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Mostafa EA, Azim MA, ElZaher AA, ElKady EF, Fouad MA, Ghazy FH, Radi EA, El Makarim Saleh MA, El Kerdawy AM. Correlating physico-chemical properties of analytes with Hansen solubility parameters of solvents using machine learning algorithm for predicting suitable extraction solvent. Sci Rep 2024; 14:18741. [PMID: 39138274 PMCID: PMC11322549 DOI: 10.1038/s41598-024-68981-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 07/30/2024] [Indexed: 08/15/2024] Open
Abstract
Artificial neural networks (ANNs) are biologically inspired algorithms designed to simulate the way in which the human brain processes information. In sample preparation for bioanalysis, liquid-liquid extraction (LLE) represents an important step with the extraction solvent selection is the key laborious step. In the current work, a robust and reliable ANNs model for LLE solvent prediction was generated which could predict the suitable solvent for analyte extraction. The developed ANNs model takes a set of chosen descriptors for the cited analyte as an input and predicts the corresponding Hansen solubility parameters of the suitable extraction solvent as a model output. Then, from the solvent combination's appendix, the analyst can identify the proposed extraction solvents' combination for the cited analyte easily and efficiently. For the experimental validation of the model prediction capabilities, twenty structurally diverse drugs belonging to different pharmacological classes were extracted from human plasma. The extraction process was performed using the predicted extraction solvent combination for each drug and quantitively estimated by HPLC/UV methods to assess their extraction recovery. The developed LLE solvent prediction model is in- line with the global trend towards green chemistry since it limits the consumption of organic solvents.
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Affiliation(s)
- Eman A Mostafa
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., P.O. Box 11562, Cairo, Egypt.
| | - Mohammad Abdul Azim
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., P.O. Box 11562, Cairo, Egypt
| | - Asmaa A ElZaher
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., P.O. Box 11562, Cairo, Egypt
| | - Ehab F ElKady
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., P.O. Box 11562, Cairo, Egypt
| | - Marwa A Fouad
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., P.O. Box 11562, Cairo, Egypt
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Newgiza University (NGU), Newgiza, km 22 Cairo-Alexandria Desert Road, Cairo, Egypt
| | - Fatma H Ghazy
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., P.O. Box 11562, Cairo, Egypt
| | - Esraa A Radi
- Health Minister's Technical Office, Ministry of Health, Cairo, Egypt
| | | | - Ahmed M El Kerdawy
- Pharmaceutical Chemistry Department, Faculty of Pharmacy, Cairo University, Kasr El-Aini St., P.O. Box 11562, Cairo, Egypt
- School of Pharmacy, College of Health and Science, University of Lincoln, Lincoln, UK
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Wang T, Li H, Allen N, Ferraro I, Li A. Ultra-low current electrospray ionization of chloroform solution for the analysis of perfluorinated sulfonic acids. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2023; 37 Suppl 1:e9501. [PMID: 36879515 DOI: 10.1002/rcm.9501] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 02/13/2023] [Accepted: 03/03/2023] [Indexed: 06/18/2023]
Abstract
RATIONALE Femtoamp and picoamp electrospray ionization (ESI) characteristics of a nonpolar solvent were explored. The direct ESI mass spectrometry analysis of chloroform extract solution enabled rapid analysis of perfluorinated sulfonic acid analytes in drinking water. METHODS Neat chloroform solvent and extracts were directly used in a typical wire-in ESI setup using micrometer emitter tips. Ionization currents were measured with femtoamp sensitivity while ramping the spray voltage from 0 to -5000 V. Methanol was used as a comparison to illustrate the characteristics of electrospraying chloroform. The effects of spray voltage and inlet temperature were studied. A liquid-liquid extraction workflow was developed to analyze perfluorooctanoate sulfonate (PFOS) in drinking water using an ion-trap mass spectrometer. RESULTS The ionization onset of chloroform solution was 41 ± 17 fA at 300 V. The ionization current gradually increased with voltage while remaining below 100 pA when using voltages up to -5000 V. The ion signal of PFOS was significantly enhanced to improve the limit of detection (LoD) to 25 ppt in chloroform. Coupled with a liquid-liquid extraction workflow, LoD of 0.38-5.1 ppt and a quantitation range of 5-400 ppt were achieved for perfluorinated sulfonic compounds in 1-ml water samples. CONCLUSIONS Femtoamp and picoamp modes expand the solvent compatibility range of ESI and can enable quantitative analysis in parts per trillion (ppt) concentrations.
