:8810-8813. [PMID: 34382969 DOI: 10.1039/d1cc02771a] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, a new gas-cycle-assisted (GCA) headspace solid-phase microextraction (HS-SPME) device was designed to rapidly extract organic pollutants with high Kow and boiling points, which have difficulty in volatilization from matrix to headspace. Organic pollutants, including three polycyclic aromatic hydrocarbons (PAHs), four polychlorinated biphenyls (PCBs), and five phthalate esters (PAEs), were selected to evaluate the performance of GCA HS-SPME. Compared with conventional HS-SPME, the equilibrium times of GCA HS-SPME for extraction of PAHs, PCBs, and PAEs were greatly shortened from 70-90 to 5-11 min. Moreover, the limits of detection for analysis of PAHs were achieved at pg mL-1 level by GCA HS-SPME coupled with gas chromatography-flame ionization detection.
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Affiliation(s)
- Wenli Zhu
- Henan International Joint Laboratory of Medicinal Plants Utilization, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, Henan, China.
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17
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Ultra-high-performance liquid chromatography high-resolution mass spectrometry variants for metabolomics research. Nat Methods 2021; 18:733-746. [PMID: 33972782 DOI: 10.1038/s41592-021-01116-4] [Citation(s) in RCA: 129] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 03/12/2021] [Indexed: 02/03/2023]
Abstract
Ultra-high-performance liquid chromatography high-resolution mass spectrometry (UHPLC-HRMS) variants currently represent the best tools to tackle the challenges of complexity and lack of comprehensive coverage of the metabolome. UHPLC offers flexible and efficient separation coupled with high-sensitivity detection via HRMS, allowing for the detection and identification of a broad range of metabolites. Here we discuss current common strategies for UHPLC-HRMS-based metabolomics, with a focus on expanding metabolome coverage.
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18
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Paiva AC, Crucello J, de Aguiar Porto N, Hantao LW. Fundamentals of and recent advances in sorbent-based headspace extractions. Trends Analyt Chem 2021. [DOI: 10.1016/j.trac.2021.116252] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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19
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Abstract
Solid phase microextraction (SPME) is one of the most popular sample preparation methods which can be applied to organic compounds allowing the simultaneous extraction and pre-concentration of analytes from the sample matrix. It is based on the partitioning of the analyte between the extracting phase, generally immobilized on a fiber substrate, and the matrix (water, air, etc.), and has numerous advantages such as rapidity, simplicity, low cost, ease of use and automation, and absence of toxic solvents. Fiber SPME has been widely used in combination with various analytical instrumentation even if most of the work has been done coupling the extraction technique with gas and liquid chromatography (GC and LC). This manuscript presents an overview of the recent works (from 2010 to date) of solid phase microextraction coupled to liquid chromatography (SPME-LC) relevant to analytical applications performed using commercially available fibers or lab-made fibers already developed in previous papers, and to improved instrumental systems and approaches.
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20
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Reyes-Garcés N, Boyacı E, Gómez-Ríos GA, Olkowicz M, Monnin C, Bojko B, Vuckovic D, Pawliszyn J. Assessment of solid phase microextraction as a sample preparation tool for untargeted analysis of brain tissue using liquid chromatography-mass spectrometry. J Chromatogr A 2021; 1638:461862. [PMID: 33433374 DOI: 10.1016/j.chroma.2020.461862] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 12/19/2020] [Accepted: 12/25/2020] [Indexed: 12/14/2022]
Abstract
This work presents an evaluation of solid-phase microextraction (SPME) SPME in combination with liquid chromatography-high resolution mass spectrometry (LC-HRMS) as an analytical approach for untargeted brain analysis. The study included a characterization of the metabolite coverage provided by C18, mixed-mode (MM, with benzene sulfonic acid and C18 functionalities), and hydrophilic lipophilic balanced (HLB) particles as sorbents in SPME coatings after extraction from cow brain homogenate at static conditions. The effects of desorption solvent, extraction time, and chromatographic modes on the metabolite features detected were investigated. Method precision and absolute matrix effects were also assessed. Among the main findings of this work, it was observed that all three tested coating chemistries were able to provide comparable brain tissue information. HLB provided higher responses for polar metabolites; however, as these fibers were prepared in-house, higher inter-fiber relative standard deviations were also observed. C18 and HLB coatings offered similar responses with respect to lipid-related features, whereas MM and C18 provided the best results in terms of method precision. Our results also showed that the use of methanol is essential for effective desorption of non-polar metabolites. Using a reversed-phase chromatographic method, an average of 800 and 1200 brain metabolite features detected in positive and negative modes, respectively, met inter-fibre RSD values below 30% (n=4) after removal of fibre and solvent artefacts from the associated datasets. For features detected using a lipidomics method, a total of 900 and 1800 features detected using C18 fibers in positive and negative mode, respectively, met the same criteria. In terms of absolute matrix effects, the majority of the model metabolites tested showed values between 80 and 120%, which are within the acceptable range. Overall, the findings of this work lay the foundation for further optimization of parameters for SPME-LC-HRMS methods suitable for in vivo and ex vivo brain (and other tissue) untargeted studies, and support the applicability of this approach for non-destructive tissue metabolomics.