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Affiliation(s)
| | - Huishan Li
- University of New Hampshire, Durham, NH, USA
| | | | - Ian Ferraro
- University of New Hampshire, Durham, NH, USA
| | - Anyin Li
- University of New Hampshire, Durham, NH, USA
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Gupta I, Gupta O. Recent Advancements in the Recovery and Reuse of Organic Solvents Using Novel Nanomaterial-Based Membranes for Renewable Energy Applications. MEMBRANES 2023; 13:membranes13010108. [PMID: 36676915 PMCID: PMC9862370 DOI: 10.3390/membranes13010108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 05/12/2023]
Abstract
The energy crisis in the world is increasing rapidly owing to the shortage of fossil fuel reserves. Climate change and an increase in global warming necessitates a change in focus from petroleum-based fuels to renewable fuels such as biofuels. The remodeling of existing separation processes using various nanomaterials is of a growing interest to industrial separation methods. Recently, the design of membrane technologies has been the most focused research area concerning fermentation broth to enhance performance efficiency, while recovering those byproducts to be used as value added fuels. Specifically, the use of novel nano material membranes, which brings about a selective permeation of the byproducts, such as organic solvent, from the fermentation broth, positively affects the fermentation kinetics by eliminating the issue of product inhibition. In this review, which and how membrane-based technologies using novel materials can improve the separation performance of organic solvents is considered. In particular, technical approaches suggested in previous studies are discussed with the goal of emphasizing benefits and problems faced in order to direct research towards an optimized membrane separation performance for renewable fuel production on a commercial scale.
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Affiliation(s)
- Indrani Gupta
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, NJ 07102, USA
| | - Oindrila Gupta
- Vertex Pharmaceuticals Inc., Boston, MA 02210, USA
- Correspondence: ; Tel.: +1-201-467-1138
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Monaghan J, Xin Q, Aplin R, Jaeger A, Heshka NE, Hounjet LJ, Gill CG, Krogh ET. Aqueous naphthenic acids and polycyclic aromatic hydrocarbons in a meso-scale spill tank affected by diluted bitumen analyzed directly by membrane introduction mass spectrometry. JOURNAL OF HAZARDOUS MATERIALS 2022; 440:129798. [PMID: 36027751 DOI: 10.1016/j.jhazmat.2022.129798] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 07/25/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
With the increasing use of unconventional, heavy crude oils there is growing interest in potential impacts of a diluted bitumen (DB) spill in marine and freshwater environments. DB has the potential to release several toxic, trace organic contaminants to the water column. Here, the aqueous concentrations and compositions of two classes of organic contaminants, naphthenic acids (NAs) and polycyclic aromatic hydrocarbons (PAHs), are followed over 8 weeks after a simulated spill of DB (10 L) into a freshwater mesocosm (1200 L) with river sediment (2.4 kg). These complex samples contain biogenic dissolved organic matter, inorganic ions, petroleum contaminants, suspended sediments, and oil droplets. We report the first use of condensed phase membrane introduction mass spectrometry (CP-MIMS) as a direct sampling platform in a complex multi-phase mesocosm spill tank study to measure trace aqueous phase contaminants with little to no sample preparation (dilution and/or pH adjustment). CP-MIMS provides complementary strengths to conventional analytical approaches (e.g., gas- or liquid chromatography mass spectrometry) by allowing the entire sample series to be screened quickly. Trace NAs are measured as carboxylates ([M-H]-) using electrospray ionization and PAHs are detected as radical cations (M+•) using liquid electron ionization coupled to a triple quadrupole mass spectrometer. The DB-affected mesocosm exhibits NA concentrations from 0.3 to 1.2 mg/L, which rise quickly over the first 2 - 5 days , then decrease slowly over the remainder of the study period. The NA profile (measured as the full scan in negative-electrospray ionization at nominal mass resolution) shifts to lower m/z with weathering, a process followed by principal component analysis of the normalized mass spectra. We couple CP-MIMS with high-resolution mass spectrometry to follow changes in molecular speciation over time, which reveals a concomitant shift from classical 'O2' naphthenic acids to more oxidized analogues. Concentrations of PAHs and alkylated analogues (C1 - C4) in the DB-affected water range from 0 to 5 μg/L. Changes in PAH concentrations depend on ring number and degree of alkylation, with small and/or lightly alkylated (C0 - C2) PAH concentrations rising to a maximum in the first 4 - 8 days (100 - 200 h) before slowly decaying over the remainder of the study period. Larger and heavily alkylated (C3 - C4) PAH concentrations generally rise slower, with some species remaining below the detection limit throughout the study period (e.g., C20H12 class including benzo[a]pyrene). In contrast, a control mesocosm (without oil) exhibited NA concentrations below 0.05 mg/L and PAHs were below detection limit. Capitalizing on the rapid analytical workflow of CP-MIMS, we also investigate the impacts of sample filtration at the time of sampling (on NA and PAH data) and sample storage time (on NA data only).
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Affiliation(s)
- Joseph Monaghan
- Applied Environmental Research Laboratories, Department of Chemistry, Vancouver Island University, 900 Fifth Street, Nanaimo, BC V9R 5S5, Canada; Department of Chemistry, University of Victoria, PO Box 3055, Victoria, BC V8P 5C2, Canada
| | - Qin Xin
- Natural Resources Canada, CanmetENERGY Devon, 1 Oil Patch Drive, Devon, AB T9G 1A8, Canada.
| | - Rebekah Aplin
- Applied Environmental Research Laboratories, Department of Chemistry, Vancouver Island University, 900 Fifth Street, Nanaimo, BC V9R 5S5, Canada
| | - Angelina Jaeger
- Applied Environmental Research Laboratories, Department of Chemistry, Vancouver Island University, 900 Fifth Street, Nanaimo, BC V9R 5S5, Canada
| | - Nicole E Heshka
- Natural Resources Canada, CanmetENERGY Devon, 1 Oil Patch Drive, Devon, AB T9G 1A8, Canada
| | - Lindsay J Hounjet
- Natural Resources Canada, CanmetENERGY Devon, 1 Oil Patch Drive, Devon, AB T9G 1A8, Canada
| | - Chris G Gill
- Applied Environmental Research Laboratories, Department of Chemistry, Vancouver Island University, 900 Fifth Street, Nanaimo, BC V9R 5S5, Canada; Department of Chemistry, University of Victoria, PO Box 3055, Victoria, BC V8P 5C2, Canada; Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada; Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98195-1618, USA
| | - Erik T Krogh
- Applied Environmental Research Laboratories, Department of Chemistry, Vancouver Island University, 900 Fifth Street, Nanaimo, BC V9R 5S5, Canada; Department of Chemistry, University of Victoria, PO Box 3055, Victoria, BC V8P 5C2, Canada.