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Affiliation(s)
| | - Ezel Boyacı
- Department of Chemistry, University of Waterloo, ON N2L 3G1, Canada
| | | | - Mariola Olkowicz
- Department of Chemistry, University of Waterloo, ON N2L 3G1, Canada
| | - Cian Monnin
- Department of Chemistry and Biochemistry, Concordia University, Montreal QC H4B 1R6, Canada
| | - Barbara Bojko
- Department of Chemistry, University of Waterloo, ON N2L 3G1, Canada
| | - Dajana Vuckovic
- Department of Chemistry and Biochemistry, Concordia University, Montreal QC H4B 1R6, Canada
| | - Janusz Pawliszyn
- Department of Chemistry, University of Waterloo, ON N2L 3G1, Canada.
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Gionfriddo E, Gómez-Ríos GA. Analysis of food samples made easy by microextraction technologies directly coupled to mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2021; 56:e4665. [PMID: 33098354 DOI: 10.1002/jms.4665] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 09/18/2020] [Accepted: 09/25/2020] [Indexed: 06/11/2023]
Abstract
Because of the complexity and diversity of food matrices, their chemical analysis often entails several analytical challenges to attain accurate and reliable results, especially for multiresidue analysis and ultratrace quantification. Nonetheless, microextraction technology, such as solid-phase microextraction (SPME), has revolutionized the concept of sample preparation for complex matrices because of its nonexhaustive, yet quantitative extraction approach and its amenability to coupling to multiple analytical platforms. In recent years, microextraction devices directly interfaced with mass spectrometry (MS) have redefined the analytical workflow by providing faster screening and quantitative methods for complex matrices. This review will discuss the latest developments in the field of food analysis by means of microextraction approaches directly coupled to MS. One key feature that differentiates SPME-MS approaches from other ambient MS techniques is the use of matrix compatible extraction phases that prevent biofouling, which could drastically affect the ionization process and are still capable of selective extraction of the targeted analytes from the food matrix. Furthermore, the review examines the most significant applications of SPME-MS for various ionization techniques such as direct analysis in real time, dielectric barrier desorption ionization, and some unique SPME geometries, for example, transmission mode SPME and coated blade spray, that facilitate the interface to MS instrumentation.
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Affiliation(s)
- Emanuela Gionfriddo
- Department of Chemistry and Biochemistry, College of Natural Sciences and Mathematics, The University of Toledo, Toledo, Ohio, 43606, USA
- School of Green Chemistry and Engineering, The University of Toledo, Toledo, Ohio, 43606, USA
- Dr. Nina McClelland Laboratory for Water Chemistry and Environmental Analysis, The University of Toledo, Toledo, Ohio, 43606, USA
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22
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Huang Y, Liew CSM, Goh SXL, Goh RMV, Ee KH, Pua A, Liu SQ, Lassabliere B, Yu B. Enhanced extraction using a combination of stir bar sorptive extraction and thin film-solid phase microextraction. J Chromatogr A 2020; 1633:461617. [PMID: 33096289 DOI: 10.1016/j.chroma.2020.461617] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 09/28/2020] [Accepted: 10/10/2020] [Indexed: 01/20/2023]
Abstract
Sorptive extraction techniques have experienced increased popularity, but they face limitations in dynamic range and sensitivity. In this study, a new method combining stir bar sorptive extraction (SBSE) and thin-film solid-phase microextraction (TFSPME) was developed, and optimization for extraction temperature (70 °C) and time (120 min) was carried out. Polydimethylsiloxane (PDMS)-coated SBSE and PDMS/carboxen (PDMS/CAR)-coated TFSPME were used, and both headspace and direct immersion extraction modes were also studied. Using 40 selected volatile compounds, the combined method generally gave a wider linearity range with lower minimum limits (2 to 3 orders), satisfactory coefficient of determination (R2>0.980), and improved sensitivity when compared to SBSE-only or TFSPME-only techniques. Furthermore, despite the combined use of two extraction devices, the repeatability (<13.1 %) and reproducibility (<13.4 %) of the combined method were comparable to SBSE-only or TFSPME-only results. Higher recoveries of up to 20% were also achieved by the combined method. Compared to the conventional SBSE method, the new method provided superior performance in terms of dynamic range and sensitivity for compounds of various polarities. In conclusion, this study provided insights on the suitability of the various extraction methods for compounds of different chemical properties which could aid in future applications for volatiles analysis in food, biological, and environmental sectors.