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Castro-Muñoz R, Díaz-Montes E, Gontarek-Castro E, Boczkaj G, Galanakis CM. A comprehensive review on current and emerging technologies toward the valorization of bio-based wastes and by products from foods. Compr Rev Food Sci Food Saf 2021; 21:46-105. [PMID: 34957673 DOI: 10.1111/1541-4337.12894] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 10/25/2021] [Accepted: 11/06/2021] [Indexed: 01/07/2023]
Abstract
Industries in the agro-food sector are the largest generators of waste in the world. Agro-food wastes and by products originate from the natural process of senescence, pretreatment, handling, and manufacturing processes of food and beverage products. Notably, most of the wastes are produced with the transformation of raw materials (such as fruits, vegetables, plants, tubers, cereals, and dairy products) into different processed foods (e.g., jams, sauces, and canned fruits/vegetables), dairy derivatives (e.g., cheese and yogurt), and alcoholic (e.g., wine and beer) and nonalcoholic beverages (e.g., juices and soft drinks). Current research is committed not only to the usage of agro-food wastes and by products as a potential source of high-value bioactive compounds (e.g., phenolic compounds, anthocyanins, and organic acids) but also to the implementation of emerging and innovative technologies that can compete with conventional extraction methods for the efficient extraction of such biomolecules from the residues. Herein, specific valorization technologies, such as membrane-based processes, microwave, ultrasound, pulsed electric-assisted extraction, supercritical/subcritical fluids, and pressurized liquids, have emerged as advanced techniques in extracting various added-value biomolecules, showing multiple advantages (improved extraction yields, reduced process time, and protection to the bioactive properties of the compounds). Hence, this comprehensive review aims to analyze the ongoing research on applying such techniques in valorization protocols. A last-five-year review, together with a featured analysis of the relevant findings in the field, is provided.
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Affiliation(s)
- Roberto Castro-Muñoz
- Tecnologico de Monterrey, Campus Toluca, San Antonio Buenavista, Toluca de Lerdo, Mexico.,Gdansk University of Technology, Faculty of Chemistry, Department of Process Engineering and Chemical Technology, Gdansk, Poland
| | - Elsa Díaz-Montes
- Unidad Profesional Interdisciplinaria de Biotecnología, Instituto Politécnico Nacional, Barrio La Laguna Ticoman, Ciudad de México, Mexico
| | - Emilia Gontarek-Castro
- Gdansk University of Technology, Faculty of Chemistry, Department of Process Engineering and Chemical Technology, Gdansk, Poland
| | - Grzegorz Boczkaj
- Gdansk University of Technology, Faculty of Chemistry, Department of Process Engineering and Chemical Technology, Gdansk, Poland
| | - Charis M Galanakis
- Research and Innovation Department, Galanakis Laboratories, Chania, Greece.,Food Waste Recovery Group, ISEKI Food Association, Vienna, Austria
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Comparison study of nanofibers, composite nano/microfiber materials, molecularly imprinted polymers, and core-shell sorbents used for on-line extraction-liquid chromatography of ochratoxins in Tokaj wines. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106680] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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7
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Jin YR, Oh MJ, Yuk HJ, An HJ, Kim DS. Novel analysis procedure for red ginseng polysaccharides by matrix-assisted laser desorption/ionization time-of-flight/time-of-flight mass spectrometry. J Ginseng Res 2021; 45:539-545. [PMID: 34803423 PMCID: PMC8587486 DOI: 10.1016/j.jgr.2021.02.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 12/30/2020] [Accepted: 02/17/2021] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Red ginseng polysaccharides (RGPs) have been acknowledged for their outstanding immunomodulation and anti-tumor activities. However, their studies are still limited by the complexity of their structural features, the absence of purification and enrichment methods, and the rarity of the analytical instruments that apply to the analysis of such macromolecules. Thus, this study is an attempt to establish a new mass spectrometry (MS)-based analysis procedure for RGPs. METHODS Saponin pre-excluded powder of RG (RG-SPEP, 10 mg) was treated with 200 μL of distilled water and centrifuged for 5 h at 1000 rpm and 85 °C. Ethanol-based precipitation and centrifugation were applied to obtain RGPs from the heated extracts. Further, endo-carbohydrase treatments were performed to produce specific saccharide fragments. Solid-phase extraction (SPE) processes were implemented to purify and enrich the enzyme-treated RGPs, while matrix-assisted laser desorption/ionization time-of-flight/time-of-flight (MALDI-TOF/TOF) MS was employed for the partial structural analysis of the obtained RGPs. RESULTS Utilizing cellulase, porous graphitized carbon (PGC), hydrophilic interaction chromatography (HILIC), and MALDI-TOF/TOF MS, the neutral and acidic RGPs were qualitatively analyzed. Hexn and Hexn -18 (cellulose analogs) were determined to be novel neutral RGPs. Additionally, the [Unknown + Hexn] species were also determined as new acidic RGPs. Furthermore, HexAn (H) was determined as another form of the acidic RGPs. CONCLUSION Compared to the previous methods of analysis, these unprecedented applications of HILIC-SPE and MALDI-TOF/TOF MS to analyze RGPs proved to be fairly effective for fractionating and detecting neutral and acidic components. This new procedure exhibits great potential as a specific tool for searching and determining various polysaccharides in many herbal medicines.