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Affiliation(s)
- Yunle Huang
- Mane SEA PTE LTD, 3 Biopolis Drive, #07-17/18/19 Synapse 138623, Singapore; Department of Food Science and Technology, National University of Singapore, S14 Level 5, Science Drive 2 117542, Singapore
| | | | | | - Rui Min Vivian Goh
- Department of Food Science and Technology, National University of Singapore, S14 Level 5, Science Drive 2 117542, Singapore
| | - Kim Huey Ee
- Mane SEA PTE LTD, 3 Biopolis Drive, #07-17/18/19 Synapse 138623, Singapore
| | - Aileen Pua
- Mane SEA PTE LTD, 3 Biopolis Drive, #07-17/18/19 Synapse 138623, Singapore; Department of Food Science and Technology, National University of Singapore, S14 Level 5, Science Drive 2 117542, Singapore
| | - Shao Quan Liu
- Department of Food Science and Technology, National University of Singapore, S14 Level 5, Science Drive 2 117542, Singapore.
| | | | - Bin Yu
- Mane SEA PTE LTD, 3 Biopolis Drive, #07-17/18/19 Synapse 138623, Singapore.
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23
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Suchana S, Passeport E. Optimization of a solid-phase microextraction technique for chloro‑ and nitro- substituted aromatic compounds using design of experiments. J Chromatogr A 2020; 1621:461083. [PMID: 32317103 DOI: 10.1016/j.chroma.2020.461083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 03/24/2020] [Accepted: 03/25/2020] [Indexed: 10/24/2022]
Abstract
A rapid and sensitive direct immersion solid-phase microextraction (SPME) technique for the analysis of seven chloro (Cl-) and nitro (NO2-) substituted anilines, toluenes, and nitrobenzenes from small volume (1.5 mL) aqueous samples was optimized for gas chromatography using Design of Experiments (DoE). Screening of the SPME factors was performed by a fractional factorial DoE, and the optimization of influential factors was achieved with a central composite multi-response surface DoE. Extraction time, pre-SPME agitation speed, extraction temperature, and desorption temperature were identified as significant factors and their values were set using a desirability function that maximized the extraction of the seven target analytes. Extraction time and agitation speed showed significant interactions for most analytes (α = 0.05). The relative standard deviations (RSDs) for within-day and between-day analyses were below 8%, suggesting that the method was repeatable and reproducible. The obtained limits of detection were in the low μg/L range (1-10) using a Flame Ionization Detector, far below what is needed for industrial contaminated sites (usually >1 mg/L). The optimized SPME method increased the analyte concentration up to 2-3 orders of magnitude compared with direct GC injection. The optimized SPME method was applied to two groundwater samples from a contaminated site in which the concentrations of three of the target analytes were ranged from 0.06 to 9.42 mg/L with RSDs <11%. When the concentrations of the target analytes in the sample matrix were higher than 0.5 mg/L, a competition for the SPME extraction sites was observed where analytes with higher affinity for the fiber material replaced the analytes with lower affinity. As a result, dilution of highly contaminated samples is recommended. This study provided for the first time an analytical method for the quantification of frequently co-occurring contaminants from the chloro‑ and nitro- substituted aniline, toluene, and nitrobenzene families.
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Affiliation(s)
- Shamsunnahar Suchana
- Department of Civil and Mineral Engineering, University of Toronto, 35 St George Street, M5S 1A4 Toronto, ON, Canada
| | - Elodie Passeport
- Department of Civil and Mineral Engineering, University of Toronto, 35 St George Street, M5S 1A4 Toronto, ON, Canada; Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, M5S 3E5 Toronto, ON, Canada.
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24
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Mascrez S, Purcaro G. Enhancement of volatile profiling using multiple-cumulative trapping solid-phase microextraction. Consideration on sample volume. Anal Chim Acta 2020; 1122:89-96. [PMID: 32503747 DOI: 10.1016/j.aca.2020.05.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 04/23/2020] [Accepted: 05/02/2020] [Indexed: 01/05/2023]
Abstract
In the present work, the performance of the multiple-cumulative trapping headspace solid-phase microextraction technique used in the headspace linearity range and saturated headspace was investigated and compared, with the ultimate goal of maximizing the fingerprinting information extractable using a cross-sample comparison algorithm for olive oil quality assessment. It was highlighted as the use of 0.1 g of olive oil provides comparable or even better profiling than 1.5 g at a little expense of sensitivity. However, the use of multiple-cumulative-solid-phase microextraction, along with the correct sample volume, improved not only the overall sensitivity but significantly burst the level of information for cross-sample studies.
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Affiliation(s)
- Steven Mascrez
- Gembloux Agro-Bio Tech, University of Liège, Gembloux, 5030, Belgium
| | - Giorgia Purcaro
- Gembloux Agro-Bio Tech, University of Liège, Gembloux, 5030, Belgium.
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25
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Horsthemke F, Leißing M, Winkler V, Friesen A, Ibing L, Winter M, Nowak S. Development of a lithium ion cell enabling in situ analyses of the electrolyte using gas chromatographic techniques. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.135894] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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26
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Rodinkov OV, Bugaichenko AS, Moskvin LN. Static Headspace Analysis and Its Current Status. JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1134/s106193482001013x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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27
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Huang B, Yan D, Fang W, Wang X, Liu J, Zhang D, Wang Q, Ouyang C, Han Q, Jin X, Cao A. Comparison of headspace solid-phase microextraction and solvent extraction method for the simultaneous analysis of various soil fumigants in soil or water by gas chromatography-mass spectrometry. J Sep Sci 2020; 43:1499-1513. [PMID: 32059263 DOI: 10.1002/jssc.201900767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 01/18/2020] [Accepted: 02/10/2020] [Indexed: 11/07/2022]
Abstract
The quantity of soil fumigants has increased globally that has focused attention on their environmental behavior. However, simultaneous analysis of traces of fumigant residues is often unreported because analysis methods are not readily available to measure them at low concentrations. In this study, typical solvent extraction methods were compared with headspace solid-phase microextraction methods. Both methods can be used for simultaneously measuring the concentrations of five commonly used soil fumigants in soil or water. The solvent extraction method showed acceptable recovery (76-103%) and intraday relative standard deviations (0.8-11%) for the five soil fumigants. The headspace solid-phase microextraction method also showed acceptable recovery (72-104%) and precision rates (1.3-17%) for the five soil fumigants. The solvent extraction method was more precise and more suitable for analyzing relatively high fumigant residue levels (0.05-5 μg/g) contained in multiple soil samples. The headspace solid-phase microextraction method, however, had a much lower limits of detection (0.09-2.52 μg/kg or μg/L) than the solvent extraction method (5.8-29.2 μg/kg), making headspace solid-phase microextraction most suitable for trace analysis of these fumigants. The results confirmed that the headspace solid-phase microextraction method was more convenient and sensitive for the determination of fumigants to real soil samples.
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Affiliation(s)
- Bin Huang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Dongdong Yan
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, P. R. China.,Beijing Innovation Consortium of Agriculture Research System, Beijing, P. R. China
| | - Wensheng Fang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Xianli Wang
- Institute for Agri-food Standards and Testing Technology, Shanghai Academy of Agricultural Science, Shanghai, P. R. China
| | - Jie Liu
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Daqi Zhang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, P. R. China
| | - Qiuxia Wang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, P. R. China.,Beijing Innovation Consortium of Agriculture Research System, Beijing, P. R. China
| | - Canbin Ouyang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, P. R. China.,Beijing Innovation Consortium of Agriculture Research System, Beijing, P. R. China
| | - Qingli Han
- College of Biodiversity Conservation, Southwest Forestry University, Kunming, P. R. China
| | - Xi Jin
- IPPCAAS-BU Joint Research Centre for Soil Remediation, Baoding University, Hebei, P. R. China
| | - Aocheng Cao
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, P. R. China.,Beijing Innovation Consortium of Agriculture Research System, Beijing, P. R. China
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28
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Oliveira WDS, Monsalve JO, Nerin C, Padula M, Godoy HT. Characterization of odorants from baby bottles by headspace solid phase microextraction coupled to gas chromatography-olfactometry-mass spectrometry. Talanta 2020; 207:120301. [DOI: 10.1016/j.talanta.2019.120301] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 08/24/2019] [Accepted: 08/26/2019] [Indexed: 01/29/2023]
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29
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Hernandes KC, Souza-Silva ÉA, Assumpção CF, Zini CA, Welke JE. Matrix-compatible solid phase microextraction coating improves quantitative analysis of volatile profile throughout brewing stages. Food Res Int 2019; 123:75-87. [DOI: 10.1016/j.foodres.2019.04.048] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 04/16/2019] [Accepted: 04/18/2019] [Indexed: 10/27/2022]
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30
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Reyes-Garcés N, Gionfriddo E. Recent developments and applications of solid phase microextraction as a sample preparation approach for mass-spectrometry-based metabolomics and lipidomics. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2019.01.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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31
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Development and validation of eco-friendly strategies based on thin film microextraction for water analysis. J Chromatogr A 2018; 1579:20-30. [DOI: 10.1016/j.chroma.2018.10.026] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Revised: 10/06/2018] [Accepted: 10/14/2018] [Indexed: 01/11/2023]