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Affiliation(s)
- Ye Rin Jin
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
- University of Science and Technology, Daejeon, Republic of Korea
| | - Myung Jin Oh
- Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon, Republic of Korea
| | - Heung Joo Yuk
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
| | - Hyun Joo An
- Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon, Republic of Korea
| | - Dong Seon Kim
- Herbal Medicine Research Division, Korea Institute of Oriental Medicine, Daejeon, Republic of Korea
- University of Science and Technology, Daejeon, Republic of Korea
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Erarpat S, Bodur S, Bakırdere S. Nanoparticles Based Extraction Strategies for Accurate and Sensitive Determination of Different Pesticides. Crit Rev Anal Chem 2021; 52:1370-1385. [PMID: 33576246 DOI: 10.1080/10408347.2021.1876552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Sample preparation methods have become indispensable steps in analytical measurements not only to lower the detection limit but also to eliminate the matrix effect although more sophisticated instruments are being commonly used in routine analyses. Solid phase extraction (SPE) is one of the main extraction/preconcentration methods used to extract and purify target analytes along with simple and rapid procedures but some limitations have led to seek for an easy, sensitive and fast extraction methods with analyte-selective sorbents. Nanoparticles with different modifications have been used as spotlight to enhance extraction efficiency of target pesticides from complicated matrices. Carbon-based, metal and metal oxides, silica and polymer-based nanoparticles have been explored as promising sorbents for pesticide extraction. In this review, different types of nanoparticles used in the preconcentration of pesticides in various samples are outlined and examined. Latest studies in the literature are discussed in terms of their instrumental detection, sample matrix and limit of detection values. Novel strategies and future directions of nanoparticles used in the extraction and preconcentration of pesticides are also discussed.
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Affiliation(s)
- Sezin Erarpat
- Department of Chemistry, Faculty of Art and Science, Yıldız Technical University, İstanbul, Turkey
| | - Süleyman Bodur
- Department of Chemistry, Faculty of Art and Science, Yıldız Technical University, İstanbul, Turkey
| | - Sezgin Bakırdere
- Department of Chemistry, Faculty of Art and Science, Yıldız Technical University, İstanbul, Turkey.,Turkish Academy of Sciences (TÜBA), Ankara, Turkey
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Gouveia TIA, Silva AMT, Ribeiro AR, Alves A, Santos MSF. Liquid-liquid extraction as a simple tool to quickly quantify fourteen cytostatics in urban wastewaters and access their impact in aquatic biota. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 740:139995. [PMID: 32559532 DOI: 10.1016/j.scitotenv.2020.139995] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 06/03/2020] [Accepted: 06/03/2020] [Indexed: 06/11/2023]
Abstract
Cytostatics are highly toxic pharmaceuticals used in the treatment of cancer. These substances are partially excreted by the human body after administration. The inefficient removal of some cytostatics in urban wastewater treatment plants (WWTPs) allows them to reach surface waters and consequently the aquatic biota. However, information about their occurrence in urban wastewaters is available only for certain active ingredients. A liquid-liquid extraction method coupled to liquid-chromatography-tandem mass spectrometry analysis was developed, allowing the identification and quantification of 14 cytostatics in wastewater samples, avoiding the use of expensive sorbents. Moreover, satisfactory cytostatics' recoveries were achieved when the new method was applied to wastewaters from a Portuguese WWTP: average of (74 ± 21)% for the influents, (83 ± 22)% for secondary effluents, and (94 ± 24)% for tertiary effluents collected after UV treatment, except for imatinib. Doxorubicin, etoposide, megestrol and prednisone were completely eliminated in the first stage of the WWTP treatment (i.e. detected in the influents, but not in the effluents). Bicalutamide, capecitabine, cyclophosphamide, ifosfamide and mycophenolic acid were recalcitrant to UV radiation (i.e. detected in tertiary effluents), ifosfamide being the cytostatic most difficult to be removed (its concentration did not decrease from the entrance to the outlet of the WWTP). The risk at which aquatic organisms might be subjected, due to their exposure to cytostatics' concentrations 10-times lower than those found in the tertiary effluents, was estimated and it was verified that mycophenolic acid may represent a high risk. Although no risk was estimated for the other cytostatics, the risks associated to long-term and synergic exposure should not be ruled out.
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Affiliation(s)
- Teresa I A Gouveia
- LEPABE - Laboratory for Process, Environmental, Biotechnology and Energy Engineering, Faculty of Engineering, University of Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Adrián M T Silva
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Ana R Ribeiro
- Laboratory of Separation and Reaction Engineering - Laboratory of Catalysis and Materials (LSRE-LCM), Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Arminda Alves
- LEPABE - Laboratory for Process, Environmental, Biotechnology and Energy Engineering, Faculty of Engineering, University of Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Mónica S F Santos
- LEPABE - Laboratory for Process, Environmental, Biotechnology and Energy Engineering, Faculty of Engineering, University of Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal.
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Ahmed OS, Ladner Y, Bousquet C, Montels J, Dubský P, Philibert L, Perrin C. Direct salting-out assisted liquid–liquid extraction (SALLE) from human blood: Application for the analysis of tyrosine kinase inhibitors. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104791] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Abbaszade G, Szabó A, Vajna B, Farkas R, Szabó C, Tóth E. Whole genome sequence analysis of Cupriavidus campinensis S14E4C, a heavy metal resistant bacterium. Mol Biol Rep 2020; 47:3973-3985. [PMID: 32406019 PMCID: PMC7239810 DOI: 10.1007/s11033-020-05490-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 04/30/2020] [Indexed: 11/18/2022]
Abstract
Cupriavidus sp. are model organisms for heavy metal(loid) resistance and aromatic compound's degradation studies and these characteristics make them a perfect candidate for biotechnological purposes. Bacterial strain S14E4C (identified as Cupriavidus campinensis) was isolated from a playground by enrichment method in a 0.25 mM containing medium. The analysis revealed that this bacterium is able to tolerate high concentrations of heavy metal(loid)s: Cd up to 19.5 mM, Pb to 9 mM, Hg to 5.5 mM and As to 2 mM in heavy metal(loid) salt containing nutrient medium. The whole genome data and analysis of the type strain of C. campinensis CCUG:44526T have not been available so far, thus here we present the genome sequencing results of strain S14E4C of the same species. Analysis was carried out to identify possible mechanisms for the heavy metal resistance and to map the genetic data of C. campinensis. The annotation pipelines revealed that the total genome of strain S14E4C is 6,375,175 bp length with a GC content of 66.3% and contains 2 plasmids with 295,460 bp (GC content 59.9%) and 50,483 bp (GC content 63%). In total 4460 coding sequences were assigned to known functions and 1508 to hypothetical proteins. Analysis proved that strain S14E4C is having gene clusters such as czc, mer, cus, chr, ars to encode various heavy metal resistance mechanisms that play an important role to survive in extreme environments.