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32
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Zheng J, Huang J, Yang Q, Ni C, Xie X, Shi Y, Sun J, Zhu F, Ouyang G. Fabrications of novel solid phase microextraction fiber coatings based on new materials for high enrichment capability. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.08.021] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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33
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de Souza JRB, Kupper KC, Augusto F. In vivo investigation of the volatile metabolome of antiphytopathogenic yeast strains active against Penicillium digitatum using comprehensive two-dimensional gas chromatography and multivariate data analysis. Microchem J 2018. [DOI: 10.1016/j.microc.2018.05.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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34
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Belinato JR, Kupper KC, Augusto F. In vivo investigation of the volatile metabolome of antiphytopathogenic yeast strains active against Penicillium digitatum using comprehensive two-dimensional gas chromatography and multivariate data analysis. Microchem J 2018. [DOI: 10.1016/j.microc.2018.05.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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35
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Belinato JR, Dias FFG, Caliman JD, Augusto F, Hantao LW. Opportunities for green microextractions in comprehensive two-dimensional gas chromatography / mass spectrometry-based metabolomics - A review. Anal Chim Acta 2018; 1040:1-18. [PMID: 30327098 DOI: 10.1016/j.aca.2018.08.034] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 08/15/2018] [Accepted: 08/17/2018] [Indexed: 10/28/2022]
Abstract
Microextractions have become an attractive class of techniques for metabolomics. The most popular technique is solid-phase microextraction that revolutionized the field of modern sample preparation in the early nineties. Ever since this milestone, microextractions have taken on many principles and formats comprising droplets, fibers, membranes, needles, and blades. Sampling devices may be customized to impart exhaustive or equilibrium-based characteristics to the extraction method. Equilibrium-based approaches may rely on additional methods for calibration, such as diffusion-based or on-fiber kinetic calibration to improve bioanalysis. In addition, microextraction-based methods may enable minimally invasive sampling protocols and measure the average free concentration of analytes in heterogeneous multiphasic biological systems. On-fiber derivatization has evidenced new opportunities for targeted and untargeted analysis in metabolomics. All these advantages have highlighted the potential of microextraction techniques for in vivo and on-site sampling and sample preparation, while many opportunities are still available for laboratory protocols. In this review, we outline and discuss some of the most recent applications using microextractions techniques for comprehensive two-dimensional gas chromatography-based metabolomics, including potential research opportunities.
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Affiliation(s)
- João R Belinato
- Institute of Chemistry, University of Campinas, Campinas, SP, 13083-970, Brazil; National Institute of Science and Technology in Bioanalysis (INCTBio), Campinas, SP, 13083-970, Brazil
| | - Fernanda F G Dias
- Institute of Chemistry, University of Campinas, Campinas, SP, 13083-970, Brazil; National Institute of Science and Technology in Bioanalysis (INCTBio), Campinas, SP, 13083-970, Brazil
| | - Jaqueline D Caliman
- Institute of Chemistry, University of Campinas, Campinas, SP, 13083-970, Brazil; National Institute of Science and Technology in Bioanalysis (INCTBio), Campinas, SP, 13083-970, Brazil
| | - Fabio Augusto
- Institute of Chemistry, University of Campinas, Campinas, SP, 13083-970, Brazil; National Institute of Science and Technology in Bioanalysis (INCTBio), Campinas, SP, 13083-970, Brazil
| | - Leandro W Hantao
- Institute of Chemistry, University of Campinas, Campinas, SP, 13083-970, Brazil.
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Recent Advances in Applications of Ionic Liquids in Miniaturized Microextraction Techniques. Molecules 2018; 23:molecules23061437. [PMID: 29899277 PMCID: PMC6099658 DOI: 10.3390/molecules23061437] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 06/04/2018] [Accepted: 06/12/2018] [Indexed: 01/10/2023] Open
Abstract
Green sample preparation is one of the most challenging aspects in green analytical chemistry. In this framework, miniaturized microextraction techniques have been developed and are widely performed due to their numerous positive features such as simplicity, limited need for organic solvents, instrumentation of low cost and short time of extraction. Also, ionic liquids (ILs) have unequivocally a “green” character, which they owe to their unique properties including the re-usage, the high reaction efficiency and selectivity in room temperature, the ability to dissolve both organic and inorganic compounds, and thermal stability. In the present review, the recent advances in the application of ionic liquids in miniaturized liquid and solid phase extraction techniques as extractants, intermediate solvents, mediators and desorption solvents are discussed, quoting the advantages and drawbacks of each individual technique. Some of the most important sample preparation techniques covered include solid-phase microextraction (SPME), dispersive liquid-liquid microextraction (DLLME), single-drop microextraction (SDME), stir bar sorptive extraction (SBSE), and stir cake sorptive extraction (SCSE).
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37
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Comparison of the Conventional and Electroenhanced Direct-Immersion Solid-Phase Microextraction for Sampling of Nicotine in Biological Fluids of the Human Body. Molecules 2018; 23:molecules23051171. [PMID: 29757971 PMCID: PMC6099498 DOI: 10.3390/molecules23051171] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 04/30/2018] [Accepted: 05/09/2018] [Indexed: 12/19/2022] Open
Abstract
A stainless steel fiber was made porous and adhesive by platinization and then coated by nanostructured polypyrrole (PPy), using an appropriate electrophoretic deposition (EPD) method. The morphological surface structure and functional groups of the PPy-coated fiber were studied using SEM (Scanning electron microscope) instrument. The prepared fiber was used for comparison of direct immersion (DI) and electroenhanced direct immersion solid-phase microextraction (EE-DI-SPME) of nicotine in human plasma and urine samples followed by gas chromatography flame ionization detector (GC-FID) determination. The effects of the influential experimental parameters on the efficiency of the DI-SPME and EE-DI-SPME methods, including the pH and ionic strength of the sample solution, applied Direct current (DC) voltage, extraction temperature and time and stirring rate, were optimized. Under the optimal conditions, the calibration curves for the DI-SPME-GC-FID and EE-DI-SPME-GC-FID methods were linear over the ranges of 0.1⁻10.0 μg mL-1 and 0.001⁻10.0 μg mL-1, respectively. The relative standard deviations (RSDs, n = 6) were found to be 6.1% and 4.6% for the DI and EE strategies, respectively. The LODs (limit of detection) of the DI-SPME-GC-FID and EE-DI-SPME-GC-FID methods were found to be 10 and 0.3 ng mL-1, respectively. The relative recovery values (for the analysis of 1 µg mL-1 nicotine) were found to be 91⁻110% for EE-DI-SPME and 75⁻105% for DI-SPME. The enrichment factors for DI-SPME and EE-DI-SPME sampling were obtained as 38,734 and 50,597, respectively. The results indicated that EE-SPME was more efficient for quantitation of nicotine in biological fluids. The developed procedure was successfully carried out for the extraction and measurement of nicotine in real plasma and urine samples.
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Purcaro G, Stefanuto PH, Franchina FA, Beccaria M, Wieland-Alter WF, Wright PF, Hill JE. SPME-GC×GC-TOF MS fingerprint of virally-infected cell culture: Sample preparation optimization and data processing evaluation. Anal Chim Acta 2018; 1027:158-167. [PMID: 29866265 DOI: 10.1016/j.aca.2018.03.037] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 03/16/2018] [Accepted: 03/18/2018] [Indexed: 02/01/2023]
Abstract
Untargeted metabolomics study of volatile organic compounds produced by different cell cultures is a field that has gained increasing attention over the years. Solid-phase microextraction has been the sampling technique of choice for most of the applications mainly due to its simplicity to implement. However, a careful optimization of the analytical conditions is necessary to obtain the best performances, which are highly matrix-dependent. In this work, five different solid-phase microextraction fibers were compared for the analysis of the volatiles produced by cell culture infected with the human respiratory syncytial virus. A central composite design was applied to determine the best time-temperature combination to maximize the extraction efficiency and the salting-out effect was evaluated as well. The linearity of the optimized method, along with limits of detection and quantification and repeatability was assessed. Finally, the effect of i) different normalization techniques (i.e. z-score and probabilistic quotient normalization), ii) data transformation (i.e. in logarithmic scale), and iii) different feature selection algorithms (i.e. Fisher ratio and random forest) on the capability of discriminating between infected and not-infected cell culture was evaluated.
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Affiliation(s)
- Giorgia Purcaro
- Thayer School of Engineering, Dartmouth College, Hanover, NH, 03755, United States.
| | | | - Flavio A Franchina
- Thayer School of Engineering, Dartmouth College, Hanover, NH, 03755, United States
| | - Marco Beccaria
- Thayer School of Engineering, Dartmouth College, Hanover, NH, 03755, United States
| | | | - Peter F Wright
- Geisel School of Medicine, Dartmouth College, Hanover, NH, 03755, United States; Dartmouth-Hitchcock Medical Center, Lebanon, NH, 03756, United States
| | - Jane E Hill
- Thayer School of Engineering, Dartmouth College, Hanover, NH, 03755, United States; Geisel School of Medicine, Dartmouth College, Hanover, NH, 03755, United States
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Alam MN, Pawliszyn J. Effect of Binding Components in Complex Sample Matrices on Recovery in Direct Immersion Solid-Phase Microextraction: Friends or Foe? Anal Chem 2018; 90:2430-2433. [DOI: 10.1021/acs.analchem.7b05436] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Md. Nazmul Alam
- Department of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Janusz Pawliszyn
- Department of Chemistry, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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40
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Development of a HS-SPME-GC/MS protocol assisted by chemometric tools to study herbivore-induced volatiles in Myrcia splendens. Talanta 2017; 175:9-20. [DOI: 10.1016/j.talanta.2017.06.063] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 06/21/2017] [Accepted: 06/22/2017] [Indexed: 11/22/2022]
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41
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Reyes-Garcés N, Gionfriddo E, Gómez-Ríos GA, Alam MN, Boyacı E, Bojko B, Singh V, Grandy J, Pawliszyn J. Advances in Solid Phase Microextraction and Perspective on Future Directions. Anal Chem 2017; 90:302-360. [DOI: 10.1021/acs.analchem.7b04502] [Citation(s) in RCA: 402] [Impact Index Per Article: 57.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