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Affiliation(s)
- Gorkhmaz Abbaszade
- Department of Microbiology, Institute of Biology, Eötvös Loránd University, Budapest, Hungary.
- Lithosphere Fluid Research Lab, Institute of Geography and Earth Sciences, Eötvös Loránd University, Budapest, Hungary.
| | - Attila Szabó
- Department of Microbiology, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
| | - Balázs Vajna
- Department of Microbiology, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
| | - Rózsa Farkas
- Department of Microbiology, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
| | - Csaba Szabó
- Lithosphere Fluid Research Lab, Institute of Geography and Earth Sciences, Eötvös Loránd University, Budapest, Hungary
| | - Erika Tóth
- Department of Microbiology, Institute of Biology, Eötvös Loránd University, Budapest, Hungary
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Arslan T, Umutlu M, Güney O. Elucidation of Selectivity for Silver Ion Based on Metal-Induced H-Type Aggregation of Fluorescent Receptor. J Fluoresc 2020; 30:365-373. [PMID: 32086711 DOI: 10.1007/s10895-020-02520-3] [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: 12/18/2019] [Accepted: 02/14/2020] [Indexed: 10/25/2022]
Abstract
In present work, a new substituted phthalonitrile derivative was prepared by the nucleophilic displacement reaction and then highly soluble zinc phthalocyanine (ZnPc) with four peripheral 1-hydroxyhexan-3-ylthio groups was synthesized by cyclotetramerization and characterized by FTIR, 1H and 13C NMRs spectroscopies, fluorescence and UV-vis measurements. The optical property and quantum yield of ZnPc were elucidated in mixed solvent of ethanol/water with varying compositions. The pH-dependent fluorescence and absorbance spectra of ZnPc in the absence and presence of Ag+ ions were obtained to elucidate the optimum pH value that is convenient for stable complex formation in predetermined mixture. A comparative study for recognition of Ag+ ion has been carried out to evaluate the effect of the solution parameters on selective sensing ability of ZnPc as a fluorescent receptor. Interference effect was investigated by spectrofluorometric titration based on fluorescence quenching of ZnPc upon addition of Ag+ ion in the presence of foreign metal ions. Stepwise complexation/decomplexation cycles with Na2S-titration by fluorescence quenching/enhancement were investigated to establish the reversible response rate and reusability of ZnPc toward Ag+ ions. Graphical Abstract Selective determination of silver ion based on H-type aggregation of zinc phthalocyanine.
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Affiliation(s)
- Taner Arslan
- Departments of Chemistry, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey
| | - Merve Umutlu
- Departments of Chemistry, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey
| | - Orhan Güney
- Departments of Chemistry, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey.
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David V, Galaon T, Bacalum E. Sample Enrichment by Solid-Phase Extraction for Reaching Parts per Quadrillion Levels in Environmental Analysis. Chromatographia 2019. [DOI: 10.1007/s10337-019-03696-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Chimuka L, Sibiya P, Amdany R, Cukrowska E, Forbes PBC. Status of PAHs in Environmental Compartments of South Africa: A Country Report. Polycycl Aromat Compd 2015. [DOI: 10.1080/10406638.2014.988276] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- L. Chimuka
- Molecular Sciences Institute, School of ChemistryUniversity of the Witwatersrand, Johannesburg, South Africa
| | - P. Sibiya
- Molecular Sciences Institute, School of ChemistryUniversity of the Witwatersrand, Johannesburg, South Africa
| | - R. Amdany
- Molecular Sciences Institute, School of ChemistryUniversity of the Witwatersrand, Johannesburg, South Africa
| | - E. Cukrowska
- Molecular Sciences Institute, School of ChemistryUniversity of the Witwatersrand, Johannesburg, South Africa
| | - P. B. C. Forbes
- Department of ChemistryUniversity of Pretoria, Pretoria, South Africa
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15
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Pavlova PA, Schmid P, Zennegg M, Bogdal C, Schwikowski M. Trace analysis of hydrophobic micropollutants in aqueous samples using capillary traps. CHEMOSPHERE 2014; 106:51-56. [PMID: 24560279 DOI: 10.1016/j.chemosphere.2013.12.092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 12/18/2013] [Accepted: 12/30/2013] [Indexed: 06/03/2023]