| | | | | | - Md. Nazmul Alam
- Department of Chemistry, University of Waterloo, Ontario, Canada N2L 3G1
| | - Ezel Boyacı
- Department of Chemistry, Middle East Technical University, Ankara 06800, Turkey
| | - Barbara Bojko
- Department of Pharmacodynamics and Molecular Pharmacology, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, 85-067 Bydgoszcz, Poland
| | - Varoon Singh
- Department of Chemistry, University of Waterloo, Ontario, Canada N2L 3G1
| | - Jonathan Grandy
- Department of Chemistry, University of Waterloo, Ontario, Canada N2L 3G1
| | - Janusz Pawliszyn
- Department of Chemistry, University of Waterloo, Ontario, Canada N2L 3G1
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42
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Application of headspace and direct immersion solid-phase microextraction in the analysis of organothiophosphates related to the Chemical Weapons Convention from water and complex matrices. Talanta 2017; 174:295-300. [DOI: 10.1016/j.talanta.2017.05.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 05/07/2017] [Accepted: 05/10/2017] [Indexed: 11/20/2022]
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43
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Achyuthan KE, Harper JC, Manginell RP, Moorman MW. Volatile Metabolites Emission by In Vivo Microalgae-An Overlooked Opportunity? Metabolites 2017; 7:E39. [PMID: 28788107 PMCID: PMC5618324 DOI: 10.3390/metabo7030039] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 07/19/2017] [Accepted: 07/25/2017] [Indexed: 01/04/2023] Open
Abstract
Fragrances and malodors are ubiquitous in the environment, arising from natural and artificial processes, by the generation of volatile organic compounds (VOCs). Although VOCs constitute only a fraction of the metabolites produced by an organism, the detection of VOCs has a broad range of civilian, industrial, military, medical, and national security applications. The VOC metabolic profile of an organism has been referred to as its 'volatilome' (or 'volatome') and the study of volatilome/volatome is characterized as 'volatilomics', a relatively new category in the 'omics' arena. There is considerable literature on VOCs extracted destructively from microalgae for applications such as food, natural products chemistry, and biofuels. VOC emissions from living (in vivo) microalgae too are being increasingly appreciated as potential real-time indicators of the organism's state of health (SoH) along with their contributions to the environment and ecology. This review summarizes VOC emissions from in vivo microalgae; tools and techniques for the collection, storage, transport, detection, and pattern analysis of VOC emissions; linking certain VOCs to biosynthetic/metabolic pathways; and the role of VOCs in microalgae growth, infochemical activities, predator-prey interactions, and general SoH.
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Affiliation(s)
- Komandoor E Achyuthan
- Nano and Microsensors Department, Sandia National Laboratories, Albuquerque, NM 87185, USA.
| | - Jason C Harper
- Bioenergy and Defense Technology Department, Sandia National Laboratories, Albuquerque, NM 87185, USA.
| | - Ronald P Manginell
- Nano and Microsensors Department, Sandia National Laboratories, Albuquerque, NM 87185, USA.
| | - Matthew W Moorman
- Nano and Microsensors Department, Sandia National Laboratories, Albuquerque, NM 87185, USA.
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Tascon M, Gómez-Ríos GA, Reyes-Garcés N, Poole J, Boyacı E, Pawliszyn J. High-Throughput Screening and Quantitation of Target Compounds in Biofluids by Coated Blade Spray-Mass Spectrometry. Anal Chem 2017; 89:8421-8428. [PMID: 28715206 DOI: 10.1021/acs.analchem.7b01877] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Most contemporary methods of screening and quantitating controlled substances and therapeutic drugs in biofluids typically require laborious, time-consuming, and expensive analytical workflows. In recent years, our group has worked toward developing microextraction (μe)-mass spectrometry (MS) technologies that merge all of the tedious steps of the classical methods into a simple, efficient, and low-cost methodology. Unquestionably, the automation of these technologies allows for faster sample throughput, greater reproducibility, and radically reduced analysis times. Coated blade spray (CBS) is a μe technology engineered for extracting/enriching analytes of interest in complex matrices, and it can be directly coupled with MS instruments to achieve efficient screening and quantitative analysis. In this study, we introduced CBS as a technology that can be arranged to perform either rapid diagnostics (single vial) or the high-throughput (96-well plate) analysis of biofluids. Furthermore, we demonstrate that performing 96-CBS extractions at the same time allows the total analysis time to be reduced to less than 55 s per sample. Aiming to validate the versatility of CBS, substances comprising a broad range of molecular weights, moieties, protein binding, and polarities were selected. Thus, the high-throughput (HT)-CBS technology was used for the concomitant quantitation of 18 compounds (mixture of anabolics, β-2 agonists, diuretics, stimulants, narcotics, and β-blockers) spiked in human urine and plasma samples. Excellent precision (∼2.5%), accuracy (≥90%), and linearity (R2 ≥ 0.99) were attained for all the studied compounds, and the limits of quantitation (LOQs) were within the range of 0.1 to 10 ng·mL-1 for plasma and 0.25 to 10 ng·mL-1 for urine. The results reported in this paper confirm CBS's great potential for achieving subsixty-second analyses of target compounds in a broad range of fields such as those related to clinical diagnosis, food, the environment, and forensics.
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Affiliation(s)
- Marcos Tascon
- Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
| | | | - Nathaly Reyes-Garcés
- Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
| | - Justen Poole
- Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
| | - Ezel Boyacı
- Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
| | - Janusz Pawliszyn
- Department of Chemistry, University of Waterloo , Waterloo, Ontario N2L 3G1, Canada
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Dawidowicz AL, Szewczyk J, Dybowski MP. Modified headspace solid-phase microextraction for the determination of quantitative relationships between components of mixtures consisting of alcohols, esters, and ethers - impact of the vapor pressure difference of the compounds. J Sep Sci 2017; 40:2984-2991. [DOI: 10.1002/jssc.201700323] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 05/09/2017] [Accepted: 05/20/2017] [Indexed: 11/06/2022]
Affiliation(s)
| | - Joanna Szewczyk
- Faculty of Chemistry; Maria Curie Sklodowska University; Lublin Poland
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46
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Gómez-Ríos GA, Gionfriddo E, Poole J, Pawliszyn J. Ultrafast Screening and Quantitation of Pesticides in Food and Environmental Matrices by Solid-Phase Microextraction–Transmission Mode (SPME-TM) and Direct Analysis in Real Time (DART). Anal Chem 2017; 89:7240-7248. [DOI: 10.1021/acs.analchem.7b01553] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
| | | | - Justen Poole
- Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada
| | - Janusz Pawliszyn
- Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada
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47
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Trujillo-Rodríguez MJ, Pino V, Psillakis E, Anderson JL, Ayala JH, Yiantzi E, Afonso AM. Vacuum-assisted headspace-solid phase microextraction for determining volatile free fatty acids and phenols. Investigations on the effect of pressure on competitive adsorption phenomena in a multicomponent system. Anal Chim Acta 2017; 962:41-51. [DOI: 10.1016/j.aca.2017.01.056] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 01/15/2017] [Accepted: 01/24/2017] [Indexed: 12/20/2022]
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48
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Alam MN, Ricardez-Sandoval L, Pawliszyn J. Calibrant Free Sampling and Enrichment with Solid-Phase Microextraction: Computational Simulation and Experimental Verification. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.7b00131] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Md. Nazmul Alam
- Department
of Chemistry, and ‡Department of Chemical Engineering, University of Waterloo, Waterloo, N2L 3G1, Canada
| | - Luis Ricardez-Sandoval
- Department
of Chemistry, and ‡Department of Chemical Engineering, University of Waterloo, Waterloo, N2L 3G1, Canada
| | - Janusz Pawliszyn
- Department
of Chemistry, and ‡Department of Chemical Engineering, University of Waterloo, Waterloo, N2L 3G1, Canada
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Souza-Silva ÉA, Gionfriddo E, Alam MN, Pawliszyn J. Insights into the Effect of the PDMS-Layer on the Kinetics and Thermodynamics of Analyte Sorption onto the Matrix-Compatible Solid Phase Microextraction Coating. Anal Chem 2017; 89:2978-2985. [PMID: 28192963 DOI: 10.1021/acs.analchem.6b04442] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The currently presented research investigated the performance of matrix compatible PDMS-overcoated fibers (PDMS-DVB/PDMS) as compared to unmodified PDMS/DVB coatings using aqueous samples and employing a wide range of analyte polarities, molecular weights, and functionalities. In the first part of the work, a kinetic approach was taken to investigate the effect of the PDMS outer layer on the uptake rate of analytes during the mass transfer process. In short, the results can be simplified into two models: (1) the rate-limiting step is the diffusion through the coating and (2) the rate-limiting step is the diffusion through the aqueous diffusional boundary layer. For polar compounds, according to the theoretical discussion, the rate-limiting step is the diffusion through the coating; therefore, the outer PDMS layer influences the uptake rate into the matrix compatible coatings. On the other hand, for nonpolar compounds, the rate-limiting step of the uptake process is diffusion through the aqueous diffusional boundary layer; as such, the overcoated PDMS does not affect uptake rate into the matrix-compatible coatings as compared to DVB/PDMS fibers. From a thermodynamic point of view, the calculated fiber constants further corroborate the hypothesis that the additional PDMS layer does not impair the extraction phase capacity.
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Affiliation(s)
- Érica A Souza-Silva
- Department of Chemistry, University of Waterloo , Waterloo, Ontario, Canada N2L 3G1
| | - Emanuela Gionfriddo
- Department of Chemistry, University of Waterloo , Waterloo, Ontario, Canada N2L 3G1
| | - Md Nazmul Alam
- Department of Chemistry, University of Waterloo , Waterloo, Ontario, Canada N2L 3G1
| | - Janusz Pawliszyn
- Department of Chemistry, University of Waterloo , Waterloo, Ontario, Canada N2L 3G1
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50
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Souza-Silva ÉA, Pawliszyn J. Recent Advances in Solid-Phase Microextraction for Contaminant Analysis in Food Matrices. COMPREHENSIVE ANALYTICAL CHEMISTRY 2017. [DOI: 10.1016/bs.coac.2017.03.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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