Abstract
Studying the fate of persistent organic pollutants (POPs) in glacier environments scientist face the challenge of snow and ice samples, in which concentrations of these pollutants are at the ultra-trace level and the amount of sample available is often very limited. We have improved an extraction method for hydrophobic organic pollutants such as polychlorinated biphenyls (PCBs) in aqueous media to meet the requirements of these challenging samples. It is based on partitioning of the analytes from the water into the polydimethylsiloxane (PDMS) coating of an open tubular-fused-silica capillary. By comparison with conventional liquid-liquid extraction, we validated the method for six indicator PCBs, covering a wide range of polarity. The new method has very low detection limits of 10-20pg/L for the investigated PCBs, a small uncertainty between 9% and 37%, depending on concentration, and requires a small sample volume of less than one liter. Further, it is characterized by easy handling and reduced organic solvents consumption. The method is comparatively insensitive to contamination, reproducible, and suitable for a wide range of applications.
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Affiliation(s)
- Pavlina Aneva Pavlova
- Empa, Swiss Federal Laboratories for Materials Testing and Research, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland; PSI, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland; Oeschger Centre for Climate Change Research, University of Berne, Berne, Switzerland
| | - Peter Schmid
- Empa, Swiss Federal Laboratories for Materials Testing and Research, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Markus Zennegg
- Empa, Swiss Federal Laboratories for Materials Testing and Research, Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Christian Bogdal
- Institute for Chemical and Bioengineering, ETH Zurich, Wolfgang-Pauli-Strasse 10, CH-8093 Zürich, Switzerland
| | - Margit Schwikowski
- PSI, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland; Oeschger Centre for Climate Change Research, University of Berne, Berne, Switzerland; Department of Chemistry and Biochemistry, University of Berne, Berne, Switzerland.
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16
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Sorption effects interfering with the analysis of polycyclic aromatic hydrocarbons (PAH) in aqueous samples. Talanta 2014; 122:151-6. [DOI: 10.1016/j.talanta.2014.01.038] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Revised: 01/10/2014] [Accepted: 01/17/2014] [Indexed: 11/22/2022]
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17
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Multi-component trace analysis of organic xenobiotics in surface water containing suspended particular matter by solid phase extraction/gas chromatography–mass spectrometry. J Chromatogr A 2012; 1249:181-9. [DOI: 10.1016/j.chroma.2012.06.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Revised: 05/25/2012] [Accepted: 06/07/2012] [Indexed: 11/18/2022]
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18
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Wolska L. Determination (monitoring) of PAHs in surface waters: why an operationally defined procedure is needed. Anal Bioanal Chem 2008; 391:2647-52. [PMID: 18542933 DOI: 10.1007/s00216-008-2173-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2008] [Revised: 03/21/2008] [Accepted: 05/05/2008] [Indexed: 11/27/2022]
Abstract
The results of interlaboratory studies on the determination of selected PAHs in samples of pure water and water containing suspended matter are presented and discussed in this study. Determinations were performed by independent analytical laboratories which used different sample-preparation procedures, i.e. liquid-liquid extraction and solid-phase extraction with columns and speedisks. The study indicates that the results of PAHs determination depend on the type of isolation technique and the final determination procedure used by a given laboratory. Differences among the determined concentrations of specific PAHs reached 700%. In this work it has been shown that modern analysis does not offer isolation techniques for PAHs which would secure their speciation in the aquatic environment.
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Affiliation(s)
- Lidia Wolska
- Department of Analytical Chemistry, Chemical Faculty, Gdansk University of Technology, Gdansk, 80-952, Poland.
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